# List of minor planets: 550001–551000

The following is a partial list of minor planets, running from minor-planet number 550001 through 551000, inclusive. The primary data for this and other partial lists is based on JPL's "Small-Body Orbital Elements" and data available from the Minor Planet Center. Critical list information is also provided by the MPC, unless otherwise specified from Lowell Observatory. A detailed description of the table's columns and additional sources are given on the main page including a complete list of every page in this series, and a statistical break-up on the dynamical classification of minor planets.
Also see the summary list of all named bodies in numerical and alphabetical order, and the corresponding naming citations for the number range of this particular list. New namings may only be added to this list after official publication, as the preannouncement of names is condemned by the Working Group for Small Bodies Nomenclature of the International Astronomical Union.
| Near-Earth obj. | MBA (inner) | MBA (outer) | Centaur |
| Mars-crosser | MBA (middle) | Jupiter trojan | Trans-Neptunian obj. |
| Unclassified | | | |

## Index100K200K300K400K500K600K700Kcolor code

* 545,000s
* 546,000s
* 547,000s
* 548,000s
* 549,000s
* 550,000s
* 551,000s
* 552,000s
* 553,000s
* 554,000s
* 555,000s
* 550,001…
* 550,101…
* 550,201…
* 550,301…
* 550,401…
* 550,501…
* 550,601…
* 550,701…
* 550,801…
* 550,901…

## 550001–550100

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550001 | 2011 WJ$_{138}$ | — | October 23, 2011 | Kitt Peak | Spacewatch | 7:4 | 2.9 km | MPC · JPL |
| 550002 | 2011 WY$_{140}$ | — | February 12, 2000 | Apache Point | SDSS | · | 1.8 km | MPC · JPL |
| 550003 | 2011 WM$_{145}$ | — | November 20, 2006 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550004 | 2011 WC$_{151}$ | — | December 1, 2011 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550005 | 2011 WK$_{152}$ | — | December 26, 2003 | Piszkesteto | K. Sárneczky | · | 1.5 km | MPC · JPL |
| 550006 | 2011 WY$_{158}$ | — | November 25, 2011 | Haleakala | Pan-STARRS | · | 1.4 km | MPC · JPL |
| 550007 | 2011 WY$_{161}$ | — | November 23, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 720 m | MPC · JPL |
| 550008 | 2011 WF$_{162}$ | — | February 5, 2017 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550009 | 2011 WH$_{162}$ | — | March 19, 2013 | Haleakala | Pan-STARRS | · | 1.1 km | MPC · JPL |
| 550010 | 2011 WX$_{162}$ | — | November 18, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 620 m | MPC · JPL |
| 550011 | 2011 WG$_{165}$ | — | November 26, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550012 | 2011 WH$_{165}$ | — | April 9, 2013 | Haleakala | Pan-STARRS | H | 570 m | MPC · JPL |
| 550013 | 2011 WL$_{166}$ | — | March 19, 2017 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550014 | 2011 WZ$_{166}$ | — | November 3, 2015 | Mount Lemmon | Mount Lemmon Survey | · | 900 m | MPC · JPL |
| 550015 | 2011 WZ$_{167}$ | — | November 24, 2011 | Mount Lemmon | Mount Lemmon Survey | L4 | 6.4 km | MPC · JPL |
| 550016 | 2011 WB$_{168}$ | — | July 4, 2014 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550017 | 2011 WY$_{169}$ | — | November 26, 2011 | Mount Lemmon | Mount Lemmon Survey | H | 670 m | MPC · JPL |
| 550018 | 2011 WJ$_{171}$ | — | November 24, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550019 | 2011 WV$_{172}$ | — | May 21, 2014 | Haleakala | Pan-STARRS | · | 1.4 km | MPC · JPL |
| 550020 | 2011 WY$_{172}$ | — | November 7, 2015 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550021 | 2011 WY$_{174}$ | — | November 23, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 680 m | MPC · JPL |
| 550022 | 2011 WG$_{175}$ | — | November 18, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550023 | 2011 WE$_{176}$ | — | August 29, 2006 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550024 | 2011 WD$_{179}$ | — | November 27, 2011 | Mount Lemmon | Mount Lemmon Survey | critical | 1.6 km | MPC · JPL |
| 550025 | 2011 XU$_4$ | — | October 8, 2015 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550026 | 2011 XO$_5$ | — | December 6, 2011 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |
| 550027 | 2011 XP$_5$ | — | January 31, 2017 | Haleakala | Pan-STARRS | · | 1.7 km | MPC · JPL |
| 550028 | 2011 XD$_6$ | — | December 6, 2011 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550029 | 2011 XK$_6$ | — | April 12, 2013 | Haleakala | Pan-STARRS | · | 750 m | MPC · JPL |
| 550030 | 2011 YD$_1$ | — | January 31, 2004 | Apache Point | SDSS Collaboration | · | 2.2 km | MPC · JPL |
| 550031 | 2011 YD$_2$ | — | December 5, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550032 | 2011 YP$_2$ | — | November 30, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550033 | 2011 YZ$_3$ | — | October 19, 2006 | Catalina | CSS | · | 2.4 km | MPC · JPL |
| 550034 | 2011 YA$_4$ | — | December 22, 2011 | Oukaimeden | C. Rinner | · | 1.2 km | MPC · JPL |
| 550035 | 2011 YD$_4$ | — | January 28, 2007 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550036 | 2011 YK$_5$ | — | December 24, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550037 | 2011 YN$_5$ | — | December 24, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550038 | 2011 YR$_6$ | — | December 17, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550039 | 2011 YN$_9$ | — | December 6, 2011 | Haleakala | Pan-STARRS | · | 1.2 km | MPC · JPL |
| 550040 | 2011 YF$_{12}$ | — | January 1, 2008 | Kitt Peak | Spacewatch | · | 940 m | MPC · JPL |
| 550041 | 2011 YT$_{14}$ | — | December 25, 2011 | Les Engarouines | L. Bernasconi | L4 | 8.6 km | MPC · JPL |
| 550042 | 2011 YK$_{16}$ | — | November 2, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550043 | 2011 YL$_{19}$ | — | December 30, 2008 | Kitt Peak | Spacewatch | · | 790 m | MPC · JPL |
| 550044 | 2011 YN$_{19}$ | — | October 15, 2001 | Palomar | NEAT | · | 3.2 km | MPC · JPL |
| 550045 | 2011 YA$_{21}$ | — | November 7, 2002 | Kitt Peak | Kitt Peak Obs. | MIS | 2.5 km | MPC · JPL |
| 550046 | 2011 YH$_{22}$ | — | February 28, 2008 | Catalina | CSS | · | 2.5 km | MPC · JPL |
| 550047 | 2011 YG$_{23}$ | — | December 22, 1998 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550048 | 2011 YE$_{25}$ | — | December 31, 2007 | Kitt Peak | Spacewatch | · | 1.0 km | MPC · JPL |
| 550049 | 2011 YU$_{34}$ | — | August 7, 2010 | XuYi | PMO NEO | · | 2.1 km | MPC · JPL |
| 550050 | 2011 YW$_{34}$ | — | September 3, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550051 | 2011 YL$_{35}$ | — | October 15, 2002 | Palomar | NEAT | · | 1.4 km | MPC · JPL |
| 550052 | 2011 YV$_{35}$ | — | September 14, 2006 | Kitt Peak | Spacewatch | · | 1.0 km | MPC · JPL |
| 550053 | 2011 YM$_{36}$ | — | January 14, 2008 | Kitt Peak | Spacewatch | · | 860 m | MPC · JPL |
| 550054 | 2011 YC$_{42}$ | — | December 25, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 980 m | MPC · JPL |
| 550055 | 2011 YS$_{45}$ | — | December 27, 2011 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550056 | 2011 YH$_{48}$ | — | January 17, 2004 | Palomar | NEAT | · | 1.4 km | MPC · JPL |
| 550057 | 2011 YG$_{53}$ | — | December 19, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550058 | 2011 YT$_{53}$ | — | December 27, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550059 | 2011 YH$_{57}$ | — | August 31, 2005 | Campo Imperatore | CINEOS | · | 2.7 km | MPC · JPL |
| 550060 | 2011 YW$_{58}$ | — | December 29, 2011 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550061 | 2011 YL$_{60}$ | — | December 29, 2011 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550062 | 2011 YQ$_{63}$ | — | December 26, 2011 | Marly | P. Kocher | · | 1.7 km | MPC · JPL |
| 550063 | 2011 YJ$_{66}$ | — | December 31, 2011 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550064 | 2011 YD$_{68}$ | — | December 31, 2011 | Kitt Peak | Spacewatch | L4 | 9.2 km | MPC · JPL |
| 550065 | 2011 YE$_{68}$ | — | March 9, 2008 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550066 | 2011 YF$_{68}$ | — | August 29, 2006 | Catalina | CSS | · | 1.4 km | MPC · JPL |
| 550067 | 2011 YT$_{68}$ | — | December 17, 2011 | ESA OGS | ESA OGS | · | 1.0 km | MPC · JPL |
| 550068 | 2011 YL$_{73}$ | — | December 30, 2011 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550069 | 2011 YY$_{74}$ | — | February 18, 2001 | Haleakala | AMOS | · | 3.6 km | MPC · JPL |
| 550070 | 2011 YA$_{75}$ | — | October 9, 2002 | Socorro | LINEAR | · | 1.5 km | MPC · JPL |
| 550071 | 2011 YM$_{76}$ | — | December 18, 2003 | Socorro | LINEAR | · | 1.1 km | MPC · JPL |
| 550072 | 2011 YL$_{78}$ | — | January 24, 2012 | Haleakala | Pan-STARRS | · | 2.2 km | MPC · JPL |
| 550073 | 2011 YY$_{79}$ | — | March 8, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.0 km | MPC · JPL |
| 550074 | 2011 YZ$_{79}$ | — | December 27, 2011 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550075 | 2011 YC$_{80}$ | — | December 27, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550076 | 2011 YK$_{81}$ | — | December 28, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 740 m | MPC · JPL |
| 550077 | 2011 YP$_{82}$ | — | December 27, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 3.1 km | MPC · JPL |
| 550078 | 2011 YH$_{83}$ | — | September 13, 2015 | Piszkesteto | K. Sárneczky | · | 1.3 km | MPC · JPL |
| 550079 | 2011 YL$_{83}$ | — | December 27, 2011 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550080 | 2011 YE$_{84}$ | — | November 19, 2015 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550081 | 2011 YW$_{84}$ | — | April 12, 2013 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |
| 550082 | 2011 YY$_{84}$ | — | December 27, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550083 Szécsényi-Nagy | 2011 YL$_{85}$ | Szécsényi-Nagy | December 31, 2011 | Piszkesteto | A. Szing | · | 1.2 km | MPC · JPL |
| 550084 | 2011 YQ$_{85}$ | — | December 31, 2011 | Kitt Peak | Spacewatch | · | 1.1 km | MPC · JPL |
| 550085 | 2011 YR$_{85}$ | — | December 31, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550086 | 2011 YX$_{85}$ | — | April 1, 1995 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550087 | 2011 YT$_{88}$ | — | October 13, 1998 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550088 | 2011 YJ$_{89}$ | — | December 29, 2011 | Mount Lemmon | Mount Lemmon Survey | L4 | 8.4 km | MPC · JPL |
| 550089 | 2011 YC$_{91}$ | — | December 29, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 940 m | MPC · JPL |
| 550090 | 2012 AC$_1$ | — | March 1, 2008 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550091 | 2012 AL$_2$ | — | October 2, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550092 | 2012 AV$_3$ | — | January 1, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.1 km | MPC · JPL |
| 550093 | 2012 AW$_4$ | — | January 10, 2007 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550094 | 2012 AJ$_{10}$ | — | August 28, 2005 | Siding Spring | SSS | H | 900 m | MPC · JPL |
| 550095 | 2012 AV$_{11}$ | — | February 13, 2004 | Kitt Peak | Spacewatch | · | 980 m | MPC · JPL |
| 550096 | 2012 AL$_{18}$ | — | October 5, 2002 | Palomar | NEAT | · | 980 m | MPC · JPL |
| 550097 | 2012 AX$_{18}$ | — | October 31, 2002 | Socorro | LINEAR | · | 2.0 km | MPC · JPL |
| 550098 | 2012 AQ$_{21}$ | — | December 29, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550099 | 2012 AN$_{22}$ | — | November 24, 2011 | Haleakala | Pan-STARRS | · | 1.7 km | MPC · JPL |
| 550100 | 2012 AB$_{23}$ | — | December 30, 2007 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |

## 550101–550200

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550101 | 2012 AB$_{25}$ | — | January 6, 2012 | Kitt Peak | Spacewatch | · | 790 m | MPC · JPL |
| 550102 | 2012 AL$_{25}$ | — | January 4, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 570 m | MPC · JPL |
| 550103 | 2012 AU$_{26}$ | — | January 10, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550104 | 2012 AW$_{28}$ | — | January 1, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 900 m | MPC · JPL |
| 550105 | 2012 AX$_{29}$ | — | January 21, 1999 | Caussols | ODAS | · | 1.5 km | MPC · JPL |
| 550106 | 2012 AH$_{30}$ | — | January 2, 2012 | Kitt Peak | Spacewatch | L4 | 8.0 km | MPC · JPL |
| 550107 | 2012 AZ$_{30}$ | — | January 2, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.6 km | MPC · JPL |
| 550108 | 2012 AA$_{32}$ | — | January 1, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.1 km | MPC · JPL |
| 550109 | 2012 AV$_{32}$ | — | January 3, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.6 km | MPC · JPL |
| 550110 | 2012 AL$_{33}$ | — | January 4, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550111 | 2012 BW$_2$ | — | December 29, 2011 | Kitt Peak | Spacewatch | · | 1.5 km | MPC · JPL |
| 550112 | 2012 BX$_2$ | — | December 25, 2011 | Kitt Peak | Spacewatch | · | 1.5 km | MPC · JPL |
| 550113 | 2012 BH$_3$ | — | December 26, 2011 | Kitt Peak | Spacewatch | · | 1.6 km | MPC · JPL |
| 550114 | 2012 BQ$_3$ | — | January 2, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550115 | 2012 BK$_4$ | — | October 20, 2006 | Kitt Peak | Spacewatch | · | 1.5 km | MPC · JPL |
| 550116 | 2012 BC$_9$ | — | January 18, 2012 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550117 | 2012 BD$_{10}$ | — | September 11, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 710 m | MPC · JPL |
| 550118 | 2012 BJ$_{10}$ | — | July 30, 2000 | Cerro Tololo | M. W. Buie, S. D. Kern | · | 2.9 km | MPC · JPL |
| 550119 | 2012 BO$_{16}$ | — | April 7, 2008 | Kitt Peak | Spacewatch | · | 2.6 km | MPC · JPL |
| 550120 | 2012 BZ$_{17}$ | — | February 22, 2003 | Palomar | NEAT | · | 2.8 km | MPC · JPL |
| 550121 | 2012 BQ$_{19}$ | — | December 29, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550122 | 2012 BL$_{21}$ | — | December 26, 2011 | Kitt Peak | Spacewatch | H | 610 m | MPC · JPL |
| 550123 | 2012 BE$_{23}$ | — | October 5, 2002 | Palomar | NEAT | EUN | 1.5 km | MPC · JPL |
| 550124 | 2012 BY$_{26}$ | — | February 10, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550125 | 2012 BA$_{28}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550126 | 2012 BT$_{29}$ | — | February 16, 2004 | Kitt Peak | Spacewatch | · | 1.1 km | MPC · JPL |
| 550127 | 2012 BA$_{31}$ | — | August 23, 2004 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550128 | 2012 BT$_{32}$ | — | January 3, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550129 | 2012 BN$_{37}$ | — | February 19, 2001 | Socorro | LINEAR | · | 4.2 km | MPC · JPL |
| 550130 | 2012 BP$_{37}$ | — | November 2, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550131 | 2012 BG$_{40}$ | — | November 4, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550132 | 2012 BH$_{40}$ | — | January 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550133 | 2012 BL$_{40}$ | — | September 15, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550134 | 2012 BX$_{40}$ | — | January 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550135 | 2012 BV$_{43}$ | — | December 30, 2011 | Kitt Peak | Spacewatch | · | 1.6 km | MPC · JPL |
| 550136 | 2012 BD$_{44}$ | — | January 10, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.0 km | MPC · JPL |
| 550137 | 2012 BP$_{46}$ | — | January 19, 2012 | Mount Lemmon | Mount Lemmon Survey | 3:2 | 3.9 km | MPC · JPL |
| 550138 | 2012 BN$_{48}$ | — | July 7, 2005 | Mauna Kea | Mauna Kea Obs. | · | 1.2 km | MPC · JPL |
| 550139 Venn | 2012 BF$_{53}$ | Venn | September 18, 2006 | Mauna Kea | D. D. Balam | · | 1.2 km | MPC · JPL |
| 550140 | 2012 BD$_{54}$ | — | February 21, 2003 | Palomar | NEAT | · | 2.5 km | MPC · JPL |
| 550141 | 2012 BF$_{54}$ | — | December 26, 2006 | Catalina | CSS | · | 2.9 km | MPC · JPL |
| 550142 | 2012 BA$_{55}$ | — | January 21, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550143 | 2012 BT$_{55}$ | — | January 21, 2012 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |
| 550144 | 2012 BP$_{56}$ | — | February 18, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 940 m | MPC · JPL |
| 550145 | 2012 BE$_{58}$ | — | January 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550146 | 2012 BQ$_{59}$ | — | January 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550147 | 2012 BU$_{59}$ | — | December 7, 2005 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550148 | 2012 BN$_{62}$ | — | December 29, 2011 | Kitt Peak | Spacewatch | · | 2.6 km | MPC · JPL |
| 550149 | 2012 BS$_{67}$ | — | November 2, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550150 | 2012 BB$_{74}$ | — | October 8, 2004 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550151 | 2012 BM$_{78}$ | — | January 30, 2003 | Haleakala | AMOS | · | 2.4 km | MPC · JPL |
| 550152 | 2012 BR$_{78}$ | — | September 28, 2006 | Catalina | CSS | · | 1.6 km | MPC · JPL |
| 550153 | 2012 BD$_{79}$ | — | January 4, 2012 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550154 | 2012 BM$_{82}$ | — | May 3, 2005 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |
| 550155 | 2012 BW$_{86}$ | — | March 29, 2008 | Catalina | CSS | · | 1.5 km | MPC · JPL |
| 550156 | 2012 BB$_{87}$ | — | September 30, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550157 | 2012 BE$_{87}$ | — | December 19, 2011 | Oukaimeden | M. Ory | · | 3.8 km | MPC · JPL |
| 550158 | 2012 BJ$_{88}$ | — | January 26, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550159 | 2012 BX$_{88}$ | — | January 14, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550160 | 2012 BS$_{90}$ | — | November 14, 2007 | Kitt Peak | Spacewatch | · | 790 m | MPC · JPL |
| 550161 | 2012 BC$_{91}$ | — | January 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550162 | 2012 BL$_{95}$ | — | February 7, 2002 | Palomar | NEAT | · | 3.2 km | MPC · JPL |
| 550163 | 2012 BY$_{95}$ | — | November 28, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 3.4 km | MPC · JPL |
| 550164 | 2012 BO$_{98}$ | — | December 24, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550165 | 2012 BY$_{99}$ | — | March 8, 2003 | Nogales | P. R. Holvorcem, M. Schwartz | · | 1.8 km | MPC · JPL |
| 550166 | 2012 BG$_{101}$ | — | January 27, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550167 | 2012 BY$_{102}$ | — | December 18, 2011 | Les Engarouines | L. Bernasconi | · | 1.8 km | MPC · JPL |
| 550168 | 2012 BU$_{109}$ | — | January 18, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550169 | 2012 BO$_{110}$ | — | December 28, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550170 | 2012 BM$_{114}$ | — | January 27, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550171 | 2012 BP$_{115}$ | — | February 7, 2008 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550172 | 2012 BD$_{119}$ | — | December 30, 2011 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550173 | 2012 BH$_{119}$ | — | January 27, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 600 m | MPC · JPL |
| 550174 | 2012 BZ$_{121}$ | — | February 8, 2008 | Kitt Peak | Spacewatch | · | 890 m | MPC · JPL |
| 550175 | 2012 BU$_{123}$ | — | June 14, 2010 | Mount Lemmon | Mount Lemmon Survey | H | 560 m | MPC · JPL |
| 550176 | 2012 BV$_{124}$ | — | October 9, 2010 | Catalina | CSS | · | 3.4 km | MPC · JPL |
| 550177 | 2012 BG$_{126}$ | — | November 22, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 4.5 km | MPC · JPL |
| 550178 | 2012 BS$_{127}$ | — | January 20, 2012 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550179 | 2012 BL$_{132}$ | — | April 12, 2008 | Catalina | CSS | · | 1.6 km | MPC · JPL |
| 550180 | 2012 BR$_{132}$ | — | January 25, 2012 | Haleakala | Pan-STARRS | EUN | 1.4 km | MPC · JPL |
| 550181 | 2012 BX$_{132}$ | — | November 4, 2002 | Palomar | NEAT | · | 1.5 km | MPC · JPL |
| 550182 | 2012 BD$_{133}$ | — | January 29, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550183 | 2012 BT$_{134}$ | — | January 20, 2012 | Catalina | CSS | EUN | 1.6 km | MPC · JPL |
| 550184 | 2012 BA$_{136}$ | — | December 31, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550185 | 2012 BZ$_{136}$ | — | January 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550186 | 2012 BL$_{139}$ | — | January 29, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550187 | 2012 BK$_{143}$ | — | September 18, 2006 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550188 | 2012 BU$_{143}$ | — | April 5, 2003 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550189 | 2012 BP$_{147}$ | — | January 28, 2003 | Apache Point | SDSS Collaboration | · | 2.1 km | MPC · JPL |
| 550190 | 2012 BR$_{147}$ | — | March 8, 2008 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550191 | 2012 BO$_{149}$ | — | January 30, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550192 | 2012 BS$_{149}$ | — | September 16, 2010 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550193 | 2012 BX$_{149}$ | — | January 30, 2012 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550194 | 2012 BV$_{151}$ | — | January 30, 2012 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550195 | 2012 BK$_{156}$ | — | January 30, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550196 | 2012 BK$_{159}$ | — | January 30, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550197 | 2012 BP$_{160}$ | — | January 21, 2012 | Kitt Peak | Spacewatch | · | 2.3 km | MPC · JPL |
| 550198 | 2012 BA$_{162}$ | — | January 20, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550199 | 2012 BE$_{162}$ | — | January 21, 2012 | Kitt Peak | Spacewatch | · | 1.6 km | MPC · JPL |
| 550200 | 2012 BT$_{162}$ | — | December 13, 2015 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |

## 550201–550300

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550201 | 2012 BF$_{163}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.2 km | MPC · JPL |
| 550202 | 2012 BO$_{163}$ | — | November 17, 2014 | Haleakala | Pan-STARRS | · | 490 m | MPC · JPL |
| 550203 | 2012 BS$_{163}$ | — | January 29, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550204 | 2012 BC$_{165}$ | — | December 9, 2015 | Haleakala | Pan-STARRS | · | 1.2 km | MPC · JPL |
| 550205 | 2012 BU$_{166}$ | — | January 15, 2018 | Haleakala | Pan-STARRS | · | 2.4 km | MPC · JPL |
| 550206 | 2012 BZ$_{166}$ | — | January 21, 2012 | Catalina | CSS | · | 1.5 km | MPC · JPL |
| 550207 | 2012 BA$_{167}$ | — | June 28, 2014 | Haleakala | Pan-STARRS | · | 1.7 km | MPC · JPL |
| 550208 | 2012 BB$_{167}$ | — | January 19, 2012 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550209 | 2012 BW$_{167}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550210 | 2012 BX$_{167}$ | — | January 25, 2012 | Kitt Peak | Spacewatch | · | 2.3 km | MPC · JPL |
| 550211 | 2012 BC$_{168}$ | — | January 24, 2012 | Haleakala | Pan-STARRS | · | 1.1 km | MPC · JPL |
| 550212 | 2012 BM$_{169}$ | — | January 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550213 | 2012 BG$_{172}$ | — | March 15, 2016 | Haleakala | Pan-STARRS | · | 610 m | MPC · JPL |
| 550214 | 2012 BT$_{173}$ | — | January 30, 2012 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550215 | 2012 BR$_{174}$ | — | January 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 570 m | MPC · JPL |
| 550216 | 2012 BY$_{174}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550217 | 2012 BD$_{176}$ | — | January 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 980 m | MPC · JPL |
| 550218 | 2012 BN$_{176}$ | — | January 19, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550219 | 2012 BE$_{179}$ | — | January 21, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550220 | 2012 CJ$_3$ | — | November 5, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550221 | 2012 CK$_5$ | — | August 27, 2009 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550222 | 2012 CL$_6$ | — | April 7, 2008 | Catalina | CSS | · | 2.0 km | MPC · JPL |
| 550223 | 2012 CY$_7$ | — | March 10, 2003 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550224 | 2012 CQ$_{10}$ | — | September 30, 2010 | Mount Lemmon | Mount Lemmon Survey | MRX | 920 m | MPC · JPL |
| 550225 | 2012 CA$_{13}$ | — | October 10, 2006 | Palomar | NEAT | EUN | 1.3 km | MPC · JPL |
| 550226 | 2012 CF$_{15}$ | — | December 26, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550227 | 2012 CL$_{16}$ | — | April 16, 2004 | Palomar | NEAT | · | 1.8 km | MPC · JPL |
| 550228 | 2012 CK$_{19}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550229 | 2012 CE$_{21}$ | — | March 8, 2005 | Mount Lemmon | Mount Lemmon Survey | 3:2 | 3.9 km | MPC · JPL |
| 550230 | 2012 CA$_{23}$ | — | February 12, 2004 | Palomar | NEAT | · | 1.3 km | MPC · JPL |
| 550231 | 2012 CD$_{23}$ | — | August 31, 2005 | Kitt Peak | Spacewatch | PAD | 1.8 km | MPC · JPL |
| 550232 | 2012 CR$_{26}$ | — | January 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550233 | 2012 CE$_{27}$ | — | November 19, 2006 | Catalina | CSS | · | 1.7 km | MPC · JPL |
| 550234 | 2012 CN$_{27}$ | — | February 12, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550235 | 2012 CN$_{28}$ | — | October 29, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550236 | 2012 CU$_{28}$ | — | November 24, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550237 | 2012 CW$_{30}$ | — | February 12, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550238 | 2012 CY$_{30}$ | — | January 21, 2012 | Catalina | CSS | · | 1.4 km | MPC · JPL |
| 550239 | 2012 CQ$_{32}$ | — | February 14, 2012 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550240 | 2012 CA$_{33}$ | — | November 22, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550241 | 2012 CD$_{34}$ | — | November 1, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550242 | 2012 CU$_{34}$ | — | January 18, 2012 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550243 | 2012 CA$_{35}$ | — | October 19, 2006 | Kitt Peak | L. H. Wasserman | · | 1.3 km | MPC · JPL |
| 550244 | 2012 CW$_{40}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 2.3 km | MPC · JPL |
| 550245 | 2012 CE$_{41}$ | — | February 3, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550246 | 2012 CY$_{41}$ | — | January 27, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550247 | 2012 CY$_{42}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.4 km | MPC · JPL |
| 550248 | 2012 CD$_{44}$ | — | January 19, 2012 | Kitt Peak | Spacewatch | H | 600 m | MPC · JPL |
| 550249 | 2012 CZ$_{45}$ | — | August 8, 2005 | Cerro Tololo | Cerro Tololo Obs. | · | 2.0 km | MPC · JPL |
| 550250 | 2012 CJ$_{52}$ | — | January 1, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550251 | 2012 CJ$_{53}$ | — | January 21, 2012 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550252 | 2012 CT$_{53}$ | — | February 15, 2012 | Haleakala | Pan-STARRS | · | 2.0 km | MPC · JPL |
| 550253 | 2012 CH$_{54}$ | — | February 15, 2012 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550254 | 2012 CE$_{56}$ | — | April 7, 2007 | Mount Lemmon | Mount Lemmon Survey | T$_j$ (2.95) | 3.9 km | MPC · JPL |
| 550255 | 2012 CM$_{56}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550256 | 2012 CN$_{59}$ | — | February 14, 2012 | Haleakala | Pan-STARRS | · | 1.4 km | MPC · JPL |
| 550257 | 2012 CW$_{59}$ | — | February 3, 2012 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550258 | 2012 CB$_{60}$ | — | February 15, 2012 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |
| 550259 | 2012 CC$_{60}$ | — | December 26, 2014 | Haleakala | Pan-STARRS | · | 590 m | MPC · JPL |
| 550260 | 2012 CL$_{60}$ | — | May 3, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550261 | 2012 CG$_{63}$ | — | February 14, 2012 | Haleakala | Pan-STARRS | · | 1.6 km | MPC · JPL |
| 550262 | 2012 CO$_{63}$ | — | March 5, 2017 | Haleakala | Pan-STARRS | · | 2.0 km | MPC · JPL |
| 550263 | 2012 CO$_{68}$ | — | February 3, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550264 | 2012 DG$_1$ | — | May 31, 2003 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550265 | 2012 DA$_2$ | — | September 29, 2005 | Kitt Peak | Spacewatch | · | 1.5 km | MPC · JPL |
| 550266 | 2012 DF$_2$ | — | December 1, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550267 | 2012 DO$_3$ | — | August 16, 2009 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550268 | 2012 DR$_3$ | — | February 16, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550269 | 2012 DD$_4$ | — | March 8, 2003 | Anderson Mesa | LONEOS | · | 2.9 km | MPC · JPL |
| 550270 | 2012 DU$_7$ | — | March 10, 2003 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550271 | 2012 DP$_8$ | — | February 20, 2012 | Haleakala | Pan-STARRS | AMO | 390 m | MPC · JPL |
| 550272 | 2012 DM$_9$ | — | September 14, 2005 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550273 | 2012 DY$_{12}$ | — | November 2, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550274 | 2012 DC$_{14}$ | — | January 3, 2012 | Kitt Peak | Spacewatch | · | 1.5 km | MPC · JPL |
| 550275 | 2012 DG$_{14}$ | — | November 5, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550276 | 2012 DG$_{15}$ | — | January 17, 2007 | Catalina | CSS | · | 2.3 km | MPC · JPL |
| 550277 | 2012 DB$_{17}$ | — | February 22, 2012 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550278 | 2012 DF$_{19}$ | — | October 31, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550279 | 2012 DV$_{20}$ | — | August 27, 2005 | Palomar | NEAT | · | 2.1 km | MPC · JPL |
| 550280 | 2012 DH$_{21}$ | — | January 10, 2007 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550281 | 2012 DM$_{22}$ | — | May 5, 2008 | Catalina | CSS | · | 2.1 km | MPC · JPL |
| 550282 | 2012 DF$_{25}$ | — | April 1, 2003 | Apache Point | SDSS Collaboration | · | 1.9 km | MPC · JPL |
| 550283 | 2012 DW$_{26}$ | — | December 30, 2011 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550284 | 2012 DG$_{27}$ | — | August 7, 2004 | Palomar | NEAT | · | 1.7 km | MPC · JPL |
| 550285 | 2012 DR$_{28}$ | — | October 1, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550286 | 2012 DA$_{30}$ | — | February 9, 2007 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550287 | 2012 DS$_{34}$ | — | August 31, 2005 | Palomar | NEAT | · | 1.9 km | MPC · JPL |
| 550288 | 2012 DW$_{37}$ | — | February 25, 2003 | Campo Imperatore | CINEOS | · | 2.1 km | MPC · JPL |
| 550289 | 2012 DS$_{40}$ | — | December 28, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550290 | 2012 DH$_{46}$ | — | October 15, 2001 | Palomar | NEAT | · | 2.1 km | MPC · JPL |
| 550291 | 2012 DH$_{48}$ | — | February 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550292 | 2012 DQ$_{50}$ | — | February 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550293 | 2012 DV$_{55}$ | — | February 24, 2012 | Haleakala | Pan-STARRS | · | 710 m | MPC · JPL |
| 550294 | 2012 DQ$_{56}$ | — | February 1, 2012 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550295 | 2012 DZ$_{62}$ | — | January 18, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550296 | 2012 DP$_{64}$ | — | April 1, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550297 | 2012 DL$_{66}$ | — | February 9, 2005 | Anderson Mesa | LONEOS | · | 710 m | MPC · JPL |
| 550298 | 2012 DK$_{67}$ | — | April 16, 2005 | Vail-Jarnac | Jarnac Obs. | · | 780 m | MPC · JPL |
| 550299 | 2012 DU$_{70}$ | — | September 19, 2010 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550300 | 2012 DR$_{71}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |

## 550301–550400

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550301 | 2012 DF$_{72}$ | — | January 27, 2003 | Palomar | NEAT | · | 2.2 km | MPC · JPL |
| 550302 | 2012 DW$_{74}$ | — | August 25, 2000 | Cerro Tololo | R. Millis, L. H. Wasserman | · | 2.3 km | MPC · JPL |
| 550303 | 2012 DK$_{75}$ | — | October 11, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550304 | 2012 DJ$_{78}$ | — | March 29, 2008 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550305 | 2012 DQ$_{78}$ | — | November 1, 2005 | Kitt Peak | Spacewatch | T$_j$ (2.98) | 4.2 km | MPC · JPL |
| 550306 | 2012 DZ$_{78}$ | — | March 3, 2000 | Apache Point | SDSS | · | 1.2 km | MPC · JPL |
| 550307 | 2012 DR$_{79}$ | — | January 29, 2003 | Palomar | NEAT | · | 1.6 km | MPC · JPL |
| 550308 | 2012 DX$_{79}$ | — | October 23, 2001 | Palomar | NEAT | · | 2.9 km | MPC · JPL |
| 550309 | 2012 DT$_{80}$ | — | February 26, 2012 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550310 | 2012 DD$_{86}$ | — | January 19, 2012 | Haleakala | Pan-STARRS | centaur | 55 km | MPC · JPL |
| 550311 | 2012 DO$_{86}$ | — | March 24, 2003 | Haleakala | AMOS | · | 2.7 km | MPC · JPL |
| 550312 | 2012 DD$_{87}$ | — | January 18, 2012 | Kitt Peak | Spacewatch | · | 620 m | MPC · JPL |
| 550313 | 2012 DE$_{87}$ | — | February 13, 2012 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550314 | 2012 DL$_{87}$ | — | February 24, 2012 | Haleakala | Pan-STARRS | · | 940 m | MPC · JPL |
| 550315 | 2012 DP$_{87}$ | — | February 24, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550316 | 2012 DT$_{87}$ | — | December 25, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550317 | 2012 DT$_{88}$ | — | December 21, 2006 | Kitt Peak | L. H. Wasserman | GEF | 1.6 km | MPC · JPL |
| 550318 | 2012 DZ$_{90}$ | — | August 6, 2005 | Palomar | NEAT | · | 1.5 km | MPC · JPL |
| 550319 | 2012 DV$_{91}$ | — | April 4, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550320 | 2012 DK$_{94}$ | — | February 15, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550321 | 2012 DP$_{94}$ | — | August 6, 2005 | Palomar | NEAT | · | 2.4 km | MPC · JPL |
| 550322 | 2012 DJ$_{96}$ | — | February 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550323 | 2012 DY$_{96}$ | — | August 26, 2005 | Palomar | NEAT | · | 2.8 km | MPC · JPL |
| 550324 | 2012 DU$_{97}$ | — | March 14, 2012 | Haleakala | Pan-STARRS | HNS | 1.4 km | MPC · JPL |
| 550325 | 2012 DC$_{101}$ | — | February 21, 2012 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550326 | 2012 DT$_{101}$ | — | August 31, 2005 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550327 | 2012 DG$_{102}$ | — | November 12, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550328 | 2012 DP$_{102}$ | — | April 6, 2008 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550329 | 2012 DR$_{102}$ | — | February 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550330 | 2012 DS$_{103}$ | — | February 27, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550331 | 2012 DH$_{104}$ | — | October 26, 2005 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550332 | 2012 DM$_{104}$ | — | January 29, 2007 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550333 | 2012 DY$_{105}$ | — | February 29, 2012 | Oukaimeden | M. Ory | · | 1.9 km | MPC · JPL |
| 550334 | 2012 DA$_{106}$ | — | February 20, 2012 | Haleakala | Pan-STARRS | · | 2.2 km | MPC · JPL |
| 550335 | 2012 DJ$_{106}$ | — | February 28, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550336 | 2012 DD$_{107}$ | — | February 27, 2012 | Kitt Peak | Spacewatch | · | 650 m | MPC · JPL |
| 550337 | 2012 DL$_{108}$ | — | February 16, 2012 | Haleakala | Pan-STARRS | · | 570 m | MPC · JPL |
| 550338 | 2012 DH$_{109}$ | — | February 20, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550339 | 2012 DJ$_{111}$ | — | February 18, 2012 | Catalina | CSS | · | 1.7 km | MPC · JPL |
| 550340 | 2012 DY$_{111}$ | — | October 28, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550341 | 2012 DH$_{115}$ | — | February 27, 2012 | Haleakala | Pan-STARRS | · | 1.5 km | MPC · JPL |
| 550342 | 2012 DL$_{116}$ | — | January 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550343 | 2012 DM$_{116}$ | — | February 27, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550344 | 2012 DQ$_{121}$ | — | February 20, 2012 | Haleakala | Pan-STARRS | · | 1.9 km | MPC · JPL |
| 550345 | 2012 ED$_3$ | — | January 10, 2007 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550346 | 2012 ED$_6$ | — | March 13, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550347 | 2012 EH$_6$ | — | February 26, 2012 | Haleakala | Pan-STARRS | · | 860 m | MPC · JPL |
| 550348 | 2012 EK$_9$ | — | January 19, 2012 | Haleakala | Pan-STARRS | · | 1.1 km | MPC · JPL |
| 550349 | 2012 EH$_{16}$ | — | March 22, 2012 | Catalina | CSS | · | 2.1 km | MPC · JPL |
| 550350 | 2012 EO$_{18}$ | — | March 14, 2012 | Haleakala | Pan-STARRS | H | 640 m | MPC · JPL |
| 550351 | 2012 ER$_{20}$ | — | May 8, 2013 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550352 | 2012 EC$_{21}$ | — | April 24, 2003 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550353 | 2012 ED$_{21}$ | — | January 28, 2016 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550354 | 2012 EO$_{22}$ | — | March 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550355 | 2012 EP$_{23}$ | — | March 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550356 | 2012 EL$_{25}$ | — | March 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550357 | 2012 ED$_{26}$ | — | March 14, 2012 | Catalina | CSS | · | 2.1 km | MPC · JPL |
| 550358 | 2012 FA$_3$ | — | March 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.0 km | MPC · JPL |
| 550359 | 2012 FA$_4$ | — | December 27, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550360 | 2012 FF$_4$ | — | January 10, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550361 | 2012 FF$_{10}$ | — | February 29, 2012 | Catalina | CSS | · | 2.6 km | MPC · JPL |
| 550362 | 2012 FX$_{12}$ | — | April 16, 2005 | Kitt Peak | Spacewatch | MAS | 650 m | MPC · JPL |
| 550363 | 2012 FH$_{14}$ | — | March 31, 2003 | Apache Point | SDSS Collaboration | · | 3.0 km | MPC · JPL |
| 550364 | 2012 FO$_{14}$ | — | March 18, 2012 | Piszkesteto | K. Sárneczky | · | 1.6 km | MPC · JPL |
| 550365 | 2012 FM$_{17}$ | — | April 27, 2008 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550366 | 2012 FY$_{17}$ | — | March 17, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550367 | 2012 FO$_{18}$ | — | February 21, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550368 | 2012 FE$_{20}$ | — | February 25, 2012 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550369 | 2012 FP$_{22}$ | — | October 7, 2010 | Kitt Peak | Spacewatch | · | 1.8 km | MPC · JPL |
| 550370 | 2012 FF$_{26}$ | — | March 26, 2003 | Kitt Peak | Spacewatch | WIT | 1.4 km | MPC · JPL |
| 550371 | 2012 FK$_{26}$ | — | April 16, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550372 | 2012 FO$_{29}$ | — | November 9, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550373 | 2012 FS$_{41}$ | — | March 10, 2003 | Anderson Mesa | LONEOS | ADE | 1.9 km | MPC · JPL |
| 550374 | 2012 FT$_{46}$ | — | March 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550375 | 2012 FR$_{47}$ | — | March 13, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 660 m | MPC · JPL |
| 550376 | 2012 FT$_{47}$ | — | October 10, 2004 | Kitt Peak | L. H. Wasserman, J. R. Lovering | · | 590 m | MPC · JPL |
| 550377 | 2012 FM$_{50}$ | — | February 24, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550378 | 2012 FG$_{51}$ | — | March 24, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550379 | 2012 FU$_{52}$ | — | March 12, 2012 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550380 | 2012 FG$_{53}$ | — | March 22, 2012 | Catalina | CSS | · | 2.7 km | MPC · JPL |
| 550381 | 2012 FC$_{54}$ | — | February 27, 2012 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550382 | 2012 FC$_{57}$ | — | November 28, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550383 | 2012 FA$_{61}$ | — | September 15, 2009 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550384 | 2012 FB$_{61}$ | — | March 28, 2012 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550385 | 2012 FY$_{61}$ | — | November 1, 2000 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550386 | 2012 FO$_{66}$ | — | December 23, 2000 | Apache Point | SDSS | ERI | 1.6 km | MPC · JPL |
| 550387 | 2012 FH$_{74}$ | — | March 24, 2012 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550388 | 2012 FQ$_{77}$ | — | March 10, 2003 | Anderson Mesa | LONEOS | · | 2.9 km | MPC · JPL |
| 550389 | 2012 FO$_{78}$ | — | January 2, 2011 | Mayhill-ISON | L. Elenin | V | 920 m | MPC · JPL |
| 550390 | 2012 FU$_{79}$ | — | April 12, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 620 m | MPC · JPL |
| 550391 | 2012 FE$_{80}$ | — | February 23, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550392 | 2012 FV$_{81}$ | — | January 28, 2006 | Catalina | CSS | · | 4.4 km | MPC · JPL |
| 550393 | 2012 FU$_{85}$ | — | March 21, 2012 | Catalina | CSS | · | 1.7 km | MPC · JPL |
| 550394 | 2012 FY$_{85}$ | — | March 24, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550395 | 2012 FB$_{87}$ | — | March 29, 2012 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550396 | 2012 FS$_{87}$ | — | March 28, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550397 | 2012 FA$_{88}$ | — | March 5, 2008 | Kitt Peak | Spacewatch | · | 1.1 km | MPC · JPL |
| 550398 | 2012 FA$_{90}$ | — | December 4, 2015 | Haleakala | Pan-STARRS | · | 2.9 km | MPC · JPL |
| 550399 | 2012 FW$_{94}$ | — | April 1, 2017 | Haleakala | Pan-STARRS | · | 2.1 km | MPC · JPL |
| 550400 | 2012 FB$_{104}$ | — | March 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |

## 550401–550500

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550401 | 2012 FN$_{104}$ | — | March 29, 2012 | Haleakala | Pan-STARRS | · | 2.2 km | MPC · JPL |
| 550402 | 2012 GW | — | March 14, 2012 | Haleakala | Pan-STARRS | H | 440 m | MPC · JPL |
| 550403 | 2012 GZ$_1$ | — | April 1, 2012 | Catalina | CSS | · | 1.8 km | MPC · JPL |
| 550404 | 2012 GO$_5$ | — | September 15, 2009 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550405 | 2012 GL$_8$ | — | March 5, 2012 | Kitt Peak | Spacewatch | · | 2.3 km | MPC · JPL |
| 550406 | 2012 GH$_9$ | — | April 13, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550407 | 2012 GW$_{10}$ | — | January 4, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550408 | 2012 GF$_{13}$ | — | November 17, 2006 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550409 | 2012 GN$_{13}$ | — | February 14, 2007 | Lulin | LUSS | · | 2.7 km | MPC · JPL |
| 550410 | 2012 GD$_{14}$ | — | March 11, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550411 | 2012 GF$_{14}$ | — | April 13, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550412 | 2012 GU$_{24}$ | — | August 22, 2009 | Hibiscus | N. Teamo | NYS | 550 m | MPC · JPL |
| 550413 | 2012 GZ$_{29}$ | — | March 27, 2003 | Palomar | NEAT | · | 1.4 km | MPC · JPL |
| 550414 | 2012 GN$_{30}$ | — | November 1, 1999 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550415 | 2012 GU$_{30}$ | — | April 12, 2012 | Haleakala | Pan-STARRS | · | 2.2 km | MPC · JPL |
| 550416 | 2012 GS$_{32}$ | — | November 3, 2005 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550417 | 2012 GV$_{32}$ | — | October 24, 2005 | Kitt Peak | Spacewatch | GEF | 1.1 km | MPC · JPL |
| 550418 | 2012 GG$_{35}$ | — | March 9, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550419 | 2012 GX$_{38}$ | — | July 29, 2008 | Crni Vrh | J. Zakrajšek | · | 2.8 km | MPC · JPL |
| 550420 | 2012 GF$_{42}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550421 | 2012 GN$_{42}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.1 km | MPC · JPL |
| 550422 | 2012 GR$_{44}$ | — | August 9, 2013 | Catalina | CSS | · | 2.3 km | MPC · JPL |
| 550423 | 2012 HH | — | October 31, 2005 | Palomar | NEAT | H | 730 m | MPC · JPL |
| 550424 | 2012 HP$_{11}$ | — | March 27, 2012 | Catalina | CSS | · | 1.8 km | MPC · JPL |
| 550425 | 2012 HO$_{14}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550426 | 2012 HW$_{14}$ | — | December 20, 2007 | Kitt Peak | Spacewatch | · | 640 m | MPC · JPL |
| 550427 | 2012 HK$_{15}$ | — | February 8, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550428 | 2012 HT$_{15}$ | — | June 6, 2002 | Palomar | NEAT | · | 660 m | MPC · JPL |
| 550429 | 2012 HA$_{16}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.2 km | MPC · JPL |
| 550430 | 2012 HY$_{23}$ | — | December 6, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550431 | 2012 HH$_{24}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550432 | 2012 HP$_{27}$ | — | April 24, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550433 | 2012 HW$_{31}$ | — | March 4, 2001 | Kitt Peak | Spacewatch | · | 720 m | MPC · JPL |
| 550434 | 2012 HZ$_{34}$ | — | March 24, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550435 | 2012 HZ$_{35}$ | — | March 29, 2012 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550436 | 2012 HP$_{36}$ | — | April 22, 2012 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550437 | 2012 HD$_{38}$ | — | March 15, 2007 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550438 | 2012 HG$_{40}$ | — | March 29, 2012 | Siding Spring | SSS | · | 1.5 km | MPC · JPL |
| 550439 | 2012 HW$_{40}$ | — | May 28, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550440 | 2012 HT$_{43}$ | — | February 22, 2007 | Catalina | CSS | · | 2.7 km | MPC · JPL |
| 550441 | 2012 HL$_{49}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.8 km | MPC · JPL |
| 550442 | 2012 HC$_{53}$ | — | April 27, 2012 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550443 | 2012 HN$_{54}$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550444 | 2012 HS$_{59}$ | — | January 29, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550445 | 2012 HH$_{60}$ | — | November 17, 2009 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550446 | 2012 HQ$_{60}$ | — | April 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550447 | 2012 HS$_{60}$ | — | April 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550448 | 2012 HP$_{65}$ | — | April 20, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550449 | 2012 HK$_{68}$ | — | April 12, 2002 | Palomar | NEAT | · | 3.9 km | MPC · JPL |
| 550450 | 2012 HB$_{76}$ | — | April 28, 2003 | Kitt Peak | Spacewatch | · | 2.0 km | MPC · JPL |
| 550451 | 2012 HW$_{85}$ | — | April 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550452 | 2012 HY$_{85}$ | — | September 20, 2009 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550453 | 2012 HO$_{86}$ | — | April 21, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550454 | 2012 HK$_{88}$ | — | April 27, 2012 | Haleakala | Pan-STARRS | · | 620 m | MPC · JPL |
| 550455 | 2012 HX$_{88}$ | — | April 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550456 | 2012 HB$_{99}$ | — | April 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550457 | 2012 HP$_{100}$ | — | April 21, 2012 | Mayhill-ISON | L. Elenin | · | 770 m | MPC · JPL |
| 550458 | 2012 HL$_{102}$ | — | April 30, 2012 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550459 | 2012 JU$_8$ | — | April 15, 2012 | Haleakala | Pan-STARRS | · | 2.8 km | MPC · JPL |
| 550460 | 2012 JU$_{12}$ | — | December 13, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550461 | 2012 JF$_{14}$ | — | March 12, 2002 | Kitt Peak | Spacewatch | · | 1.9 km | MPC · JPL |
| 550462 | 2012 JU$_{14}$ | — | January 12, 2002 | Palomar | NEAT | · | 3.1 km | MPC · JPL |
| 550463 | 2012 JS$_{15}$ | — | August 21, 2008 | Kitt Peak | Spacewatch | · | 2.6 km | MPC · JPL |
| 550464 | 2012 JV$_{15}$ | — | May 12, 2012 | Haleakala | Pan-STARRS | · | 1.8 km | MPC · JPL |
| 550465 | 2012 JE$_{19}$ | — | February 13, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 800 m | MPC · JPL |
| 550466 | 2012 JJ$_{19}$ | — | March 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550467 | 2012 JH$_{22}$ | — | April 20, 2012 | Mount Lemmon | Mount Lemmon Survey | H | 540 m | MPC · JPL |
| 550468 | 2012 JT$_{31}$ | — | January 2, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550469 | 2012 JU$_{31}$ | — | April 13, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 820 m | MPC · JPL |
| 550470 | 2012 JF$_{32}$ | — | October 18, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550471 | 2012 JJ$_{32}$ | — | March 19, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550472 | 2012 JL$_{36}$ | — | May 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550473 | 2012 JX$_{36}$ | — | September 11, 2005 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550474 | 2012 JW$_{40}$ | — | March 14, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550475 | 2012 JE$_{43}$ | — | July 29, 2000 | Anderson Mesa | LONEOS | · | 800 m | MPC · JPL |
| 550476 | 2012 JM$_{45}$ | — | October 7, 2004 | Palomar | NEAT | GEF | 1.4 km | MPC · JPL |
| 550477 | 2012 JR$_{54}$ | — | May 1, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550478 | 2012 JM$_{59}$ | — | March 28, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550479 | 2012 JV$_{60}$ | — | March 9, 2002 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550480 | 2012 JJ$_{61}$ | — | May 14, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.1 km | MPC · JPL |
| 550481 | 2012 JP$_{65}$ | — | November 10, 2009 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550482 | 2012 JS$_{65}$ | — | April 19, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550483 | 2012 JR$_{70}$ | — | May 12, 2012 | Haleakala | Pan-STARRS | · | 780 m | MPC · JPL |
| 550484 | 2012 KN$_1$ | — | April 15, 2004 | Apache Point | SDSS Collaboration | H | 830 m | MPC · JPL |
| 550485 | 2012 KW$_2$ | — | December 30, 2005 | Kitt Peak | Spacewatch | · | 2.3 km | MPC · JPL |
| 550486 | 2012 KX$_5$ | — | February 25, 2003 | Haleakala | AMOS | · | 940 m | MPC · JPL |
| 550487 | 2012 KV$_{10}$ | — | April 27, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550488 | 2012 KE$_{11}$ | — | August 21, 2002 | Palomar | NEAT | H | 820 m | MPC · JPL |
| 550489 | 2012 KF$_{13}$ | — | May 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550490 | 2012 KY$_{19}$ | — | September 18, 2003 | Haleakala | AMOS | · | 860 m | MPC · JPL |
| 550491 | 2012 KR$_{22}$ | — | February 8, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550492 | 2012 KO$_{27}$ | — | December 28, 2005 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550493 | 2012 KK$_{33}$ | — | May 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 830 m | MPC · JPL |
| 550494 | 2012 KH$_{35}$ | — | February 26, 2008 | Mount Lemmon | Mount Lemmon Survey | MAS | 590 m | MPC · JPL |
| 550495 | 2012 KO$_{35}$ | — | September 11, 2004 | Kitt Peak | Spacewatch | · | 2.1 km | MPC · JPL |
| 550496 | 2012 KF$_{37}$ | — | February 7, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.0 km | MPC · JPL |
| 550497 | 2012 KA$_{39}$ | — | April 27, 2012 | Haleakala | Pan-STARRS | · | 710 m | MPC · JPL |
| 550498 | 2012 KF$_{40}$ | — | April 21, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550499 | 2012 KY$_{47}$ | — | January 7, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550500 | 2012 KE$_{50}$ | — | September 26, 2003 | Apache Point | SDSS | · | 4.4 km | MPC · JPL |

## 550501–550600

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550501 | 2012 KP$_{56}$ | — | September 9, 2013 | Haleakala | Pan-STARRS | · | 2.1 km | MPC · JPL |
| 550502 | 2012 KW$_{59}$ | — | May 18, 2012 | Haleakala | Pan-STARRS | · | 2.4 km | MPC · JPL |
| 550503 | 2012 LJ$_1$ | — | June 9, 2012 | Haleakala | Pan-STARRS | H | 680 m | MPC · JPL |
| 550504 | 2012 LP$_7$ | — | September 7, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.9 km | MPC · JPL |
| 550505 | 2012 LC$_{11}$ | — | March 11, 2008 | Siding Spring | SSS | · | 1.4 km | MPC · JPL |
| 550506 | 2012 LW$_{11}$ | — | May 16, 2012 | Kitt Peak | Spacewatch | · | 4.2 km | MPC · JPL |
| 550507 | 2012 LX$_{15}$ | — | October 24, 2009 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550508 | 2012 LZ$_{16}$ | — | September 1, 2005 | Palomar | NEAT | · | 980 m | MPC · JPL |
| 550509 | 2012 LW$_{20}$ | — | March 16, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550510 | 2012 LN$_{22}$ | — | May 13, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550511 | 2012 LR$_{27}$ | — | October 29, 2003 | Socorro | LINEAR | · | 3.1 km | MPC · JPL |
| 550512 | 2012 LE$_{29}$ | — | February 10, 2016 | Haleakala | Pan-STARRS | · | 3.4 km | MPC · JPL |
| 550513 | 2012 MB$_8$ | — | September 21, 2003 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550514 | 2012 MM$_{10}$ | — | March 11, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 3.2 km | MPC · JPL |
| 550515 | 2012 MB$_{11}$ | — | October 17, 2003 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550516 | 2012 MT$_{11}$ | — | December 11, 2006 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |
| 550517 | 2012 MH$_{12}$ | — | June 16, 2012 | Haleakala | Pan-STARRS | · | 3.7 km | MPC · JPL |
| 550518 | 2012 MK$_{13}$ | — | October 25, 2003 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550519 | 2012 MZ$_{14}$ | — | November 21, 2008 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550520 | 2012 MT$_{15}$ | — | December 29, 2003 | Kitt Peak | Spacewatch | · | 4.0 km | MPC · JPL |
| 550521 | 2012 MP$_{17}$ | — | June 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550522 | 2012 MR$_{17}$ | — | December 8, 2013 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550523 | 2012 ME$_{18}$ | — | June 14, 2007 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550524 | 2012 MS$_{18}$ | — | June 17, 2012 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550525 Sigourneyweaver | 2012 NL | Sigourneyweaver | July 12, 2012 | Zelenchukskaya Stn | T. V. Kryachko, B. Satovski | T$_j$ (2.96) | 3.2 km | MPC · JPL |
| 550526 | 2012 OM | — | July 16, 2012 | Castelmartini | E. Prosperi, S. Prosperi | H | 570 m | MPC · JPL |
| 550527 | 2012 OY$_2$ | — | October 5, 2007 | Kitt Peak | Spacewatch | · | 3.9 km | MPC · JPL |
| 550528 | 2012 ON$_6$ | — | September 21, 2007 | XuYi | PMO NEO | · | 3.4 km | MPC · JPL |
| 550529 | 2012 OY$_6$ | — | July 21, 2012 | Siding Spring | SSS | · | 2.8 km | MPC · JPL |
| 550530 | 2012 OF$_7$ | — | July 19, 2012 | Siding Spring | SSS | · | 1.4 km | MPC · JPL |
| 550531 | 2012 PP$_1$ | — | August 27, 2005 | Palomar | NEAT | · | 940 m | MPC · JPL |
| 550532 | 2012 PR$_1$ | — | November 17, 2009 | Kitt Peak | Spacewatch | · | 680 m | MPC · JPL |
| 550533 | 2012 PM$_2$ | — | August 8, 2012 | Haleakala | Pan-STARRS | · | 3.2 km | MPC · JPL |
| 550534 | 2012 PU$_5$ | — | July 28, 2012 | Haleakala | Pan-STARRS | · | 3.6 km | MPC · JPL |
| 550535 | 2012 PK$_7$ | — | August 8, 2012 | Haleakala | Pan-STARRS | T$_j$ (2.99) | 3.9 km | MPC · JPL |
| 550536 | 2012 PB$_9$ | — | April 28, 2011 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550537 | 2012 PG$_9$ | — | August 8, 2012 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550538 | 2012 PX$_{10}$ | — | September 14, 2004 | Socorro | LINEAR | H | 930 m | MPC · JPL |
| 550539 | 2012 PS$_{12}$ | — | August 10, 2012 | Kitt Peak | Spacewatch | · | 680 m | MPC · JPL |
| 550540 | 2012 PG$_{13}$ | — | August 16, 2002 | Palomar | NEAT | · | 710 m | MPC · JPL |
| 550541 | 2012 PR$_{15}$ | — | January 13, 2010 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550542 | 2012 PK$_{20}$ | — | December 2, 2008 | Kitt Peak | Spacewatch | · | 3.7 km | MPC · JPL |
| 550543 | 2012 PJ$_{22}$ | — | December 4, 2007 | Catalina | CSS | · | 3.5 km | MPC · JPL |
| 550544 | 2012 PV$_{22}$ | — | August 5, 2007 | Great Shefford | P. Birtwhistle | · | 2.4 km | MPC · JPL |
| 550545 | 2012 PF$_{23}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550546 | 2012 PH$_{26}$ | — | August 12, 2012 | Siding Spring | SSS | · | 3.1 km | MPC · JPL |
| 550547 | 2012 PQ$_{26}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550548 | 2012 PG$_{27}$ | — | September 9, 2007 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550549 | 2012 PY$_{30}$ | — | March 11, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 3.4 km | MPC · JPL |
| 550550 | 2012 PF$_{32}$ | — | July 18, 2012 | Catalina | CSS | · | 940 m | MPC · JPL |
| 550551 | 2012 PR$_{33}$ | — | September 18, 2007 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550552 | 2012 PD$_{34}$ | — | January 25, 2011 | Mount Lemmon | Mount Lemmon Survey | H | 450 m | MPC · JPL |
| 550553 | 2012 PG$_{35}$ | — | August 11, 2012 | Siding Spring | SSS | · | 680 m | MPC · JPL |
| 550554 | 2012 PO$_{36}$ | — | August 24, 2001 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550555 | 2012 PD$_{38}$ | — | August 6, 2012 | Haleakala | Pan-STARRS | · | 3.4 km | MPC · JPL |
| 550556 | 2012 PF$_{40}$ | — | June 23, 1995 | Kitt Peak | Spacewatch | · | 3.5 km | MPC · JPL |
| 550557 | 2012 PG$_{40}$ | — | November 20, 2008 | Kitt Peak | Spacewatch | · | 3.7 km | MPC · JPL |
| 550558 | 2012 PU$_{40}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 830 m | MPC · JPL |
| 550559 | 2012 PZ$_{40}$ | — | August 6, 2012 | Haleakala | Pan-STARRS | · | 2.9 km | MPC · JPL |
| 550560 | 2012 PF$_{42}$ | — | February 14, 2010 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550561 | 2012 PQ$_{42}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 750 m | MPC · JPL |
| 550562 | 2012 PZ$_{44}$ | — | August 10, 2012 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550563 | 2012 PK$_{45}$ | — | March 21, 2004 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550564 | 2012 PU$_{45}$ | — | August 17, 2011 | Haleakala | Pan-STARRS | other TNO · critical | 172 km | MPC · JPL |
| 550565 | 2012 PL$_{47}$ | — | July 15, 2016 | Mount Lemmon | Mount Lemmon Survey | · | 780 m | MPC · JPL |
| 550566 | 2012 PM$_{47}$ | — | February 24, 2014 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550567 | 2012 PT$_{48}$ | — | August 12, 2012 | Siding Spring | SSS | · | 780 m | MPC · JPL |
| 550568 | 2012 PQ$_{49}$ | — | August 9, 2012 | Les Engarouines | L. Bernasconi | · | 3.4 km | MPC · JPL |
| 550569 | 2012 PT$_{49}$ | — | January 16, 2015 | Haleakala | Pan-STARRS | · | 3.2 km | MPC · JPL |
| 550570 | 2012 PY$_{49}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 2.4 km | MPC · JPL |
| 550571 | 2012 PS$_{55}$ | — | August 13, 2012 | Haleakala | Pan-STARRS | · | 2.1 km | MPC · JPL |
| 550572 | 2012 QB$_1$ | — | February 22, 2004 | Kitt Peak | Spacewatch | · | 3.2 km | MPC · JPL |
| 550573 | 2012 QP$_6$ | — | September 16, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550574 | 2012 QT$_9$ | — | January 19, 2007 | Mauna Kea | P. A. Wiegert | (2076) | 650 m | MPC · JPL |
| 550575 | 2012 QC$_{12}$ | — | October 11, 2007 | Catalina | CSS | · | 3.5 km | MPC · JPL |
| 550576 | 2012 QQ$_{13}$ | — | August 17, 2012 | Haleakala | Pan-STARRS | · | 2.8 km | MPC · JPL |
| 550577 | 2012 QB$_{15}$ | — | August 14, 2012 | Siding Spring | SSS | · | 3.7 km | MPC · JPL |
| 550578 | 2012 QM$_{15}$ | — | December 18, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 3.9 km | MPC · JPL |
| 550579 | 2012 QP$_{15}$ | — | May 9, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550580 | 2012 QJ$_{17}$ | — | May 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550581 | 2012 QK$_{17}$ | — | August 26, 2012 | La Sagra | OAM Obs. | · | 3.6 km | MPC · JPL |
| 550582 | 2012 QG$_{20}$ | — | February 12, 2004 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550583 | 2012 QO$_{20}$ | — | December 29, 2008 | Kitt Peak | Spacewatch | · | 3.5 km | MPC · JPL |
| 550584 | 2012 QV$_{22}$ | — | August 17, 2012 | Les Engarouines | L. Bernasconi | · | 3.1 km | MPC · JPL |
| 550585 | 2012 QE$_{24}$ | — | August 24, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550586 | 2012 QE$_{25}$ | — | November 20, 2007 | Mount Lemmon | Mount Lemmon Survey | HYG | 2.7 km | MPC · JPL |
| 550587 | 2012 QY$_{25}$ | — | February 16, 2005 | La Silla | A. Boattini | · | 660 m | MPC · JPL |
| 550588 | 2012 QZ$_{29}$ | — | December 1, 2005 | Kitt Peak | L. H. Wasserman, R. Millis | · | 820 m | MPC · JPL |
| 550589 | 2012 QG$_{31}$ | — | February 12, 2004 | Kitt Peak | Spacewatch | · | 3.5 km | MPC · JPL |
| 550590 | 2012 QR$_{32}$ | — | August 25, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550591 | 2012 QC$_{33}$ | — | August 25, 2012 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550592 | 2012 QH$_{34}$ | — | August 14, 2012 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550593 | 2012 QO$_{34}$ | — | February 3, 2009 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550594 | 2012 QT$_{34}$ | — | August 25, 2012 | Kitt Peak | Spacewatch | 7:4 | 3.5 km | MPC · JPL |
| 550595 | 2012 QP$_{38}$ | — | November 3, 2007 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550596 | 2012 QX$_{38}$ | — | August 5, 2005 | Palomar | NEAT | · | 860 m | MPC · JPL |
| 550597 | 2012 QT$_{40}$ | — | July 19, 2012 | Siding Spring | SSS | · | 820 m | MPC · JPL |
| 550598 | 2012 QT$_{41}$ | — | August 6, 2005 | Palomar | NEAT | · | 900 m | MPC · JPL |
| 550599 | 2012 QC$_{42}$ | — | August 17, 2001 | Palomar | NEAT | · | 900 m | MPC · JPL |
| 550600 | 2012 QJ$_{42}$ | — | August 16, 2012 | Haleakala | Pan-STARRS | L5 | 6.6 km | MPC · JPL |

## 550601–550700

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550601 | 2012 QS$_{42}$ | — | August 16, 2012 | ESA OGS | ESA OGS | · | 2.8 km | MPC · JPL |
| 550602 | 2012 QY$_{42}$ | — | September 3, 2007 | Catalina | CSS | · | 3.5 km | MPC · JPL |
| 550603 | 2012 QX$_{43}$ | — | August 17, 2012 | Haleakala | Pan-STARRS | · | 3.9 km | MPC · JPL |
| 550604 | 2012 QF$_{46}$ | — | July 28, 2012 | Haleakala | Pan-STARRS | · | 3.7 km | MPC · JPL |
| 550605 | 2012 QQ$_{47}$ | — | July 29, 2008 | Kitt Peak | Spacewatch | · | 850 m | MPC · JPL |
| 550606 | 2012 QY$_{48}$ | — | August 24, 2012 | Kitt Peak | Spacewatch | · | 3.5 km | MPC · JPL |
| 550607 | 2012 QW$_{51}$ | — | March 13, 2005 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550608 | 2012 QC$_{57}$ | — | August 16, 2012 | ESA OGS | ESA OGS | · | 940 m | MPC · JPL |
| 550609 | 2012 QS$_{57}$ | — | November 17, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550610 | 2012 QF$_{63}$ | — | March 5, 2016 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550611 | 2012 QL$_{64}$ | — | August 26, 2012 | Haleakala | Pan-STARRS | · | 2.9 km | MPC · JPL |
| 550612 | 2012 RE$_4$ | — | November 22, 2005 | Palomar | NEAT | · | 1.0 km | MPC · JPL |
| 550613 | 2012 RO$_6$ | — | September 11, 2012 | Crni Vrh | J. Zakrajšek | T$_j$ (2.94) | 3.2 km | MPC · JPL |
| 550614 | 2012 RM$_7$ | — | August 29, 2002 | Palomar | NEAT | · | 680 m | MPC · JPL |
| 550615 | 2012 RP$_7$ | — | August 27, 2009 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550616 | 2012 RC$_9$ | — | October 30, 2002 | Haleakala | AMOS | · | 820 m | MPC · JPL |
| 550617 | 2012 RS$_9$ | — | September 14, 2012 | Mount Lemmon | Mount Lemmon Survey | H | 710 m | MPC · JPL |
| 550618 | 2012 RZ$_9$ | — | September 13, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 3.4 km | MPC · JPL |
| 550619 | 2012 RZ$_{11}$ | — | August 24, 2008 | Crni Vrh | J. Skvarč | · | 1.4 km | MPC · JPL |
| 550620 | 2012 RD$_{13}$ | — | September 13, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.5 km | MPC · JPL |
| 550621 | 2012 RU$_{13}$ | — | September 14, 2012 | Catalina | CSS | · | 3.7 km | MPC · JPL |
| 550622 | 2012 RV$_{13}$ | — | April 10, 2005 | Kitt Peak | Kitt Peak Obs. | · | 4.2 km | MPC · JPL |
| 550623 | 2012 RC$_{15}$ | — | September 15, 2012 | Catalina | CSS | · | 3.2 km | MPC · JPL |
| 550624 | 2012 RK$_{17}$ | — | July 29, 2005 | Palomar | NEAT | · | 820 m | MPC · JPL |
| 550625 | 2012 RY$_{18}$ | — | July 30, 2005 | Palomar | NEAT | (2076) | 780 m | MPC · JPL |
| 550626 | 2012 RD$_{21}$ | — | February 24, 2006 | Palomar | NEAT | H | 750 m | MPC · JPL |
| 550627 | 2012 RW$_{21}$ | — | August 23, 2012 | Les Engarouines | L. Bernasconi | · | 4.4 km | MPC · JPL |
| 550628 | 2012 RJ$_{23}$ | — | September 25, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550629 | 2012 RA$_{24}$ | — | May 21, 2001 | Cerro Tololo | J. L. Elliot, L. H. Wasserman | H | 780 m | MPC · JPL |
| 550630 | 2012 RX$_{25}$ | — | September 16, 2004 | Kitt Peak | Spacewatch | · | 1.1 km | MPC · JPL |
| 550631 | 2012 RA$_{27}$ | — | August 30, 2005 | Palomar | NEAT | · | 750 m | MPC · JPL |
| 550632 | 2012 RT$_{27}$ | — | January 20, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 3.7 km | MPC · JPL |
| 550633 | 2012 RF$_{32}$ | — | August 25, 2012 | Haleakala | Pan-STARRS | · | 710 m | MPC · JPL |
| 550634 | 2012 RB$_{33}$ | — | August 8, 2012 | Haleakala | Pan-STARRS | H | 520 m | MPC · JPL |
| 550635 | 2012 RF$_{35}$ | — | October 17, 2001 | Palomar | NEAT | · | 2.9 km | MPC · JPL |
| 550636 | 2012 RK$_{37}$ | — | May 1, 2008 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550637 | 2012 RW$_{37}$ | — | September 17, 2001 | Desert Eagle | W. K. Y. Yeung | · | 3.7 km | MPC · JPL |
| 550638 | 2012 RD$_{40}$ | — | July 6, 2005 | Siding Spring | SSS | · | 980 m | MPC · JPL |
| 550639 | 2012 RK$_{40}$ | — | August 14, 2012 | Haleakala | Pan-STARRS | · | 980 m | MPC · JPL |
| 550640 | 2012 RW$_{41}$ | — | June 4, 2011 | Lulin | LUSS | V | 590 m | MPC · JPL |
| 550641 | 2012 RT$_{42}$ | — | July 15, 2002 | Palomar | NEAT | · | 820 m | MPC · JPL |
| 550642 | 2012 RJ$_{45}$ | — | September 15, 2012 | ESA OGS | ESA OGS | · | 2.2 km | MPC · JPL |
| 550643 | 2012 RH$_{46}$ | — | September 15, 2012 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550644 | 2012 SG$_1$ | — | February 27, 2007 | Kitt Peak | Spacewatch | · | 940 m | MPC · JPL |
| 550645 | 2012 SJ$_5$ | — | March 18, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550646 | 2012 SK$_5$ | — | November 3, 2004 | Palomar | NEAT | · | 940 m | MPC · JPL |
| 550647 | 2012 SB$_8$ | — | October 9, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.3 km | MPC · JPL |
| 550648 | 2012 SF$_{20}$ | — | August 25, 2012 | Kitt Peak | Spacewatch | · | 2.4 km | MPC · JPL |
| 550649 | 2012 ST$_{20}$ | — | December 27, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 710 m | MPC · JPL |
| 550650 | 2012 SB$_{21}$ | — | January 1, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550651 | 2012 SE$_{23}$ | — | September 29, 2005 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550652 | 2012 SL$_{28}$ | — | July 29, 2005 | Palomar | NEAT | · | 900 m | MPC · JPL |
| 550653 | 2012 SJ$_{29}$ | — | May 24, 2011 | Nogales | M. Schwartz, P. R. Holvorcem | EOS | 2.0 km | MPC · JPL |
| 550654 | 2012 SV$_{31}$ | — | September 21, 2012 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550655 | 2012 SX$_{36}$ | — | March 2, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 850 m | MPC · JPL |
| 550656 | 2012 SE$_{41}$ | — | August 26, 2012 | Haleakala | Pan-STARRS | V | 620 m | MPC · JPL |
| 550657 | 2012 SL$_{42}$ | — | February 10, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 590 m | MPC · JPL |
| 550658 | 2012 SN$_{43}$ | — | September 20, 2001 | Socorro | LINEAR | · | 3.7 km | MPC · JPL |
| 550659 | 2012 ST$_{43}$ | — | September 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 900 m | MPC · JPL |
| 550660 | 2012 SX$_{44}$ | — | August 14, 2006 | Siding Spring | SSS | · | 4.6 km | MPC · JPL |
| 550661 | 2012 SS$_{47}$ | — | November 2, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550662 | 2012 SP$_{50}$ | — | September 18, 2012 | Mount Lemmon SkyCe | T. Vorobjov, A. Kostin | · | 780 m | MPC · JPL |
| 550663 | 2012 SM$_{51}$ | — | August 12, 2006 | Palomar | NEAT | · | 3.7 km | MPC · JPL |
| 550664 | 2012 SK$_{53}$ | — | August 5, 2005 | Palomar | NEAT | · | 940 m | MPC · JPL |
| 550665 | 2012 SF$_{55}$ | — | September 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.1 km | MPC · JPL |
| 550666 Difrancesco | 2012 SJ$_{55}$ | Difrancesco | October 23, 2006 | Mauna Kea | D. D. Balam | · | 2.8 km | MPC · JPL |
| 550667 | 2012 SV$_{61}$ | — | August 26, 2012 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550668 | 2012 SD$_{64}$ | — | June 5, 2002 | Palomar | NEAT | · | 780 m | MPC · JPL |
| 550669 | 2012 SE$_{64}$ | — | July 21, 2006 | Lulin | LUSS | EOS | 2.9 km | MPC · JPL |
| 550670 | 2012 SE$_{65}$ | — | September 26, 2012 | Nogales | M. Schwartz, P. R. Holvorcem | EUN | 1.6 km | MPC · JPL |
| 550671 | 2012 SZ$_{66}$ | — | October 9, 2008 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550672 | 2012 SQ$_{69}$ | — | November 1, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.1 km | MPC · JPL |
| 550673 | 2012 SN$_{71}$ | — | February 11, 2004 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550674 | 2012 SW$_{71}$ | — | October 15, 1995 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550675 | 2012 SB$_{72}$ | — | September 23, 2012 | Kitt Peak | Spacewatch | · | 3.2 km | MPC · JPL |
| 550676 | 2012 SG$_{72}$ | — | August 24, 2012 | Kitt Peak | Spacewatch | · | 590 m | MPC · JPL |
| 550677 | 2012 SV$_{72}$ | — | September 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550678 | 2012 SW$_{73}$ | — | September 23, 2012 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550679 | 2012 SQ$_{74}$ | — | September 16, 2012 | ESA OGS | ESA OGS | · | 980 m | MPC · JPL |
| 550680 | 2012 SH$_{79}$ | — | September 24, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550681 | 2012 SF$_{85}$ | — | August 24, 2017 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550682 | 2012 SQ$_{85}$ | — | September 24, 2012 | Kitt Peak | Spacewatch | · | 670 m | MPC · JPL |
| 550683 | 2012 SV$_{86}$ | — | September 16, 2012 | ESA OGS | ESA OGS | · | 940 m | MPC · JPL |
| 550684 | 2012 SB$_{88}$ | — | September 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550685 | 2012 SJ$_{88}$ | — | September 20, 2012 | Mount Lemmon | Mount Lemmon Survey | H | 650 m | MPC · JPL |
| 550686 | 2012 SS$_{88}$ | — | September 24, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.1 km | MPC · JPL |
| 550687 | 2012 TY | — | October 25, 2005 | Mount Lemmon | Mount Lemmon Survey | NYS | 760 m | MPC · JPL |
| 550688 | 2012 TU$_1$ | — | September 14, 2012 | Catalina | CSS | · | 3.1 km | MPC · JPL |
| 550689 | 2012 TD$_2$ | — | July 30, 2005 | Palomar | NEAT | · | 940 m | MPC · JPL |
| 550690 | 2012 TS$_2$ | — | September 19, 2012 | Mount Lemmon | Mount Lemmon Survey | H | 490 m | MPC · JPL |
| 550691 | 2012 TD$_3$ | — | August 13, 2001 | Haleakala | AMOS | · | 1.1 km | MPC · JPL |
| 550692 | 2012 TM$_3$ | — | November 12, 2001 | Apache Point | SDSS | URS | 3.4 km | MPC · JPL |
| 550693 | 2012 TJ$_4$ | — | October 5, 2012 | Haleakala | Pan-STARRS | H | 860 m | MPC · JPL |
| 550694 | 2012 TT$_6$ | — | March 23, 2001 | Haleakala | AMOS | · | 880 m | MPC · JPL |
| 550695 | 2012 TV$_6$ | — | March 17, 2004 | Kitt Peak | Spacewatch | VER | 2.8 km | MPC · JPL |
| 550696 | 2012 TL$_7$ | — | October 10, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550697 | 2012 TO$_7$ | — | October 15, 2001 | Apache Point | SDSS | EOS | 2.6 km | MPC · JPL |
| 550698 | 2012 TW$_8$ | — | November 20, 2001 | Socorro | LINEAR | EOS | 2.2 km | MPC · JPL |
| 550699 | 2012 TN$_9$ | — | September 24, 2012 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550700 | 2012 TB$_{10}$ | — | August 17, 2006 | Palomar | NEAT | · | 3.4 km | MPC · JPL |

## 550701–550800

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550701 | 2012 TD$_{12}$ | — | March 16, 2004 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550702 | 2012 TS$_{12}$ | — | September 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 570 m | MPC · JPL |
| 550703 | 2012 TW$_{14}$ | — | May 7, 2002 | Palomar | NEAT | · | 740 m | MPC · JPL |
| 550704 | 2012 TN$_{16}$ | — | September 18, 2012 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550705 | 2012 TW$_{16}$ | — | December 4, 2005 | Kitt Peak | Spacewatch | MAS | 750 m | MPC · JPL |
| 550706 | 2012 TA$_{17}$ | — | April 14, 2010 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550707 | 2012 TF$_{19}$ | — | September 14, 2012 | Kitt Peak | Spacewatch | · | 620 m | MPC · JPL |
| 550708 | 2012 TT$_{19}$ | — | April 14, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 3.7 km | MPC · JPL |
| 550709 | 2012 TD$_{20}$ | — | October 7, 2012 | Haleakala | Pan-STARRS | H | 820 m | MPC · JPL |
| 550710 | 2012 TW$_{20}$ | — | September 22, 2012 | Kitt Peak | Spacewatch | critical | 490 m | MPC · JPL |
| 550711 | 2012 TM$_{21}$ | — | September 26, 2006 | Kitt Peak | Spacewatch | · | 3.7 km | MPC · JPL |
| 550712 | 2012 TD$_{22}$ | — | October 6, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.5 km | MPC · JPL |
| 550713 | 2012 TY$_{23}$ | — | October 4, 2002 | Palomar | NEAT | · | 980 m | MPC · JPL |
| 550714 | 2012 TG$_{24}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550715 | 2012 TW$_{30}$ | — | February 25, 2007 | Kitt Peak | Spacewatch | · | 860 m | MPC · JPL |
| 550716 | 2012 TL$_{31}$ | — | August 26, 2012 | Haleakala | Pan-STARRS | · | 3.2 km | MPC · JPL |
| 550717 | 2012 TA$_{34}$ | — | October 18, 2007 | Kitt Peak | Spacewatch | · | 3.2 km | MPC · JPL |
| 550718 | 2012 TP$_{36}$ | — | September 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550719 | 2012 TD$_{44}$ | — | May 24, 2011 | Haleakala | Pan-STARRS | V | 680 m | MPC · JPL |
| 550720 | 2012 TM$_{44}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550721 | 2012 TK$_{46}$ | — | January 6, 2010 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550722 | 2012 TF$_{49}$ | — | October 8, 2012 | Haleakala | Pan-STARRS | · | 680 m | MPC · JPL |
| 550723 | 2012 TE$_{50}$ | — | February 24, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550724 | 2012 TV$_{59}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550725 | 2012 TP$_{61}$ | — | November 20, 2007 | Kitt Peak | Spacewatch | · | 3.7 km | MPC · JPL |
| 550726 | 2012 TW$_{61}$ | — | November 2, 2007 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550727 | 2012 TJ$_{65}$ | — | February 12, 2004 | Kitt Peak | Spacewatch | · | 830 m | MPC · JPL |
| 550728 | 2012 TY$_{68}$ | — | October 27, 2005 | Kitt Peak | Spacewatch | 7:4 | 4.6 km | MPC · JPL |
| 550729 | 2012 TG$_{69}$ | — | November 13, 2001 | Uppsala-Kvistaberg | Kvistaberg Obs. | · | 3.1 km | MPC · JPL |
| 550730 | 2012 TS$_{72}$ | — | October 9, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 780 m | MPC · JPL |
| 550731 | 2012 TV$_{72}$ | — | July 6, 2005 | Siding Spring | SSS | · | 900 m | MPC · JPL |
| 550732 | 2012 TK$_{73}$ | — | May 10, 2005 | Cerro Tololo | M. W. Buie, L. H. Wasserman | (1298) | 3.1 km | MPC · JPL |
| 550733 | 2012 TK$_{77}$ | — | May 6, 2006 | Mount Lemmon | Mount Lemmon Survey | HNS | 1.3 km | MPC · JPL |
| 550734 | 2012 TM$_{80}$ | — | October 5, 2002 | Palomar | NEAT | · | 820 m | MPC · JPL |
| 550735 | 2012 TO$_{85}$ | — | October 6, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550736 | 2012 TH$_{86}$ | — | September 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.9 km | MPC · JPL |
| 550737 | 2012 TR$_{86}$ | — | November 12, 2001 | Apache Point | SDSS Collaboration | · | 3.2 km | MPC · JPL |
| 550738 | 2012 TZ$_{87}$ | — | October 6, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.3 km | MPC · JPL |
| 550739 | 2012 TH$_{90}$ | — | April 29, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 590 m | MPC · JPL |
| 550740 | 2012 TD$_{91}$ | — | August 4, 2005 | Palomar | NEAT | · | 750 m | MPC · JPL |
| 550741 | 2012 TW$_{91}$ | — | October 7, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550742 | 2012 TP$_{94}$ | — | October 8, 2012 | Mayhill-ISON | L. Elenin | · | 1.2 km | MPC · JPL |
| 550743 | 2012 TR$_{94}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550744 | 2012 TB$_{95}$ | — | May 8, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 940 m | MPC · JPL |
| 550745 | 2012 TF$_{95}$ | — | August 20, 2008 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550746 | 2012 TJ$_{96}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550747 | 2012 TH$_{97}$ | — | October 8, 2012 | Kitt Peak | Spacewatch | · | 650 m | MPC · JPL |
| 550748 | 2012 TJ$_{100}$ | — | September 17, 2012 | Crni Vrh | B. Mikuž | BRG | 1.5 km | MPC · JPL |
| 550749 | 2012 TX$_{100}$ | — | August 28, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 780 m | MPC · JPL |
| 550750 | 2012 TM$_{101}$ | — | September 28, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550751 | 2012 TQ$_{104}$ | — | October 24, 2005 | Kitt Peak | Spacewatch | · | 650 m | MPC · JPL |
| 550752 | 2012 TD$_{105}$ | — | October 2, 1995 | Kitt Peak | Spacewatch | · | 620 m | MPC · JPL |
| 550753 | 2012 TL$_{106}$ | — | October 9, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.4 km | MPC · JPL |
| 550754 | 2012 TG$_{107}$ | — | July 28, 2003 | Haleakala | AMOS | EUN | 1.7 km | MPC · JPL |
| 550755 | 2012 TT$_{108}$ | — | April 2, 2011 | Mount Lemmon | Mount Lemmon Survey | V | 590 m | MPC · JPL |
| 550756 | 2012 TE$_{110}$ | — | September 21, 2012 | Kitt Peak | Spacewatch | · | 570 m | MPC · JPL |
| 550757 | 2012 TM$_{117}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550758 | 2012 TS$_{119}$ | — | October 1, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 490 m | MPC · JPL |
| 550759 | 2012 TE$_{121}$ | — | October 8, 2002 | Uccle | T. Pauwels | · | 710 m | MPC · JPL |
| 550760 | 2012 TG$_{125}$ | — | September 14, 2012 | ESA OGS | ESA OGS | · | 2.7 km | MPC · JPL |
| 550761 | 2012 TT$_{125}$ | — | April 1, 2011 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |
| 550762 | 2012 TB$_{126}$ | — | October 23, 2005 | Catalina | CSS | · | 980 m | MPC · JPL |
| 550763 | 2012 TS$_{126}$ | — | August 24, 2006 | Palomar | NEAT | · | 3.4 km | MPC · JPL |
| 550764 | 2012 TX$_{126}$ | — | October 5, 2012 | Haleakala | Pan-STARRS | · | 3.9 km | MPC · JPL |
| 550765 | 2012 TD$_{128}$ | — | October 7, 2012 | Haleakala | Pan-STARRS | · | 3.7 km | MPC · JPL |
| 550766 | 2012 TD$_{131}$ | — | August 13, 2006 | Palomar | NEAT | TIR | 4.2 km | MPC · JPL |
| 550767 | 2012 TK$_{132}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | (5) | 560 m | MPC · JPL |
| 550768 | 2012 TD$_{133}$ | — | March 28, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550769 | 2012 TP$_{133}$ | — | October 5, 2012 | Haleakala | Pan-STARRS | · | 2.7 km | MPC · JPL |
| 550770 | 2012 TD$_{134}$ | — | October 21, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 800 m | MPC · JPL |
| 550771 | 2012 TN$_{134}$ | — | May 24, 2011 | Nogales | M. Schwartz, P. R. Holvorcem | · | 1.4 km | MPC · JPL |
| 550772 | 2012 TS$_{136}$ | — | May 17, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 3.4 km | MPC · JPL |
| 550773 | 2012 TV$_{137}$ | — | September 26, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 3.5 km | MPC · JPL |
| 550774 | 2012 TW$_{139}$ | — | August 13, 2006 | Palomar | NEAT | H | 910 m | MPC · JPL |
| 550775 | 2012 TJ$_{140}$ | — | March 10, 2011 | Mayhill-ISON | L. Elenin | H | 940 m | MPC · JPL |
| 550776 | 2012 TF$_{141}$ | — | April 10, 2005 | Kitt Peak | Kitt Peak Obs. | · | 2.5 km | MPC · JPL |
| 550777 | 2012 TP$_{141}$ | — | September 15, 2004 | Kitt Peak | Spacewatch | H | 750 m | MPC · JPL |
| 550778 | 2012 TV$_{141}$ | — | August 25, 2006 | Lulin | LUSS | · | 2.9 km | MPC · JPL |
| 550779 | 2012 TS$_{145}$ | — | October 11, 2012 | Haleakala | Pan-STARRS | · | 780 m | MPC · JPL |
| 550780 | 2012 TL$_{150}$ | — | September 3, 2008 | Kitt Peak | Spacewatch | · | 940 m | MPC · JPL |
| 550781 | 2012 TE$_{152}$ | — | March 15, 2002 | Mount Hamilton | Lick Obs. | · | 1.6 km | MPC · JPL |
| 550782 | 2012 TF$_{153}$ | — | September 11, 2001 | Kitt Peak | Spacewatch | THM | 2.9 km | MPC · JPL |
| 550783 | 2012 TC$_{156}$ | — | September 15, 2012 | ESA OGS | ESA OGS | · | 2.7 km | MPC · JPL |
| 550784 | 2012 TH$_{163}$ | — | April 8, 2008 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550785 | 2012 TT$_{163}$ | — | October 8, 2012 | Haleakala | Pan-STARRS | (5) | 700 m | MPC · JPL |
| 550786 | 2012 TV$_{165}$ | — | March 12, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 3.1 km | MPC · JPL |
| 550787 | 2012 TV$_{167}$ | — | November 2, 2007 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550788 | 2012 TC$_{168}$ | — | August 10, 2001 | Palomar | NEAT | · | 2.8 km | MPC · JPL |
| 550789 | 2012 TL$_{175}$ | — | September 14, 2005 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550790 | 2012 TL$_{177}$ | — | August 18, 2006 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550791 | 2012 TS$_{178}$ | — | December 10, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550792 | 2012 TC$_{179}$ | — | October 9, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550793 | 2012 TD$_{179}$ | — | March 15, 2004 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |
| 550794 | 2012 TF$_{179}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550795 | 2012 TK$_{179}$ | — | November 3, 2007 | Kitt Peak | Spacewatch | · | 3.4 km | MPC · JPL |
| 550796 | 2012 TD$_{185}$ | — | March 11, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 780 m | MPC · JPL |
| 550797 | 2012 TG$_{185}$ | — | September 24, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550798 | 2012 TE$_{186}$ | — | October 9, 2012 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550799 | 2012 TW$_{186}$ | — | October 9, 2012 | Mount Lemmon | Mount Lemmon Survey | 7:4 | 3.7 km | MPC · JPL |
| 550800 | 2012 TO$_{187}$ | — | October 9, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 710 m | MPC · JPL |

## 550801–550900

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550801 | 2012 TG$_{189}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 860 m | MPC · JPL |
| 550802 | 2012 TQ$_{191}$ | — | October 10, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.5 km | MPC · JPL |
| 550803 | 2012 TA$_{192}$ | — | September 24, 1995 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550804 | 2012 TU$_{192}$ | — | December 4, 2005 | Kitt Peak | Spacewatch | · | 1.0 km | MPC · JPL |
| 550805 | 2012 TZ$_{194}$ | — | September 26, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550806 | 2012 TS$_{195}$ | — | September 18, 2006 | Goodricke-Pigott | R. A. Tucker | · | 4.6 km | MPC · JPL |
| 550807 | 2012 TX$_{196}$ | — | October 13, 1999 | Apache Point | SDSS | · | 1.6 km | MPC · JPL |
| 550808 | 2012 TC$_{197}$ | — | October 10, 2012 | Kitt Peak | Spacewatch | · | 1.4 km | MPC · JPL |
| 550809 | 2012 TU$_{197}$ | — | October 10, 2012 | Haleakala | Pan-STARRS | · | 710 m | MPC · JPL |
| 550810 | 2012 TC$_{199}$ | — | November 30, 2005 | Kitt Peak | Spacewatch | NYS | 520 m | MPC · JPL |
| 550811 | 2012 TM$_{201}$ | — | October 1, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550812 | 2012 TR$_{202}$ | — | November 4, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550813 | 2012 TX$_{206}$ | — | March 18, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 3.2 km | MPC · JPL |
| 550814 | 2012 TD$_{208}$ | — | September 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 650 m | MPC · JPL |
| 550815 | 2012 TQ$_{209}$ | — | October 11, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.5 km | MPC · JPL |
| 550816 | 2012 TJ$_{210}$ | — | August 31, 2011 | Haleakala | Pan-STARRS | L5 | 7.3 km | MPC · JPL |
| 550817 | 2012 TS$_{211}$ | — | September 17, 2012 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550818 | 2012 TS$_{213}$ | — | August 27, 2005 | Anderson Mesa | LONEOS | · | 940 m | MPC · JPL |
| 550819 | 2012 TS$_{215}$ | — | October 13, 2012 | Les Engarouines | L. Bernasconi | · | 1.6 km | MPC · JPL |
| 550820 | 2012 TX$_{216}$ | — | April 2, 2005 | Kitt Peak | Spacewatch | · | 3.7 km | MPC · JPL |
| 550821 | 2012 TQ$_{219}$ | — | September 18, 2012 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550822 | 2012 TD$_{220}$ | — | September 18, 2012 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550823 | 2012 TA$_{222}$ | — | October 14, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.7 km | MPC · JPL |
| 550824 | 2012 TB$_{222}$ | — | November 9, 2004 | Mauna Kea | Mauna Kea Obs. | · | 570 m | MPC · JPL |
| 550825 | 2012 TO$_{226}$ | — | December 27, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 680 m | MPC · JPL |
| 550826 | 2012 TU$_{230}$ | — | February 13, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550827 | 2012 TW$_{232}$ | — | October 14, 2001 | Palomar | NEAT | · | 4.3 km | MPC · JPL |
| 550828 | 2012 TA$_{233}$ | — | January 31, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 3.7 km | MPC · JPL |
| 550829 | 2012 TQ$_{233}$ | — | March 14, 2004 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550830 | 2012 TV$_{233}$ | — | August 14, 2001 | Powell | K. Smalley | · | 2.9 km | MPC · JPL |
| 550831 | 2012 TV$_{234}$ | — | October 7, 2012 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550832 Silvanacopceski | 2012 TZ$_{235}$ | Silvanacopceski | July 7, 2007 | Charleston | R. Holmes | · | 1.2 km | MPC · JPL |
| 550833 | 2012 TK$_{236}$ | — | October 16, 2001 | Palomar | NEAT | · | 3.4 km | MPC · JPL |
| 550834 | 2012 TS$_{237}$ | — | September 20, 2001 | Socorro | LINEAR | · | 3.5 km | MPC · JPL |
| 550835 | 2012 TY$_{237}$ | — | October 14, 2001 | Apache Point | SDSS Collaboration | · | 3.4 km | MPC · JPL |
| 550836 | 2012 TA$_{241}$ | — | August 28, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 900 m | MPC · JPL |
| 550837 | 2012 TP$_{243}$ | — | September 23, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550838 | 2012 TW$_{244}$ | — | September 17, 2012 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550839 | 2012 TL$_{245}$ | — | September 21, 2012 | Catalina | CSS | · | 750 m | MPC · JPL |
| 550840 | 2012 TB$_{254}$ | — | October 11, 2012 | Piszkesteto | K. Sárneczky | EOS | 1.8 km | MPC · JPL |
| 550841 | 2012 TQ$_{258}$ | — | October 15, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 710 m | MPC · JPL |
| 550842 | 2012 TT$_{260}$ | — | September 23, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 680 m | MPC · JPL |
| 550843 | 2012 TV$_{267}$ | — | September 15, 2006 | Kitt Peak | Spacewatch | · | 3.0 km | MPC · JPL |
| 550844 | 2012 TD$_{268}$ | — | October 9, 2012 | Haleakala | Pan-STARRS | H | 540 m | MPC · JPL |
| 550845 | 2012 TT$_{273}$ | — | November 7, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 920 m | MPC · JPL |
| 550846 | 2012 TW$_{274}$ | — | October 10, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550847 | 2012 TW$_{276}$ | — | October 11, 2012 | Haleakala | Pan-STARRS | V | 680 m | MPC · JPL |
| 550848 | 2012 TN$_{279}$ | — | March 28, 2011 | Kitt Peak | Spacewatch | H | 430 m | MPC · JPL |
| 550849 | 2012 TL$_{281}$ | — | October 11, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550850 | 2012 TM$_{281}$ | — | August 4, 2003 | Kitt Peak | Spacewatch | · | 2.2 km | MPC · JPL |
| 550851 | 2012 TO$_{282}$ | — | January 4, 2003 | Kitt Peak | I. dell'Antonio, D. Loomba | · | 3.5 km | MPC · JPL |
| 550852 | 2012 TS$_{289}$ | — | September 21, 2003 | Palomar | NEAT | · | 1.8 km | MPC · JPL |
| 550853 | 2012 TN$_{290}$ | — | January 28, 2000 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550854 | 2012 TQ$_{291}$ | — | October 1, 2005 | Catalina | CSS | · | 820 m | MPC · JPL |
| 550855 | 2012 TC$_{294}$ | — | October 14, 2012 | Kitt Peak | Spacewatch | · | 2.9 km | MPC · JPL |
| 550856 | 2012 TH$_{296}$ | — | September 30, 2005 | Palomar | NEAT | · | 960 m | MPC · JPL |
| 550857 | 2012 TM$_{296}$ | — | September 12, 2001 | Kitt Peak | Spacewatch | · | 900 m | MPC · JPL |
| 550858 | 2012 TS$_{296}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550859 | 2012 TZ$_{296}$ | — | April 13, 2004 | Palomar | NEAT | · | 3.9 km | MPC · JPL |
| 550860 | 2012 TM$_{297}$ | — | October 6, 2012 | Kitt Peak | Spacewatch | · | 1.2 km | MPC · JPL |
| 550861 | 2012 TZ$_{298}$ | — | November 1, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 680 m | MPC · JPL |
| 550862 | 2012 TD$_{301}$ | — | October 10, 2001 | Palomar | NEAT | · | 1.1 km | MPC · JPL |
| 550863 | 2012 TH$_{301}$ | — | August 6, 2005 | Palomar | NEAT | · | 780 m | MPC · JPL |
| 550864 | 2012 TK$_{302}$ | — | September 19, 2001 | Kitt Peak | Spacewatch | · | 980 m | MPC · JPL |
| 550865 | 2012 TX$_{302}$ | — | September 23, 2012 | Mayhill-ISON | L. Elenin | · | 2.9 km | MPC · JPL |
| 550866 | 2012 TD$_{304}$ | — | September 23, 2006 | San Marcello | Pistoia Mountains Obs. | VER | 3.2 km | MPC · JPL |
| 550867 | 2012 TZ$_{305}$ | — | September 15, 2012 | Kitt Peak | Spacewatch | · | 650 m | MPC · JPL |
| 550868 | 2012 TP$_{307}$ | — | October 10, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550869 | 2012 TR$_{307}$ | — | September 17, 2012 | Kitt Peak | Spacewatch | H | 620 m | MPC · JPL |
| 550870 | 2012 TZ$_{308}$ | — | December 8, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550871 | 2012 TO$_{309}$ | — | August 17, 2006 | Palomar | NEAT | · | 3.4 km | MPC · JPL |
| 550872 | 2012 TZ$_{309}$ | — | September 30, 2006 | Catalina | CSS | · | 4.2 km | MPC · JPL |
| 550873 | 2012 TJ$_{310}$ | — | September 19, 1998 | Apache Point | SDSS Collaboration | · | 1.0 km | MPC · JPL |
| 550874 | 2012 TJ$_{311}$ | — | October 19, 2001 | Anderson Mesa | LONEOS | · | 1.0 km | MPC · JPL |
| 550875 | 2012 TE$_{312}$ | — | September 19, 2006 | Catalina | CSS | · | 3.7 km | MPC · JPL |
| 550876 | 2012 TH$_{312}$ | — | March 11, 2007 | Kitt Peak | Spacewatch | · | 1.0 km | MPC · JPL |
| 550877 | 2012 TU$_{313}$ | — | October 22, 2001 | Palomar | NEAT | TIR | 3.8 km | MPC · JPL |
| 550878 | 2012 TS$_{314}$ | — | October 20, 2003 | Palomar | NEAT | · | 2.9 km | MPC · JPL |
| 550879 | 2012 TO$_{318}$ | — | July 28, 2005 | Palomar | NEAT | · | 820 m | MPC · JPL |
| 550880 | 2012 TY$_{318}$ | — | September 17, 2012 | Nogales | M. Schwartz, P. R. Holvorcem | · | 900 m | MPC · JPL |
| 550881 | 2012 TV$_{320}$ | — | October 13, 2012 | Catalina | CSS | H | 630 m | MPC · JPL |
| 550882 | 2012 TA$_{321}$ | — | September 13, 2012 | ASC-Kislovodsk | ASC-Kislovodsk | EUN | 1.1 km | MPC · JPL |
| 550883 | 2012 TG$_{321}$ | — | October 15, 2012 | Catalina | CSS | · | 1.6 km | MPC · JPL |
| 550884 | 2012 TB$_{323}$ | — | October 9, 2012 | Haleakala | Pan-STARRS | · | 2.5 km | MPC · JPL |
| 550885 | 2012 TJ$_{327}$ | — | October 8, 2012 | Haleakala | Pan-STARRS | · | 3.2 km | MPC · JPL |
| 550886 | 2012 TS$_{327}$ | — | August 4, 2003 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550887 | 2012 TV$_{329}$ | — | September 5, 2000 | Apache Point | SDSS Collaboration | · | 2.5 km | MPC · JPL |
| 550888 | 2012 TV$_{330}$ | — | October 11, 2012 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550889 | 2012 TX$_{330}$ | — | December 1, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550890 | 2012 TZ$_{331}$ | — | October 6, 2012 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 550891 | 2012 TT$_{338}$ | — | October 4, 2016 | Mount Lemmon | Mount Lemmon Survey | · | 790 m | MPC · JPL |
| 550892 | 2012 TJ$_{343}$ | — | October 26, 2013 | Mount Lemmon | Mount Lemmon Survey | 7:4 | 3.9 km | MPC · JPL |
| 550893 | 2012 TX$_{343}$ | — | December 21, 2014 | Mount Lemmon | Mount Lemmon Survey | · | 3.3 km | MPC · JPL |
| 550894 | 2012 TO$_{350}$ | — | January 1, 2014 | Kitt Peak | Spacewatch | · | 760 m | MPC · JPL |
| 550895 | 2012 TR$_{358}$ | — | October 8, 2012 | Kitt Peak | Spacewatch | · | 620 m | MPC · JPL |
| 550896 | 2012 TV$_{365}$ | — | October 5, 2012 | Haleakala | Pan-STARRS | · | 2.8 km | MPC · JPL |
| 550897 | 2012 UZ$_1$ | — | September 18, 2012 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550898 | 2012 UO$_2$ | — | November 5, 2005 | Catalina | CSS | V | 740 m | MPC · JPL |
| 550899 | 2012 UG$_4$ | — | July 29, 2005 | Palomar | NEAT | · | 900 m | MPC · JPL |
| 550900 | 2012 US$_4$ | — | October 7, 2012 | Haleakala | Pan-STARRS | · | 540 m | MPC · JPL |

## 550901–551000

| Designation | Designation | Designation | Discovery | Discovery | Discovery | Properties | Properties | Ref |
| Permanent | Provisional | Citation | Date | Site | Discoverer(s) | Category | Diam. | Ref |
| 550901 | 2012 UC$_6$ | — | April 6, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 590 m | MPC · JPL |
| 550902 | 2012 UG$_6$ | — | October 24, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 4.2 km | MPC · JPL |
| 550903 | 2012 UN$_7$ | — | October 16, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.6 km | MPC · JPL |
| 550904 | 2012 UV$_7$ | — | August 24, 2005 | Palomar | NEAT | · | 660 m | MPC · JPL |
| 550905 | 2012 US$_{12}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 730 m | MPC · JPL |
| 550906 | 2012 UP$_{14}$ | — | October 8, 2012 | Haleakala | Pan-STARRS | (2076) | 820 m | MPC · JPL |
| 550907 | 2012 UP$_{19}$ | — | October 8, 2012 | Haleakala | Pan-STARRS | · | 680 m | MPC · JPL |
| 550908 | 2012 UQ$_{20}$ | — | October 27, 2008 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550909 | 2012 UG$_{23}$ | — | October 17, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.6 km | MPC · JPL |
| 550910 | 2012 UP$_{23}$ | — | October 17, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550911 | 2012 UV$_{23}$ | — | November 17, 2007 | Kitt Peak | Spacewatch | · | 3.1 km | MPC · JPL |
| 550912 | 2012 UK$_{25}$ | — | October 8, 2012 | Catalina | CSS | · | 680 m | MPC · JPL |
| 550913 | 2012 UJ$_{26}$ | — | October 17, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.8 km | MPC · JPL |
| 550914 | 2012 UO$_{26}$ | — | September 21, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 680 m | MPC · JPL |
| 550915 | 2012 UH$_{27}$ | — | October 10, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 980 m | MPC · JPL |
| 550916 | 2012 UN$_{34}$ | — | October 20, 2012 | Mount Lemmon | Mount Lemmon Survey | L4 | 13 km | MPC · JPL |
| 550917 | 2012 UU$_{34}$ | — | July 18, 2001 | Palomar | NEAT | · | 940 m | MPC · JPL |
| 550918 | 2012 UJ$_{35}$ | — | October 3, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 3.2 km | MPC · JPL |
| 550919 | 2012 UC$_{40}$ | — | November 19, 2007 | Kitt Peak | Spacewatch | THM | 2.2 km | MPC · JPL |
| 550920 | 2012 UD$_{40}$ | — | March 9, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 620 m | MPC · JPL |
| 550921 | 2012 UQ$_{40}$ | — | September 25, 2001 | Bohyunsan | Bohyunsan Obs. | · | 860 m | MPC · JPL |
| 550922 | 2012 UH$_{44}$ | — | October 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.4 km | MPC · JPL |
| 550923 | 2012 UP$_{44}$ | — | October 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 4.0 km | MPC · JPL |
| 550924 | 2012 UO$_{47}$ | — | April 10, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 3.2 km | MPC · JPL |
| 550925 | 2012 UB$_{50}$ | — | May 14, 2009 | Mount Lemmon | Mount Lemmon Survey | · | 4.0 km | MPC · JPL |
| 550926 | 2012 UC$_{50}$ | — | March 15, 2011 | Mount Lemmon | Mount Lemmon Survey | H | 680 m | MPC · JPL |
| 550927 | 2012 UL$_{50}$ | — | November 3, 2005 | Catalina | CSS | · | 900 m | MPC · JPL |
| 550928 | 2012 UY$_{52}$ | — | September 28, 2006 | Catalina | CSS | · | 4.4 km | MPC · JPL |
| 550929 | 2012 UC$_{53}$ | — | October 30, 2007 | Mount Lemmon | Mount Lemmon Survey | H | 470 m | MPC · JPL |
| 550930 | 2012 UT$_{54}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | · | 3.4 km | MPC · JPL |
| 550931 | 2012 UH$_{55}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | · | 1.3 km | MPC · JPL |
| 550932 | 2012 UR$_{55}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | · | 680 m | MPC · JPL |
| 550933 | 2012 UW$_{55}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | · | 780 m | MPC · JPL |
| 550934 | 2012 UK$_{57}$ | — | July 28, 2011 | Palomar | Palomar Transient Factory | · | 2.5 km | MPC · JPL |
| 550935 | 2012 UE$_{58}$ | — | November 20, 2008 | Kitt Peak | Spacewatch | · | 710 m | MPC · JPL |
| 550936 | 2012 UR$_{58}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | V | 590 m | MPC · JPL |
| 550937 | 2012 UK$_{61}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | H | 520 m | MPC · JPL |
| 550938 | 2012 UO$_{61}$ | — | October 20, 2012 | Haleakala | Pan-STARRS | H | 520 m | MPC · JPL |
| 550939 | 2012 UC$_{62}$ | — | September 23, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.0 km | MPC · JPL |
| 550940 | 2012 UM$_{62}$ | — | December 1, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550941 | 2012 UQ$_{62}$ | — | November 19, 2006 | Kitt Peak | Spacewatch | 7:4 | 3.9 km | MPC · JPL |
| 550942 Kurtág | 2012 UN$_{67}$ | Kurtág | October 20, 2012 | Piszkesteto | A. Király | · | 3.4 km | MPC · JPL |
| 550943 | 2012 UA$_{68}$ | — | October 11, 2012 | Haleakala | Pan-STARRS | H | 650 m | MPC · JPL |
| 550944 | 2012 US$_{70}$ | — | September 3, 2002 | Palomar | NEAT | · | 900 m | MPC · JPL |
| 550945 | 2012 UJ$_{71}$ | — | March 18, 2010 | Kitt Peak | Spacewatch | · | 2.5 km | MPC · JPL |
| 550946 | 2012 UL$_{72}$ | — | March 5, 2006 | Kitt Peak | Spacewatch | · | 1.3 km | MPC · JPL |
| 550947 | 2012 UW$_{72}$ | — | October 17, 2012 | Haleakala | Pan-STARRS | · | 960 m | MPC · JPL |
| 550948 | 2012 UD$_{74}$ | — | October 23, 2008 | Kitt Peak | Spacewatch | · | 1.1 km | MPC · JPL |
| 550949 | 2012 UW$_{75}$ | — | October 8, 2012 | Mount Lemmon | Mount Lemmon Survey | MAS | 590 m | MPC · JPL |
| 550950 | 2012 UT$_{76}$ | — | January 5, 2006 | Kitt Peak | Spacewatch | MAS | 540 m | MPC · JPL |
| 550951 | 2012 UW$_{77}$ | — | August 21, 2001 | Palomar | NEAT | · | 4.0 km | MPC · JPL |
| 550952 | 2012 UG$_{80}$ | — | October 10, 2012 | Kitt Peak | Spacewatch | · | 1.7 km | MPC · JPL |
| 550953 | 2012 UG$_{84}$ | — | April 10, 2010 | Kitt Peak | Spacewatch | · | 3.9 km | MPC · JPL |
| 550954 | 2012 UU$_{90}$ | — | May 4, 2005 | Mauna Kea | Mauna Kea Obs. | THM | 2.0 km | MPC · JPL |
| 550955 | 2012 UL$_{92}$ | — | August 22, 2003 | Palomar | NEAT | · | 1.5 km | MPC · JPL |
| 550956 | 2012 UK$_{93}$ | — | November 2, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 940 m | MPC · JPL |
| 550957 | 2012 UM$_{93}$ | — | November 19, 2009 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550958 | 2012 UP$_{95}$ | — | October 30, 2008 | Kitt Peak | Spacewatch | · | 540 m | MPC · JPL |
| 550959 | 2012 UF$_{100}$ | — | November 3, 2008 | Kitt Peak | Spacewatch | · | 750 m | MPC · JPL |
| 550960 | 2012 UU$_{100}$ | — | November 6, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550961 | 2012 UP$_{104}$ | — | May 24, 2011 | Haleakala | Pan-STARRS | · | 1.1 km | MPC · JPL |
| 550962 | 2012 UC$_{105}$ | — | January 10, 2003 | Palomar | NEAT | · | 3.7 km | MPC · JPL |
| 550963 | 2012 UX$_{113}$ | — | October 22, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 2.2 km | MPC · JPL |
| 550964 | 2012 UZ$_{115}$ | — | September 17, 2012 | Kitt Peak | Spacewatch | · | 820 m | MPC · JPL |
| 550965 | 2012 UT$_{117}$ | — | September 16, 2012 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550966 | 2012 UW$_{117}$ | — | December 1, 2007 | Bisei SG Center | K. Nishiyama, N. Hashimoto | · | 2.9 km | MPC · JPL |
| 550967 | 2012 UW$_{120}$ | — | April 9, 2003 | Palomar | NEAT | V | 780 m | MPC · JPL |
| 550968 | 2012 UU$_{122}$ | — | July 28, 2005 | Palomar | NEAT | · | 620 m | MPC · JPL |
| 550969 | 2012 UB$_{123}$ | — | September 29, 2005 | Mount Lemmon | Mount Lemmon Survey | · | 750 m | MPC · JPL |
| 550970 | 2012 UC$_{123}$ | — | January 30, 2006 | Kitt Peak | Spacewatch | · | 650 m | MPC · JPL |
| 550971 | 2012 US$_{123}$ | — | November 9, 2001 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550972 | 2012 UG$_{125}$ | — | April 7, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 1.0 km | MPC · JPL |
| 550973 | 2012 UU$_{125}$ | — | October 22, 2012 | Haleakala | Pan-STARRS | · | 1.4 km | MPC · JPL |
| 550974 | 2012 UN$_{128}$ | — | October 18, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 3.7 km | MPC · JPL |
| 550975 | 2012 UG$_{134}$ | — | September 26, 2012 | Nogales | M. Schwartz, P. R. Holvorcem | · | 1.0 km | MPC · JPL |
| 550976 | 2012 UP$_{134}$ | — | October 19, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.5 km | MPC · JPL |
| 550977 | 2012 UT$_{134}$ | — | October 19, 2012 | Haleakala | Pan-STARRS | H | 620 m | MPC · JPL |
| 550978 | 2012 UU$_{134}$ | — | October 6, 2012 | Haleakala | Pan-STARRS | · | 3.1 km | MPC · JPL |
| 550979 | 2012 UU$_{135}$ | — | October 6, 2012 | Haleakala | Pan-STARRS | 7:4 | 4.6 km | MPC · JPL |
| 550980 | 2012 UU$_{137}$ | — | October 23, 2012 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550981 | 2012 UW$_{137}$ | — | December 31, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 860 m | MPC · JPL |
| 550982 | 2012 UL$_{138}$ | — | October 14, 2012 | ASC-Kislovodsk | V. Nevski, O. Zeloyniy | H | 650 m | MPC · JPL |
| 550983 | 2012 UL$_{141}$ | — | March 25, 2010 | Kitt Peak | Spacewatch | · | 2.8 km | MPC · JPL |
| 550984 | 2012 UP$_{141}$ | — | April 13, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 780 m | MPC · JPL |
| 550985 | 2012 UN$_{142}$ | — | April 20, 2010 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550986 | 2012 UQ$_{142}$ | — | October 28, 2008 | Kitt Peak | Spacewatch | · | 670 m | MPC · JPL |
| 550987 | 2012 UR$_{142}$ | — | November 18, 2007 | Mount Lemmon | Mount Lemmon Survey | · | 2.4 km | MPC · JPL |
| 550988 | 2012 UA$_{146}$ | — | January 22, 2006 | Mount Lemmon | Mount Lemmon Survey | · | 1.8 km | MPC · JPL |
| 550989 | 2012 UK$_{147}$ | — | June 5, 2011 | Mount Lemmon | Mount Lemmon Survey | · | 1.7 km | MPC · JPL |
| 550990 | 2012 UK$_{148}$ | — | September 18, 2001 | Apache Point | SDSS Collaboration | · | 780 m | MPC · JPL |
| 550991 | 2012 UU$_{149}$ | — | August 28, 2012 | Mount Lemmon | Mount Lemmon Survey | · | 1.2 km | MPC · JPL |
| 550992 | 2012 UN$_{155}$ | — | April 1, 2003 | Kitt Peak | M. W. Buie, A. B. Jordan | · | 780 m | MPC · JPL |
| 550993 | 2012 UR$_{159}$ | — | March 11, 2003 | Palomar | NEAT | V | 890 m | MPC · JPL |
| 550994 | 2012 UQ$_{161}$ | — | September 28, 2006 | Kitt Peak | Spacewatch | · | 2.7 km | MPC · JPL |
| 550995 | 2012 UN$_{165}$ | — | October 5, 2000 | Kitt Peak | Spacewatch | (1118) | 4.0 km | MPC · JPL |
| 550996 | 2012 UH$_{167}$ | — | December 29, 2005 | Kitt Peak | Spacewatch | · | 780 m | MPC · JPL |
| 550997 | 2012 UO$_{168}$ | — | October 9, 2012 | Mayhill-ISON | L. Elenin | · | 1.1 km | MPC · JPL |
| 550998 | 2012 UY$_{168}$ | — | September 25, 2008 | Mount Lemmon | Mount Lemmon Survey | · | 1.1 km | MPC · JPL |
| 550999 | 2012 UA$_{169}$ | — | October 6, 2012 | Haleakala | Pan-STARRS | · | 1.0 km | MPC · JPL |
| 551000 | 2012 UQ$_{169}$ | — | May 29, 2003 | Cerro Tololo | M. W. Buie, K. J. Meech | TIR | 2.8 km | MPC · JPL |

## Meaning of names

As minor planet discoveries are confirmed, they are given a permanent number by the IAU's Minor Planet Center (MPC), and the discoverers can then submit names for them, following the IAU's naming conventions. The list below concerns those minor planets in the specified number-range that have received names, and explains the meanings of those names.
Official naming citations of newly named small Solar System bodies are approved and published in a bulletin by IAU's Working Group for Small Bodies Nomenclature (WGSBN). Before May 2021, citations were published in MPC's Minor Planet Circulars for many decades. Recent citations can also be found on the JPL Small-Body Database (SBDB). Until his death in 2016, German astronomer Lutz D. Schmadel compiled these citations into the Dictionary of Minor Planet Names (DMP) and regularly updated the collection.
Based on Paul Herget's The Names of the Minor Planets, Schmadel also researched the unclear origin of numerous asteroids, most of which had been named prior to World War II. This article incorporates text from this source, which is in the public domain: SBDB New namings may only be added to this list below after official publication as the preannouncement of names is condemned. The WGSBN publishes a comprehensive guideline for the naming rules of non-cometary small Solar System bodies.
| Named minor planet | Provisional | This minor planet was named for... | Ref · Catalog |
| 550083 Szécsényi-Nagy | 2011 YL$_{85}$ | Gábor Szécsényi-Nagy (1948–2012), a Hungarian astronomer, professor at Eötvös Loránd University. | IAU · 550083 |
| 550139 Venn | 2012 BF$_{53}$ | Kim Venn (born 1965), Canadian astronomer at the Department of Physics and Astronomy of the University of Victoria. | IAU · 550139 |
| 550525 Sigourneyweaver | 2012 NL | Sigourney Weaver (born 1949), an American actress who is best known for her lead role as "Ripley" in the Alien franchise. | IAU · 550525 |
| 550666 Difrancesco | 2012 SJ$_{55}$ | James DiFrancesco (born 1968), Canadian astrophysicist at the Herzberg Astronomy and Astrophysics Research Centre (National Research Council of Canada). | IAU · 550666 |
| 550832 Silvanacopceski | 2012 TZ$_{235}$ | Silvana Copceski (b. 1976), the coordinator of the asteroid search program in Brazil. | IAU · 550832 |
| 550942 Kurtág | 2012 UN$_{67}$ | György Kurtág (b. 1926), a Hungarian classical composer, pianist and teacher of chamber music. | IAU · 550942 |