# List of unnumbered minor planets: 2003 X–Y

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 1–31 December 2003. As of February 2022, a total of 425 bodies remain unnumbered for this period. Objects for this year are listed on the following pages: A–E · F–G · H–L · M–R · S$_i$ · S$_{ii}$ · S$_{iii}$ · S$_{iv}$ · T · U$_i$ · U$_{ii}$ · U$_{iii}$ · U$_{iv}$ · V · W$_i$ · W$_{ii}$ and X–Y. Also see previous and next year.
| Near-Earth obj. | MBA (inner) | MBA (outer) | Centaur |
| Mars-crosser | MBA (middle) | Jupiter trojan | Trans-Neptunian obj. |
| Unclassified | | | |

## X

| U | Designation | Class | Physical | Physical | Observations | Observations | Observations | Observations | Description and notes | Ref |
| U | Designation | Class | H | D | Opp. | Arc | Last | Used | Description and notes | Ref |
| 0 | 2003 XD | MBA-I | 17.46 | 960 m | multiple | 2003–2021 | 27 Mar 2021 | 116 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XH | MCA | 18.4 | 1.2 km | multiple | 2003–2018 | 11 Aug 2018 | 114 | Disc.: LINEAR | MPC · JPL |
| 8 | 2003 XK | APO | 25.9 | 23 m | single | 3 days | 04 Dec 2003 | 16 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XM | AMO | 19.28 | 490 m | multiple | 2003–2021 | 09 Jan 2021 | 149 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XV | APO | 26.7 | 16 m | multiple | 2003–2011 | 06 Dec 2011 | 74 | Disc.: Spacewatch | MPC · JPL |
| – | 2003 XW | MCA | 18.8 | 730 m | single | 29 days | 23 Dec 2003 | 32 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XK1 | MBA-O | 16.75 | 2.5 km | multiple | 2003–2022 | 06 Jan 2022 | 163 | Disc.: Spacewatch Alt.: 2010 ER159, 2014 PH30, 2014 QK411 | MPC · JPL |
| 1 | 2003 XN1 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2021 | 06 Jan 2021 | 80 | Disc.: Spacewatch Alt.: 2014 SQ247 | MPC · JPL |
| 0 | 2003 XO1 | MBA-M | 17.78 | 1.5 km | multiple | 2003–2021 | 08 Aug 2021 | 51 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XQ1 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 16 Jan 2021 | 54 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 1 | 2003 XG7 | MCA | 17.4 | 980 m | multiple | 2003–2019 | 07 Jan 2019 | 145 | Disc.: LINEAR Alt.: 2018 SH13 | MPC · JPL |
| 6 | 2003 XJ7 | APO | 26.4 | 19 m | single | 1 day | 06 Dec 2003 | 35 | Disc.: LINEAR | MPC · JPL |
| 6 | 2003 XH10 | APO | 25.5 | 28 m | single | 4 days | 08 Dec 2003 | 36 | Disc.: LINEAR | MPC · JPL |
| 6 | 2003 XZ12 | APO | 24.4 | 47 m | single | 10 days | 25 Dec 2003 | 30 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XB15 | MBA-I | 17.35 | 1.0 km | multiple | 2003–2021 | 06 Dec 2021 | 203 | Disc.: LINEAR Alt.: 2010 VB153, 2010 VE187 | MPC · JPL |
| 0 | 2003 XG15 | HUN | 18.33 | 640 m | multiple | 2003–2022 | 18 Jan 2022 | 100 | Disc.: LINEAR Alt.: 2016 VV7 | MPC · JPL |
| 0 | 2003 XT16 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 05 Jan 2021 | 65 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 XZ16 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2021 | 15 Jan 2021 | 154 | Disc.: NEAT Alt.: 2016 XB19 | MPC · JPL |
| 0 | 2003 XU17 | MBA-M | 18.5 | 840 m | multiple | 2000–2021 | 17 Jan 2021 | 38 | Disc.: Spacewatch Alt.: 2020 XE14 | MPC · JPL |
| 2 | 2003 XV18 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2019 | 19 Dec 2019 | 50 | Disc.: Spacewatch | MPC · JPL |
| 1 | 2003 XK21 | MCA | 16.4 | 3.4 km | multiple | 2003–2020 | 02 Feb 2020 | 155 | Disc.: Spacewatch Alt.: 2008 SS211 | MPC · JPL |
| 0 | 2003 XC22 | MCA | 17.0 | 1.7 km | multiple | 2003–2021 | 21 Jan 2021 | 125 | Disc.: LINEAR | MPC · JPL |
| 0 | 2003 XF23 | MBA-O | 16.50 | 2.8 km | multiple | 2003–2022 | 25 Jan 2022 | 124 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XU24 | MBA-O | 16.43 | 2.9 km | multiple | 2003–2021 | 13 Nov 2021 | 109 | Disc.: Spacewatch Added on 17 January 2021 Alt.: 2010 DZ89 | MPC · JPL |
| 0 | 2003 XQ27 | MBA-O | 16.1 | 3.4 km | multiple | 2002–2021 | 17 Jan 2021 | 221 | Disc.: LINEAR Alt.: 2012 KJ38 | MPC · JPL |
| 0 | 2003 XF28 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 12 Jan 2021 | 64 | Disc.: Spacewatch Alt.: 2016 CH245 | MPC · JPL |
| 0 | 2003 XG28 | MBA-O | 16.91 | 2.3 km | multiple | 2003–2021 | 01 May 2021 | 92 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XP28 | MBA-O | 16.62 | 2.6 km | multiple | 2003–2021 | 13 Apr 2021 | 66 | Disc.: Spacewatch | MPC · JPL |
| 2 | 2003 XQ28 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 23 Nov 2020 | 44 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 XW28 | MBA-O | 16.9 | 2.3 km | multiple | 2002–2021 | 04 Jan 2021 | 104 | Disc.: Spacewatch Alt.: 2013 TK148, 2014 WS131 | MPC · JPL |
| 0 | 2003 XL29 | MBA-I | 17.83 | 810 m | multiple | 2001–2021 | 08 May 2021 | 76 | Disc.: Spacewatch Alt.: 2014 OW8 | MPC · JPL |
| 0 | 2003 XY29 | MBA-I | 18.2 | 680 m | multiple | 2003–2021 | 16 Jan 2021 | 112 | Disc.: LPL/Spacewatch II Alt.: 2008 AW21, 2015 DN36 | MPC · JPL |
| 0 | 2003 XA30 | MBA-O | 16.2 | 3.2 km | multiple | 2003–2021 | 14 Jan 2021 | 95 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XC30 | MBA-O | 17.19 | 2.0 km | multiple | 2003–2021 | 10 Apr 2021 | 78 | Disc.: Spacewatch Alt.: 2008 VP96, 2015 BK284 | MPC · JPL |
| 1 | 2003 XD30 | MBA-M | 18.34 | 1.2 km | multiple | 2003–2022 | 07 Jan 2022 | 73 | Disc.: Spacewatch Alt.: 2012 WY17 | MPC · JPL |
| 0 | 2003 XK30 | MBA-I | 18.0 | 750 m | multiple | 2003–2021 | 08 May 2021 | 42 | Disc.: Spacewatch Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 XQ30 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 16 Dec 2020 | 63 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XR30 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2021 | 09 Jan 2021 | 105 | Disc.: Spacewatch Alt.: 2008 RT45, 2008 RX93 | MPC · JPL |
| 0 | 2003 XA31 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2021 | 06 Jan 2021 | 102 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XD32 | MBA-I | 18.57 | 570 m | multiple | 2003–2022 | 25 Jan 2022 | 116 | Disc.: Spacewatch Alt.: 2013 RM15 | MPC · JPL |
| 0 | 2003 XL32 | MBA-I | 18.75 | 530 m | multiple | 2003–2021 | 09 Nov 2021 | 70 | Disc.: LPL/Spacewatch II Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 XB34 | MBA-I | 18.7 | 540 m | multiple | 2003–2021 | 15 Jan 2021 | 29 | Disc.: Spacewatch Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 XM34 | MBA-I | 18.8 | 520 m | multiple | 2003–2020 | 14 Nov 2020 | 57 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 2 | 2003 XX39 | MBA-O | 17.7 | 1.6 km | multiple | 2003–2020 | 15 Oct 2020 | 61 | Disc.: LINEAR Added on 11 May 2021 Alt.: 2020 OE10 | MPC · JPL |
| 0 | 2003 XE40 | MBA-M | 17.5 | 1.3 km | multiple | 2003–2021 | 04 Jan 2021 | 76 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XP40 | MBA-M | 17.2 | 1.5 km | multiple | 2001–2021 | 08 Jan 2021 | 118 | Disc.: Spacewatch Alt.: 2007 TF146, 2014 JH6 | MPC · JPL |
| 0 | 2003 XY40 | MBA-O | 17.35 | 1.9 km | multiple | 2003–2021 | 10 Apr 2021 | 61 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XB41 | MBA-O | 17.29 | 1.9 km | multiple | 2003–2021 | 17 Jun 2021 | 55 | Disc.: Spacewatch | MPC · JPL |
| 2 | 2003 XN43 | HIL | 15.6 | 4.2 km | multiple | 2003–2021 | 09 Apr 2021 | 37 | Disc.: LINEAR Alt.: 2021 CW34 | MPC · JPL |
| 2 | 2003 XR43 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 22 Jan 2020 | 47 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XX43 | MBA-I | 18.54 | 580 m | multiple | 2003–2021 | 30 Jun 2021 | 65 | Disc.: Spacewatch Alt.: 2008 HH63 | MPC · JPL |
| 0 | 2003 XY43 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2019 | 03 Dec 2019 | 38 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XE44 | MBA-O | 15.8 | 3.9 km | multiple | 1992–2021 | 17 Jan 2021 | 141 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XF44 | MBA-I | 18.4 | 620 m | multiple | 2003–2021 | 08 Jan 2021 | 145 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XG44 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 23 Sep 2019 | 163 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XH44 | MBA-M | 17.6 | 900 m | multiple | 2003–2021 | 12 Jan 2021 | 83 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XK44 | MBA-I | 18.74 | 530 m | multiple | 2003–2021 | 09 Aug 2021 | 88 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XL44 | MBA-I | 18.29 | 650 m | multiple | 2003–2021 | 09 May 2021 | 114 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XM44 | MBA-O | 17.28 | 1.9 km | multiple | 2003–2021 | 31 Aug 2021 | 66 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XO44 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 15 Sep 2020 | 89 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XP44 | MBA-O | 16.73 | 2.5 km | multiple | 2003–2022 | 27 Jan 2022 | 72 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XQ44 | MBA-I | 18.30 | 650 m | multiple | 2003–2021 | 07 Dec 2021 | 60 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XR44 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2021 | 07 Jan 2021 | 92 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XS44 | MBA-O | 16.17 | 3.2 km | multiple | 2003–2022 | 27 Jan 2022 | 173 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XT44 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 18 Jan 2021 | 54 | Disc.: Spacewatch Alt.: 2016 AV177 | MPC · JPL |
| 0 | 2003 XV44 | MBA-M | 17.0 | 2.2 km | multiple | 2003–2021 | 11 Jun 2021 | 75 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XW44 | MBA-M | 18.1 | 710 m | multiple | 2003–2019 | 30 Nov 2019 | 97 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XA45 | MBA-I | 18.7 | 540 m | multiple | 2003–2021 | 04 Jan 2021 | 60 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XB45 | MBA-I | 18.0 | 750 m | multiple | 2003–2020 | 22 Dec 2020 | 86 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XD45 | MBA-M | 17.57 | 1.7 km | multiple | 2003–2021 | 28 Dec 2021 | 49 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XE45 | MBA-M | 17.99 | 1.4 km | multiple | 2003–2021 | 30 Nov 2021 | 67 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XF45 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2021 | 02 Jan 2021 | 125 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XG45 | MBA-O | 17.42 | 1.8 km | multiple | 2003–2021 | 22 Mar 2021 | 47 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XK45 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 16 Jan 2021 | 66 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XL45 | MBA-I | 17.99 | 750 m | multiple | 2003–2021 | 06 Dec 2021 | 29 | Disc.: Spacewatch | MPC · JPL |
| 2 | 2003 XM45 | MBA-M | 19.1 | 640 m | multiple | 2003–2020 | 12 Sep 2020 | 21 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XO45 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2019 | 19 Oct 2019 | 66 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XP45 | MBA-I | 18.5 | 590 m | multiple | 2003–2019 | 01 Nov 2019 | 72 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XQ45 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 16 Nov 2020 | 71 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XR45 | MBA-I | 18.58 | 570 m | multiple | 2003–2021 | 17 Jun 2021 | 60 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XS45 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2021 | 21 Jan 2021 | 87 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XT45 | MBA-I | 18.22 | 670 m | multiple | 2003–2018 | 29 Sep 2018 | 62 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XU45 | MBA-O | 16.94 | 2.3 km | multiple | 1992–2021 | 17 Apr 2021 | 101 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XW45 | MBA-O | 17.19 | 2.0 km | multiple | 2003–2021 | 08 Apr 2021 | 99 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XX45 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2021 | 17 Jan 2021 | 49 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 1 | 2003 XY45 | MBA-I | 19.1 | 450 m | multiple | 2003–2020 | 20 Oct 2020 | 50 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XA46 | MBA-M | 17.84 | 1.5 km | multiple | 2003–2021 | 11 Sep 2021 | 57 | Disc.: LPL/Spacewatch II | MPC · JPL |
| 0 | 2003 XB46 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 22 Jan 2020 | 63 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XC46 | MBA-O | 17.52 | 1.7 km | multiple | 1992–2021 | 06 Apr 2021 | 61 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XE46 | MBA-O | 16.85 | 2.4 km | multiple | 2003–2021 | 09 May 2021 | 51 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XF46 | MBA-M | 17.9 | 1.1 km | multiple | 2003–2020 | 17 Dec 2020 | 61 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XH46 | MBA-O | 17.06 | 2.2 km | multiple | 2003–2021 | 14 Apr 2021 | 90 | Disc.: Spacewatch Alt.: 2010 HH129 | MPC · JPL |
| 0 | 2003 XJ46 | MBA-O | 17.02 | 2.2 km | multiple | 2003–2021 | 14 Apr 2021 | 77 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XK46 | MBA-M | 17.62 | 1.7 km | multiple | 2003–2021 | 04 Oct 2021 | 57 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XL46 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2021 | 12 Jan 2021 | 38 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XM46 | MBA-O | 17.84 | 1.5 km | multiple | 2003–2021 | 15 Apr 2021 | 53 | Disc.: LPL/Spacewatch II Alt.: 2010 CE167 | MPC · JPL |
| 0 | 2003 XN46 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2019 | 29 Sep 2019 | 25 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 XO46 | MBA-M | 17.97 | 1.1 km | multiple | 1998–2022 | 27 Jan 2022 | 43 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 3 | 2003 XP46 | MBA-I | 18.9 | 490 m | multiple | 2003–2020 | 08 Dec 2020 | 53 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 XQ46 | MBA-M | 18.32 | 1.2 km | multiple | 1998–2021 | 07 Sep 2021 | 34 | Disc.: Spacewatch Added on 17 June 2021 | MPC · JPL |
| 1 | 2003 XS46 | HUN | 18.7 | 540 m | multiple | 2003–2020 | 31 Jan 2020 | 37 | Disc.: Spacewatch Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 XV46 | MBA-I | 19.07 | 460 m | multiple | 2003–2021 | 09 Dec 2021 | 46 | Disc.: Spacewatch Added on 24 December 2021 | MPC · JPL |

## Y

| U | Designation | Class | Physical | Physical | Observations | Observations | Observations | Observations | Description and notes | Ref |
| U | Designation | Class | H | D | Opp. | Arc | Last | Used | Description and notes | Ref |
| 0 | 2003 YJ | ATE | 20.34 | 300 m | multiple | 2003–2021 | 09 Nov 2021 | 221 | — | MPC · JPL |
| 0 | 2003 YM | MCA | 16.7 | 1.9 km | multiple | 2000–2021 | 14 Jan 2021 | 85 | — | MPC · JPL |
| 0 | 2003 YM1 | AMO | 18.00 | 890 m | multiple | 2003–2021 | 17 May 2021 | 651 | NEO larger than 1 kilometer | MPC · JPL |
| 7 | 2003 YN1 | APO | 24.9 | 37 m | single | 12 days | 27 Dec 2003 | 23 | AMO at MPC | MPC · JPL |
| 5 | 2003 YP1 | APO | 21.8 | 160 m | single | 56 days | 30 Jan 2004 | 69 | Potentially hazardous object | MPC · JPL |
| 6 | 2003 YQ1 | AMO | 22.0 | 140 m | single | 23 days | 10 Jan 2004 | 54 | — | MPC · JPL |
| 3 | 2003 YR1 | ATE | 22.2 | 130 m | multiple | 2003–2020 | 21 Dec 2020 | 58 | — | MPC · JPL |
| 6 | 2003 YS1 | APO | 19.6 | 430 m | single | 27 days | 13 Jan 2004 | 47 | — | MPC · JPL |
| 2 | 2003 YV1 | MCA | 16.9 | 1.2 km | multiple | 2003–2015 | 15 Aug 2015 | 109 | — | MPC · JPL |
| 2 | 2003 YW1 | AMO | 22.2 | 130 m | multiple | 2003–2019 | 07 Jan 2019 | 46 | — | MPC · JPL |
| 0 | 2003 YZ1 | MCA | 18.94 | 480 m | multiple | 2003–2021 | 17 Apr 2021 | 132 | — | MPC · JPL |
| 0 | 2003 YL2 | MCA | 18.05 | 1.4 km | multiple | 2003–2021 | 03 Dec 2021 | 122 | — | MPC · JPL |
| – | 2003 YQ2 | MBA-M | 18.1 | 710 m | single | 3 days | 21 Dec 2003 | 17 | — | MPC · JPL |
| 0 | 2003 YP3 | APO | 20.22 | 320 m | multiple | 2003–2021 | 10 Jul 2021 | 169 | — | MPC · JPL |
| 0 | 2003 YT3 | MBA-M | 17.1 | 1.1 km | multiple | 2003–2021 | 15 Jan 2021 | 86 | — | MPC · JPL |
| 4 | 2003 YR4 | MCA | 17.9 | 780 m | multiple | 2003–2021 | 14 Jan 2021 | 41 | — | MPC · JPL |
| 0 | 2003 YJ6 | MBA-M | 16.8 | 1.3 km | multiple | 2003–2021 | 17 Jan 2021 | 100 | — | MPC · JPL |
| 0 | 2003 YE7 | MBA-I | 18.20 | 680 m | multiple | 2003–2021 | 15 Apr 2021 | 112 | — | MPC · JPL |
| 1 | 2003 YM7 | MCA | 19.2 | 430 m | multiple | 2003–2020 | 22 Mar 2020 | 97 | — | MPC · JPL |
| 6 | 2003 YN7 | APO | 20.6 | 270 m | single | 25 days | 13 Jan 2004 | 74 | — | MPC · JPL |
| 0 | 2003 YP7 | MBA-M | 17.5 | 940 m | multiple | 2003–2021 | 15 May 2021 | 134 | Alt.: 2013 JL79 | MPC · JPL |
| 2 | 2003 YG8 | HUN | 18.8 | 520 m | multiple | 2003–2021 | 04 Dec 2021 | 39 | Disc.: LINEAR Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 YX8 | MBA-I | 18.42 | 620 m | multiple | 2003–2021 | 05 Jan 2021 | 51 | — | MPC · JPL |
| 0 | 2003 YY8 | HUN | 18.25 | 670 m | multiple | 2003–2021 | 18 May 2021 | 108 | — | MPC · JPL |
| 0 | 2003 YQ9 | MBA-I | 16.9 | 1.2 km | multiple | 2003–2020 | 24 Dec 2020 | 184 | Alt.: 2007 TE385, 2018 CM12 | MPC · JPL |
| 1 | 2003 YE13 | MCA | 17.5 | 1.8 km | multiple | 2003–2021 | 11 Jun 2021 | 69 | Alt.: 2014 WW365 | MPC · JPL |
| 0 | 2003 YC14 | MBA-M | 16.17 | 1.7 km | multiple | 2003–2021 | 18 Apr 2021 | 304 | Alt.: 2017 DM58 | MPC · JPL |
| 0 | 2003 YP17 | AMO | 19.10 | 540 m | multiple | 2003–2021 | 11 Jul 2021 | 855 | — | MPC · JPL |
| 1 | 2003 YR17 | MCA | 17.7 | 1.2 km | multiple | 2003–2020 | 23 Oct 2020 | 102 | — | MPC · JPL |
| 2 | 2003 YS17 | ATE | 21.6 | 170 m | multiple | 2003–2021 | 08 Jan 2021 | 201 | Potentially hazardous object | MPC · JPL |
| 1 | 2003 YG19 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2021 | 16 Jan 2021 | 67 | Alt.: 2015 BT78 | MPC · JPL |
| 0 | 2003 YH19 | MBA-O | 16.0 | 3.5 km | multiple | 2001–2020 | 25 Nov 2020 | 118 | Alt.: 2011 FU86 | MPC · JPL |
| 0 | 2003 YR20 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 17 Jan 2021 | 107 | — | MPC · JPL |
| 3 | 2003 YH22 | HUN | 18.4 | 620 m | multiple | 2003–2020 | 15 Feb 2020 | 38 | — | MPC · JPL |
| 0 | 2003 YT28 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2020 | 28 Jan 2020 | 130 | — | MPC · JPL |
| 0 | 2003 YD30 | HUN | 18.09 | 720 m | multiple | 2003–2021 | 28 Oct 2021 | 118 | — | MPC · JPL |
| 0 | 2003 YH30 | MBA-M | 17.68 | 1.2 km | multiple | 2003–2021 | 12 Jan 2021 | 125 | Alt.: 2003 YS178 | MPC · JPL |
| 0 | 2003 YL30 | MBA-O | 17.01 | 2.2 km | multiple | 2001–2021 | 11 Apr 2021 | 160 | — | MPC · JPL |
| 0 | 2003 YY36 | MBA-M | 18.1 | 1.0 km | multiple | 2003–2021 | 17 Jan 2021 | 47 | Alt.: 2017 DL13 | MPC · JPL |
| 0 | 2003 YC37 | MBA-M | 17.3 | 1.0 km | multiple | 2003–2021 | 16 Jan 2021 | 112 | Disc.: Spacewatch Added on 17 January 2021 Alt.: 2017 GX10 | MPC · JPL |
| 0 | 2003 YB38 | MBA-O | 16.59 | 2.7 km | multiple | 2003–2021 | 09 Apr 2021 | 75 | Alt.: 2015 BU53 | MPC · JPL |
| 0 | 2003 YG38 | MBA-M | 17.5 | 1.3 km | multiple | 2003–2021 | 12 Jan 2021 | 96 | Alt.: 2017 BP104 | MPC · JPL |
| 2 | 2003 YO41 | MBA-I | 18.1 | 710 m | multiple | 2003–2020 | 10 Nov 2020 | 87 | — | MPC · JPL |
| 0 | 2003 YN42 | MBA-M | 17.60 | 1.3 km | multiple | 2003–2022 | 27 Jan 2022 | 111 | — | MPC · JPL |
| 0 | 2003 YS42 | MBA-I | 18.0 | 750 m | multiple | 2003–2021 | 18 Jan 2021 | 87 | Alt.: 2011 BX56, 2013 YT148 | MPC · JPL |
| 0 | 2003 YL44 | MBA-M | 16.9 | 1.2 km | multiple | 2003–2021 | 15 Jan 2021 | 63 | — | MPC · JPL |
| 6 | 2003 YD45 | APO | 21.0 | 220 m | single | 30 days | 19 Jan 2004 | 56 | Potentially hazardous object | MPC · JPL |
| 1 | 2003 YB46 | MBA-I | 17.3 | 1.0 km | multiple | 2003–2020 | 27 Feb 2020 | 87 | — | MPC · JPL |
| 0 | 2003 YS46 | MBA-O | 16.12 | 3.3 km | multiple | 2001–2022 | 09 Jan 2022 | 107 | — | MPC · JPL |
| 0 | 2003 YL49 | MBA-M | 17.53 | 1.7 km | multiple | 2003–2022 | 05 Jan 2022 | 68 | — | MPC · JPL |
| 1 | 2003 YY49 | MCA | 18.48 | 600 m | multiple | 2003–2021 | 27 Nov 2021 | 141 | Alt.: 2021 OJ10 | MPC · JPL |
| 0 | 2003 YD53 | MBA-M | 16.6 | 2.7 km | multiple | 2003–2020 | 11 May 2020 | 80 | — | MPC · JPL |
| 0 | 2003 YF67 | MBA-M | 17.99 | 1.4 km | multiple | 2003–2021 | 08 Nov 2021 | 84 | — | MPC · JPL |
| 0 | 2003 YH67 | MBA-O | 16.63 | 2.6 km | multiple | 2003–2021 | 12 May 2021 | 95 | — | MPC · JPL |
| 0 | 2003 YK67 | MBA-O | 16.2 | 3.2 km | multiple | 2003–2021 | 14 Jan 2021 | 105 | Alt.: 2010 FB39 | MPC · JPL |
| 2 | 2003 YM67 | MBA-M | 18.2 | 680 m | multiple | 2003–2020 | 24 Dec 2020 | 20 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 YT67 | MBA-I | 18.7 | 540 m | multiple | 2003–2020 | 15 Oct 2020 | 40 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 YV67 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2021 | 18 Jan 2021 | 83 | — | MPC · JPL |
| 2 | 2003 YW67 | MBA-M | 19.1 | 640 m | multiple | 2003–2020 | 07 Dec 2020 | 41 | — | MPC · JPL |
| 1 | 2003 YX67 | MBA-I | 18.7 | 540 m | multiple | 2003–2021 | 18 Jan 2021 | 61 | — | MPC · JPL |
| 0 | 2003 YC68 | MBA-M | 17.80 | 1.5 km | multiple | 2003–2021 | 07 Nov 2021 | 68 | — | MPC · JPL |
| 0 | 2003 YW68 | MBA-M | 17.49 | 940 m | multiple | 2003–2021 | 06 Apr 2021 | 94 | — | MPC · JPL |
| – | 2003 YQ70 | MCA | 19.2 | 430 m | single | 8 days | 30 Dec 2003 | 28 | — | MPC · JPL |
| 5 | 2003 YS70 | APO | 29.1 | 5 m | single | 5 days | 27 Dec 2003 | 70 | — | MPC · JPL |
| 7 | 2003 YT70 | AMO | 25.8 | 25 m | single | 22 days | 13 Jan 2004 | 24 | — | MPC · JPL |
| 0 | 2003 YS73 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2020 | 25 Dec 2020 | 188 | Alt.: 2010 HS9 | MPC · JPL |
| 2 | 2003 YA74 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2018 | 13 Dec 2018 | 26 | — | MPC · JPL |
| 0 | 2003 YO74 | MBA-M | 16.8 | 1.3 km | multiple | 2003–2021 | 04 Jan 2021 | 87 | — | MPC · JPL |
| 1 | 2003 YO80 | MBA-O | 16.6 | 3.5 km | multiple | 2003–2021 | 10 Apr 2021 | 98 | Alt.: 2010 CL195 | MPC · JPL |
| 0 | 2003 YE86 | MBA-O | 16.14 | 3.3 km | multiple | 2003–2021 | 01 Apr 2021 | 145 | Alt.: 2010 HT14, 2015 AE1 | MPC · JPL |
| 0 | 2003 YA92 | MBA-O | 14.64 | 6.6 km | multiple | 2002–2022 | 13 Jan 2022 | 375 | Alt.: 2006 FO52, 2008 WS141, 2010 EW54, 2013 LT6 | MPC · JPL |
| 0 | 2003 YX92 | MBA-M | 16.9 | 1.8 km | multiple | 2003–2021 | 13 Jan 2021 | 109 | Alt.: 2006 SY421 | MPC · JPL |
| 0 | 2003 YN93 | MBA-M | 17.72 | 1.6 km | multiple | 2003–2022 | 08 Jan 2022 | 32 | — | MPC · JPL |
| 7 | 2003 YP94 | APO | 23.8 | 62 m | single | 11 days | 02 Jan 2004 | 38 | AMO at MPC | MPC · JPL |
| 1 | 2003 YV97 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 10 Jan 2021 | 309 | Alt.: 2007 RY198 | MPC · JPL |
| 0 | 2003 YL106 | MBA-M | 17.16 | 2.1 km | multiple | 2003–2022 | 06 Jan 2022 | 149 | Alt.: 2014 HB160 | MPC · JPL |
| 0 | 2003 YH107 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2021 | 12 Jan 2021 | 128 | Alt.: 2016 XS19 | MPC · JPL |
| 2 | 2003 YN107 | ATE | 26.5 | 18 m | multiple | 2003–2005 | 31 Mar 2005 | 45 | — | MPC · JPL |
| 0 | 2003 YC108 | MBA-M | 16.5 | 1.5 km | multiple | 2000–2021 | 12 Jun 2021 | 120 | — | MPC · JPL |
| 0 | 2003 YE108 | MBA-I | 18.07 | 720 m | multiple | 2003–2021 | 02 Dec 2021 | 94 | Disc.: LINEAR Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 YM109 | MBA-M | 17.02 | 1.2 km | multiple | 2000–2021 | 18 May 2021 | 186 | Alt.: 2005 JX59, 2016 AC189 | MPC · JPL |
| 0 | 2003 YS110 | HUN | 17.8 | 820 m | multiple | 2003–2020 | 24 Jan 2020 | 142 | Alt.: 2012 BP35, 2014 WA495, 2016 TO10 | MPC · JPL |
| 1 | 2003 YT110 | MBA-O | 18.2 | 1.3 km | multiple | 1997–2020 | 17 Dec 2020 | 97 | — | MPC · JPL |
| 0 | 2003 YU110 | MBA-M | 17.2 | 1.1 km | multiple | 1998–2020 | 23 Oct 2020 | 101 | Disc.: Piszkéstető Stn. Added on 13 September 2020 Alt.: 2015 VZ31 | MPC · JPL |
| 1 | 2003 YV110 | MBA-M | 17.5 | 940 m | multiple | 2002–2019 | 05 Nov 2019 | 91 | — | MPC · JPL |
| 6 | 2003 YH111 | APO | 24.5 | 45 m | single | 2 days | 29 Dec 2003 | 115 | — | MPC · JPL |
| 0 | 2003 YJ112 | MBA-O | 15.85 | 3.8 km | multiple | 2003–2021 | 08 Apr 2021 | 82 | Alt.: 2010 KQ65 | MPC · JPL |
| 0 | 2003 YC115 | MBA-O | 17.09 | 2.1 km | multiple | 2003–2021 | 06 Apr 2021 | 64 | Alt.: 2014 YO7 | MPC · JPL |
| 0 | 2003 YG115 | MBA-M | 17.22 | 1.1 km | multiple | 2003–2021 | 13 May 2021 | 63 | Alt.: 2017 HK33 | MPC · JPL |
| 0 | 2003 YA116 | MBA-O | 15.93 | 3.6 km | multiple | 2003–2021 | 17 May 2021 | 204 | — | MPC · JPL |
| – | 2003 YJ117 | MCA | 18.2 | 680 m | single | 38 days | 24 Jan 2004 | 24 | — | MPC · JPL |
| 7 | 2003 YR117 | APO | 22.9 | 93 m | single | 15 days | 12 Jan 2004 | 45 | — | MPC · JPL |
| 0 | 2003 YE118 | MBA-I | 18.10 | 710 m | multiple | 2003–2021 | 08 Aug 2021 | 73 | — | MPC · JPL |
| 0 | 2003 YL118 | APO | 21.83 | 150 m | multiple | 2003–2022 | 03 Jan 2022 | 110 | Potentially hazardous object | MPC · JPL |
| 0 | 2003 YX118 | MBA-M | 16.66 | 2.0 km | multiple | 2001–2021 | 31 Mar 2021 | 199 | — | MPC · JPL |
| 0 | 2003 YP119 | MBA-O | 16.97 | 2.2 km | multiple | 2003–2021 | 02 Apr 2021 | 139 | Alt.: 2015 DH105 | MPC · JPL |
| 3 | 2003 YA120 | MBA-M | 16.6 | 1.4 km | multiple | 2003–2021 | 06 Apr 2021 | 46 | Alt.: 2007 YP6 | MPC · JPL |
| 0 | 2003 YV121 | MBA-O | 16.14 | 3.3 km | multiple | 2003–2021 | 02 May 2021 | 142 | — | MPC · JPL |
| 0 | 2003 YW123 | MBA-I | 18.26 | 660 m | multiple | 2001–2021 | 06 May 2021 | 93 | Disc.: LPL/Spacewatch II Added on 9 March 2021 | MPC · JPL |
| 0 | 2003 YJ124 | MBA-M | 16.2 | 2.4 km | multiple | 2003–2021 | 17 Jan 2021 | 116 | Alt.: 2006 OB18, 2010 MV3, 2019 QH8 | MPC · JPL |
| 0 | 2003 YK124 | MBA-M | 17.95 | 1.1 km | multiple | 2003–2021 | 13 May 2021 | 115 | — | MPC · JPL |
| 0 | 2003 YM124 | MBA-M | 18.09 | 720 m | multiple | 2003–2021 | 09 Apr 2021 | 74 | — | MPC · JPL |
| 0 | 2003 YW124 | HUN | 18.04 | 730 m | multiple | 2003–2022 | 18 Jan 2022 | 234 | — | MPC · JPL |
| 1 | 2003 YK132 | MCA | 19.5 | 370 m | multiple | 2003–2021 | 11 Mar 2021 | 71 | Disc.: LINEAR Added on 11 May 2021 Alt.: 2013 TA213 | MPC · JPL |
| 7 | 2003 YG136 | ATE | 25.3 | 31 m | single | 4 days | 01 Jan 2004 | 21 | — | MPC · JPL |
| 1 | 2003 YH136 | APO | 19.14 | 520 m | multiple | 2003-2023 | 16 Nov 2023 | 80 | Potentially hazardous object | MPC · JPL |
| 6 | 2003 YJ136 | MCA | 20.4 | 250 m | single | 21 days | 19 Jan 2004 | 28 | — | MPC · JPL |
| 0 | 2003 YG139 | MBA-O | 15.9 | 3.7 km | multiple | 2003–2021 | 19 Jan 2021 | 278 | — | MPC · JPL |
| 0 | 2003 YR139 | MBA-M | 16.50 | 1.5 km | multiple | 2003–2021 | 17 May 2021 | 77 | Disc.: LINEAR Added on 17 January 2021 | MPC · JPL |
| 1 | 2003 YQ140 | MBA-M | 16.9 | 1.2 km | multiple | 2003–2020 | 14 May 2020 | 75 | Alt.: 2006 UH294, 2014 OJ278 | MPC · JPL |
| 0 | 2003 YA141 | MBA-M | 16.7 | 1.4 km | multiple | 2003–2021 | 09 Jun 2021 | 230 | — | MPC · JPL |
| 2 | 2003 YV141 | MBA-M | 17.13 | 1.1 km | multiple | 2003–2021 | 15 Apr 2021 | 42 | — | MPC · JPL |
| 0 | 2003 YY141 | MBA-M | 17.55 | 920 m | multiple | 2003–2021 | 08 Apr 2021 | 117 | — | MPC · JPL |
| 0 | 2003 YH142 | MBA-M | 17.41 | 980 m | multiple | 2003–2021 | 03 May 2021 | 124 | — | MPC · JPL |
| 0 | 2003 YF148 | MBA-M | 16.8 | 1.3 km | multiple | 2002–2021 | 09 Jun 2021 | 95 | Alt.: 2002 QQ128 | MPC · JPL |
| 0 | 2003 YC150 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 13 May 2020 | 152 | — | MPC · JPL |
| 2 | 2003 YA152 | MCA | 19.3 | 410 m | multiple | 2003–2019 | 09 Feb 2019 | 79 | Alt.: 2018 VN4 | MPC · JPL |
| 0 | 2003 YH152 | MBA-O | 16.96 | 2.3 km | multiple | 2003–2021 | 17 Apr 2021 | 73 | — | MPC · JPL |
| 1 | 2003 YH153 | MCA | 18.6 | 570 m | multiple | 2003–2017 | 11 Oct 2017 | 84 | — | MPC · JPL |
| 0 | 2003 YW155 | MBA-M | 17.09 | 2.1 km | multiple | 1994–2022 | 21 Jan 2022 | 77 | — | MPC · JPL |
| 0 | 2003 YC157 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2021 | 14 Jan 2021 | 88 | — | MPC · JPL |
| 0 | 2003 YF157 | MBA-M | 17.49 | 1.8 km | multiple | 2000–2021 | 27 Nov 2021 | 70 | Alt.: 2019 JN31 | MPC · JPL |
| 0 | 2003 YK157 | JT | 13.58 | 11 km | multiple | 2001–2021 | 30 Jul 2021 | 213 | Trojan camp (L5) | MPC · JPL |
| 0 | 2003 YZ161 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 18 Mar 2021 | 94 | Disc.: Spacewatch Added on 11 May 2021 Alt.: 2015 AQ51 | MPC · JPL |
| 0 | 2003 YM162 | MBA-M | 16.17 | 1.7 km | multiple | 2001–2021 | 02 Apr 2021 | 278 | Alt.: 2010 EN3 | MPC · JPL |
| 0 | 2003 YX162 | MBA-O | 15.7 | 4.0 km | multiple | 2003–2021 | 18 Jan 2021 | 137 | Alt.: 2010 HJ36 | MPC · JPL |
| 2 | 2003 YA164 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 17 Dec 2020 | 51 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 2 | 2003 YT165 | MBA-M | 18.1 | 710 m | multiple | 2003–2019 | 17 Dec 2019 | 43 | — | MPC · JPL |
| 0 | 2003 YB166 | MBA-O | 16.6 | 2.7 km | multiple | 2002–2021 | 18 Jan 2021 | 94 | — | MPC · JPL |
| 0 | 2003 YR166 | MBA-I | 18.3 | 650 m | multiple | 1996–2020 | 09 Sep 2020 | 95 | Alt.: 2013 QH47 | MPC · JPL |
| 0 | 2003 YA167 | MBA-M | 17.9 | 1.1 km | multiple | 2003–2020 | 16 Oct 2020 | 67 | — | MPC · JPL |
| 0 | 2003 YW170 | MBA-M | 16.94 | 2.3 km | multiple | 2003–2021 | 28 Dec 2021 | 160 | Alt.: 2007 VQ206 | MPC · JPL |
| 0 | 2003 YB172 | MBA-M | 17.87 | 790 m | multiple | 2003–2021 | 12 May 2021 | 96 | Alt.: 2014 OC68, 2015 XU171 | MPC · JPL |
| 0 | 2003 YH173 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 21 Apr 2020 | 45 | — | MPC · JPL |
| 0 | 2003 YV173 | MBA-O | 17.53 | 1.7 km | multiple | 2003–2021 | 09 Apr 2021 | 53 | Alt.: 2010 KC77 | MPC · JPL |
| 0 | 2003 YX173 | MBA-M | 16.8 | 1.8 km | multiple | 2003–2021 | 13 Jan 2021 | 105 | Alt.: 2007 VL371 | MPC · JPL |
| 0 | 2003 YU174 | MBA-M | 16.73 | 1.9 km | multiple | 2003–2021 | 01 Apr 2021 | 207 | Alt.: 2013 GM13 | MPC · JPL |
| 0 | 2003 YY174 | MBA-I | 17.88 | 790 m | multiple | 2003–2021 | 06 Nov 2021 | 103 | Alt.: 2008 CQ153, 2014 YW47 | MPC · JPL |
| 0 | 2003 YF176 | MBA-M | 17.7 | 1.6 km | multiple | 2003–2020 | 22 Sep 2020 | 59 | Disc.: Mauna Kea Obs. Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 YG176 | MBA-I | 19.5 | 370 m | multiple | 2003–2021 | 12 Aug 2021 | 33 | Disc.: Mauna Kea Obs. Added on 21 August 2021 Alt.: 2014 WQ14 | MPC · JPL |
| 1 | 2003 YH176 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2021 | 04 Jan 2021 | 43 | Alt.: 2005 GJ195, 2010 AA18 | MPC · JPL |
| 0 | 2003 YL176 | MBA-I | 18.5 | 590 m | multiple | 2002–2020 | 13 Sep 2020 | 67 | — | MPC · JPL |
| 0 | 2003 YT176 | MBA-O | 17.47 | 1.8 km | multiple | 2003–2021 | 16 Jan 2021 | 58 | Disc.: Mauna Kea Obs. Added on 30 September 2021 Alt.: 2005 EH312, 2014 WN457 | MPC · JPL |
| 0 | 2003 YV176 | MBA-O | 17.31 | 1.9 km | multiple | 2000–2021 | 11 Sep 2021 | 142 | Alt.: 2017 SK114 | MPC · JPL |
| 0 | 2003 YY176 | MBA-M | 18.23 | 1.3 km | multiple | 2003–2021 | 07 Nov 2021 | 41 | Disc.: Mauna Kea Obs. Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 YB177 | MBA-M | 18.2 | 680 m | multiple | 2003–2021 | 13 Feb 2021 | 40 | Disc.: Mauna Kea Obs. Added on 9 March 2021 | MPC · JPL |
| 0 | 2003 YK177 | MBA-M | 17.9 | 1.5 km | multiple | 2003–2021 | 07 Nov 2021 | 26 | Disc.: Mauna Kea Obs. Added on 29 January 2022 | MPC · JPL |
| 0 | 2003 YU177 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2021 | 18 Jan 2021 | 115 | — | MPC · JPL |
| 0 | 2003 YN178 | MBA-M | 18.16 | 980 m | multiple | 2003–2022 | 25 Jan 2022 | 48 | — | MPC · JPL |
| 0 | 2003 YP178 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2020 | 22 Dec 2020 | 49 | — | MPC · JPL |
| 2 | 2003 YJ179 | TNO | 7.1 | 126 km | multiple | 2003–2019 | 08 Feb 2019 | 28 | LoUTNOs, cubewano (cold) | MPC · JPL |
| 2 | 2003 YK179 | TNO | 7.5 | 132 km | multiple | 2003–2012 | 14 Nov 2012 | 19 | LoUTNOs, other TNO | MPC · JPL |
| 3 | 2003 YM179 | TNO | 8.0 | 105 km | multiple | 2003–2020 | 18 Feb 2020 | 12 | LoUTNOs, other TNO | MPC · JPL |
| 3 | 2003 YN179 | TNO | 6.8 | 145 km | multiple | 2002–2013 | 06 Nov 2013 | 19 | LoUTNOs, cubewano (cold) | MPC · JPL |
| 4 | 2003 YP179 | TNO | 7.35 | 113 km | multiple | 2003–2021 | 11 Jan 2021 | 22 | LoUTNOs, cubewano (cold) | MPC · JPL |
| 2 | 2003 YQ179 | TNO | 7.07 | 145 km | multiple | 2003–2021 | 20 Mar 2021 | 105 | LoUTNOs, SDO | MPC · JPL |
| 2 | 2003 YR179 | TNO | 7.1 | 195 km | multiple | 2003–2019 | 08 Feb 2019 | 16 | LoUTNOs, cubewano (hot) | MPC · JPL |
| 2 | 2003 YS179 | TNO | 6.8 | 109 km | multiple | 2003–2020 | 04 Jan 2020 | 23 | LoUTNOs, cubewano (cold), binary: 95 km | MPC · JPL |
| 2 | 2003 YT179 | TNO | 7.1 | 126 km | multiple | 2003–2020 | 18 Feb 2020 | 19 | LoUTNOs, cubewano (cold) | MPC · JPL |
| 3 | 2003 YU179 | TNO | 6.92 | 137 km | multiple | 2003–2021 | 20 Mar 2021 | 36 | LoUTNOs, cubewano (cold), binary: 88 km | MPC · JPL |
| 5 | 2003 YV179 | TNO | 6.99 | 166 km | multiple | 2003–2021 | 11 Jan 2021 | 21 | LoUTNOs, other TNO | MPC · JPL |
| 3 | 2003 YX179 | TNO | 7.0 | 132 km | multiple | 2003–2020 | 04 Jan 2020 | 20 | LoUTNOs, cubewano (cold) | MPC · JPL |
| E | 2003 YY179 | TNO | 9.1 | 72 km | single | 74 days | 16 Dec 2003 | 6 | LoUTNOs, plutino? | MPC · JPL |
| E | 2003 YZ179 | TNO | 7.6 | 104 km | single | 113 days | 15 Apr 2004 | 5 | LoUTNOs, cubewano? | MPC · JPL |
| 0 | 2003 YB181 | MBA-O | 17.1 | 3.4 km | multiple | 2003–2020 | 18 Apr 2020 | 131 | — | MPC · JPL |
| 0 | 2003 YZ182 | MBA-O | 16.71 | 2.5 km | multiple | 2003–2021 | 17 Apr 2021 | 86 | — | MPC · JPL |
| 0 | 2003 YA183 | MBA-O | 16.38 | 2.9 km | multiple | 2003–2021 | 20 May 2021 | 139 | — | MPC · JPL |
| 0 | 2003 YB183 | MBA-M | 17.28 | 1.5 km | multiple | 2003–2021 | 06 May 2021 | 214 | — | MPC · JPL |
| 0 | 2003 YC183 | MBA-I | 18.16 | 690 m | multiple | 2003–2021 | 01 Nov 2021 | 149 | — | MPC · JPL |
| 0 | 2003 YE183 | MBA-I | 17.65 | 880 m | multiple | 2003–2021 | 09 May 2021 | 129 | — | MPC · JPL |
| 0 | 2003 YK183 | MBA-M | 17.48 | 1.8 km | multiple | 2003–2021 | 02 Dec 2021 | 119 | — | MPC · JPL |
| 0 | 2003 YP183 | MBA-I | 18.1 | 710 m | multiple | 2003–2020 | 23 Mar 2020 | 79 | — | MPC · JPL |
| 0 | 2003 YR183 | MBA-O | 16.55 | 2.7 km | multiple | 2003–2021 | 09 May 2021 | 128 | — | MPC · JPL |
| 0 | 2003 YT183 | MBA-I | 18.3 | 650 m | multiple | 2003–2021 | 18 Jan 2021 | 90 | — | MPC · JPL |
| 0 | 2003 YV183 | MBA-M | 17.10 | 1.1 km | multiple | 2003–2021 | 01 May 2021 | 140 | — | MPC · JPL |
| 0 | 2003 YW183 | MBA-I | 17.69 | 860 m | multiple | 2002–2022 | 24 Jan 2022 | 175 | — | MPC · JPL |
| 0 | 2003 YY183 | MBA-O | 16.47 | 2.8 km | multiple | 2003–2021 | 03 May 2021 | 125 | — | MPC · JPL |
| 0 | 2003 YZ183 | MBA-I | 17.88 | 790 m | multiple | 2003–2021 | 10 May 2021 | 122 | — | MPC · JPL |
| 1 | 2003 YA184 | MBA-I | 18.4 | 620 m | multiple | 2003–2021 | 05 Jan 2021 | 162 | — | MPC · JPL |
| 0 | 2003 YB184 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 22 Apr 2020 | 61 | — | MPC · JPL |
| 0 | 2003 YG184 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 15 Jan 2021 | 94 | — | MPC · JPL |
| 0 | 2003 YH184 | MBA-M | 17.29 | 1.9 km | multiple | 2003–2021 | 30 Nov 2021 | 100 | — | MPC · JPL |
| 0 | 2003 YK184 | MBA-O | 16.1 | 3.4 km | multiple | 2003–2021 | 17 Jan 2021 | 107 | — | MPC · JPL |
| 0 | 2003 YL184 | MBA-I | 17.42 | 980 m | multiple | 2003–2021 | 15 May 2021 | 141 | — | MPC · JPL |
| 0 | 2003 YM184 | MBA-M | 18.0 | 750 m | multiple | 2003–2021 | 14 Jan 2021 | 74 | — | MPC · JPL |
| 0 | 2003 YO184 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2021 | 17 Jan 2021 | 111 | — | MPC · JPL |
| 0 | 2003 YP184 | MBA-M | 17.66 | 1.6 km | multiple | 2003–2021 | 29 Dec 2021 | 82 | — | MPC · JPL |
| 0 | 2003 YQ184 | MBA-I | 18.0 | 750 m | multiple | 2003–2020 | 15 Dec 2020 | 95 | — | MPC · JPL |
| 0 | 2003 YR184 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2021 | 05 Jan 2021 | 84 | — | MPC · JPL |
| 0 | 2003 YS184 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 06 Jan 2021 | 93 | — | MPC · JPL |
| 0 | 2003 YT184 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 11 Jan 2021 | 149 | — | MPC · JPL |
| 1 | 2003 YU184 | MBA-I | 18.8 | 520 m | multiple | 2003–2017 | 13 Nov 2017 | 56 | — | MPC · JPL |
| 0 | 2003 YV184 | MBA-O | 17.29 | 1.9 km | multiple | 2003–2021 | 06 Oct 2021 | 61 | — | MPC · JPL |
| 0 | 2003 YY184 | MCA | 17.9 | 780 m | multiple | 2003–2020 | 22 Jul 2020 | 54 | — | MPC · JPL |
| 0 | 2003 YZ184 | HUN | 18.3 | 650 m | multiple | 2003–2021 | 08 Jan 2021 | 58 | — | MPC · JPL |
| 0 | 2003 YA185 | MBA-I | 18.5 | 590 m | multiple | 2003–2020 | 16 Dec 2020 | 75 | — | MPC · JPL |
| 0 | 2003 YB185 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 13 Jan 2021 | 56 | — | MPC · JPL |
| 0 | 2003 YD185 | MBA-I | 18.52 | 590 m | multiple | 2003–2022 | 07 Jan 2022 | 124 | — | MPC · JPL |
| 0 | 2003 YF185 | MBA-I | 18.5 | 590 m | multiple | 2003–2021 | 23 Jan 2021 | 79 | — | MPC · JPL |
| 0 | 2003 YG185 | MBA-I | 18.5 | 590 m | multiple | 2003–2020 | 22 Sep 2020 | 90 | — | MPC · JPL |
| 0 | 2003 YH185 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2020 | 05 Nov 2020 | 59 | — | MPC · JPL |
| 0 | 2003 YJ185 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 17 Jan 2021 | 94 | — | MPC · JPL |
| 0 | 2003 YK185 | MBA-O | 15.9 | 3.7 km | multiple | 2003–2021 | 18 Jan 2021 | 129 | Alt.: 2010 JU6 | MPC · JPL |
| 0 | 2003 YL185 | MBA-M | 17.16 | 1.1 km | multiple | 2003–2021 | 09 May 2021 | 138 | — | MPC · JPL |
| 0 | 2003 YM185 | MBA-I | 18.43 | 610 m | multiple | 2003–2021 | 14 Jun 2021 | 74 | — | MPC · JPL |
| 0 | 2003 YN185 | MBA-O | 16.95 | 2.3 km | multiple | 2003–2021 | 09 May 2021 | 55 | — | MPC · JPL |
| 0 | 2003 YO185 | MBA-M | 17.79 | 1.5 km | multiple | 2003–2022 | 05 Jan 2022 | 118 | — | MPC · JPL |
| 0 | 2003 YP185 | MBA-M | 16.7 | 1.4 km | multiple | 2002–2019 | 30 Dec 2019 | 68 | — | MPC · JPL |
| 0 | 2003 YQ185 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 24 Dec 2019 | 59 | — | MPC · JPL |
| 0 | 2003 YS185 | HUN | 18.00 | 750 m | multiple | 2003–2021 | 07 May 2021 | 133 | — | MPC · JPL |
| 0 | 2003 YT185 | MBA-M | 17.29 | 1.5 km | multiple | 2003–2022 | 27 Jan 2022 | 122 | — | MPC · JPL |
| 0 | 2003 YU185 | MBA-I | 18.7 | 540 m | multiple | 1996–2020 | 08 Dec 2020 | 84 | — | MPC · JPL |
| 0 | 2003 YV185 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 18 Jan 2021 | 58 | — | MPC · JPL |
| 0 | 2003 YW185 | MBA-M | 17.95 | 1.4 km | multiple | 2003–2021 | 01 Nov 2021 | 59 | — | MPC · JPL |
| 0 | 2003 YX185 | MBA-M | 16.87 | 1.8 km | multiple | 2000–2022 | 19 Jan 2022 | 94 | — | MPC · JPL |
| 0 | 2003 YY185 | MBA-I | 19.25 | 420 m | multiple | 2003–2022 | 25 Jan 2022 | 51 | — | MPC · JPL |
| 0 | 2003 YZ185 | MBA-I | 18.56 | 580 m | multiple | 2003–2021 | 30 Nov 2021 | 85 | — | MPC · JPL |
| 0 | 2003 YA186 | MBA-M | 17.1 | 1.1 km | multiple | 2003–2021 | 21 Jan 2021 | 56 | — | MPC · JPL |
| 0 | 2003 YB186 | MBA-I | 18.7 | 540 m | multiple | 2003–2020 | 10 Oct 2020 | 60 | — | MPC · JPL |
| 0 | 2003 YD186 | MBA-I | 18.70 | 540 m | multiple | 2003–2021 | 08 Dec 2021 | 59 | — | MPC · JPL |
| 0 | 2003 YE186 | MBA-M | 17.5 | 1.3 km | multiple | 2003–2020 | 19 Nov 2020 | 72 | Alt.: 2013 AJ170 | MPC · JPL |
| 1 | 2003 YF186 | MCA | 18.2 | 680 m | multiple | 2003–2018 | 05 Jan 2018 | 35 | — | MPC · JPL |
| 0 | 2003 YH186 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 22 Jan 2021 | 81 | Alt.: 2010 HX35 | MPC · JPL |
| 0 | 2003 YJ186 | MBA-O | 16.66 | 2.6 km | multiple | 2003–2021 | 11 May 2021 | 106 | Alt.: 2010 JY12 | MPC · JPL |
| 1 | 2003 YK186 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 21 Aug 2019 | 30 | — | MPC · JPL |
| 0 | 2003 YL186 | MBA-I | 18.19 | 680 m | multiple | 2003–2021 | 05 Nov 2021 | 91 | — | MPC · JPL |
| 0 | 2003 YM186 | MBA-O | 17.37 | 1.9 km | multiple | 2003–2021 | 19 May 2021 | 81 | — | MPC · JPL |
| 0 | 2003 YN186 | MBA-I | 18.2 | 680 m | multiple | 1996–2020 | 17 Oct 2020 | 62 | — | MPC · JPL |
| 0 | 2003 YP186 | HUN | 18.3 | 650 m | multiple | 2003–2019 | 04 Nov 2019 | 55 | — | MPC · JPL |
| 1 | 2003 YQ186 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2016 | 10 Nov 2016 | 23 | — | MPC · JPL |
| 0 | 2003 YR186 | MBA-O | 16.49 | 2.8 km | multiple | 2003–2021 | 14 Apr 2021 | 159 | — | MPC · JPL |
| 0 | 2003 YS186 | MBA-O | 15.9 | 3.7 km | multiple | 2003–2021 | 18 Jan 2021 | 139 | — | MPC · JPL |
| 0 | 2003 YT186 | MBA-O | 16.18 | 3.2 km | multiple | 2003–2021 | 09 Jun 2021 | 137 | — | MPC · JPL |
| 0 | 2003 YU186 | MBA-M | 17.80 | 820 m | multiple | 2003–2021 | 10 May 2021 | 97 | — | MPC · JPL |
| 1 | 2003 YW186 | MBA-I | 18.0 | 750 m | multiple | 2003–2019 | 25 Nov 2019 | 87 | — | MPC · JPL |
| 0 | 2003 YY186 | MBA-O | 16.1 | 3.4 km | multiple | 2003–2020 | 23 Dec 2020 | 94 | — | MPC · JPL |
| 0 | 2003 YZ186 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 17 Jan 2021 | 86 | — | MPC · JPL |
| 0 | 2003 YA187 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2020 | 16 Nov 2020 | 117 | — | MPC · JPL |
| 0 | 2003 YC187 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 18 Jan 2021 | 71 | — | MPC · JPL |
| 0 | 2003 YD187 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2020 | 25 May 2020 | 70 | — | MPC · JPL |
| 0 | 2003 YE187 | MBA-O | 16.0 | 3.5 km | multiple | 2003–2021 | 04 Jan 2021 | 91 | — | MPC · JPL |
| 0 | 2003 YF187 | MBA-M | 17.84 | 800 m | multiple | 2003–2021 | 17 Apr 2021 | 73 | — | MPC · JPL |
| 0 | 2003 YG187 | MBA-O | 16.62 | 2.6 km | multiple | 2003–2021 | 14 May 2021 | 121 | Alt.: 2010 KD20 | MPC · JPL |
| 0 | 2003 YH187 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2019 | 08 Feb 2019 | 62 | — | MPC · JPL |
| 1 | 2003 YJ187 | MBA-M | 17.7 | 860 m | multiple | 2003–2019 | 20 Dec 2019 | 60 | — | MPC · JPL |
| 0 | 2003 YK187 | MBA-O | 16.22 | 3.2 km | multiple | 1993–2021 | 04 May 2021 | 167 | — | MPC · JPL |
| 0 | 2003 YM187 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 18 Jan 2021 | 73 | — | MPC · JPL |
| 0 | 2003 YN187 | MBA-I | 17.98 | 750 m | multiple | 1993–2021 | 10 Dec 2021 | 135 | Alt.: 1993 BM9 | MPC · JPL |
| 0 | 2003 YO187 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 22 Dec 2020 | 69 | — | MPC · JPL |
| 0 | 2003 YQ187 | MBA-O | 17.0 | 2.2 km | multiple | 2002–2020 | 21 Jan 2020 | 72 | — | MPC · JPL |
| 0 | 2003 YR187 | MBA-M | 17.70 | 1.6 km | multiple | 2003–2021 | 13 Sep 2021 | 58 | — | MPC · JPL |
| 0 | 2003 YS187 | MBA-M | 16.7 | 1.9 km | multiple | 2003–2021 | 06 Jan 2021 | 74 | — | MPC · JPL |
| 0 | 2003 YT187 | MBA-O | 16.76 | 2.5 km | multiple | 2003–2021 | 10 May 2021 | 94 | — | MPC · JPL |
| 0 | 2003 YU187 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 09 Jan 2021 | 53 | — | MPC · JPL |
| 0 | 2003 YW187 | MBA-I | 18.05 | 730 m | multiple | 2003–2021 | 06 Nov 2021 | 99 | — | MPC · JPL |
| 0 | 2003 YX187 | MBA-I | 17.9 | 780 m | multiple | 2003–2020 | 16 Apr 2020 | 54 | — | MPC · JPL |
| 0 | 2003 YY187 | MBA-M | 17.91 | 780 m | multiple | 2003–2021 | 08 May 2021 | 71 | — | MPC · JPL |
| 0 | 2003 YZ187 | MBA-O | 17.86 | 1.5 km | multiple | 2003–2019 | 07 May 2019 | 48 | — | MPC · JPL |
| 0 | 2003 YA188 | MBA-I | 18.95 | 480 m | multiple | 2003–2021 | 05 Jun 2021 | 49 | — | MPC · JPL |
| 0 | 2003 YB188 | MBA-O | 17.06 | 2.2 km | multiple | 2003–2021 | 03 May 2021 | 70 | — | MPC · JPL |
| 0 | 2003 YC188 | MBA-I | 18.31 | 650 m | multiple | 2003–2021 | 07 Nov 2021 | 64 | — | MPC · JPL |
| 1 | 2003 YD188 | MCA | 19.3 | 410 m | multiple | 2003–2019 | 03 Jan 2019 | 31 | — | MPC · JPL |
| 0 | 2003 YE188 | MBA-I | 17.9 | 780 m | multiple | 2003–2020 | 09 Oct 2020 | 72 | — | MPC · JPL |
| 0 | 2003 YF188 | HUN | 18.6 | 570 m | multiple | 2003–2020 | 22 Jan 2020 | 53 | — | MPC · JPL |
| 1 | 2003 YG188 | MBA-M | 18.20 | 680 m | multiple | 2003–2021 | 06 Apr 2021 | 47 | — | MPC · JPL |
| 0 | 2003 YH188 | MBA-I | 18.86 | 500 m | multiple | 2003–2021 | 04 Oct 2021 | 33 | — | MPC · JPL |
| 0 | 2003 YJ188 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2021 | 07 Jun 2021 | 79 | — | MPC · JPL |
| 0 | 2003 YK188 | MBA-I | 18.63 | 560 m | multiple | 2003–2021 | 08 Nov 2021 | 55 | — | MPC · JPL |
| 2 | 2003 YL188 | MBA-O | 17.6 | 1.7 km | multiple | 2003–2019 | 05 Feb 2019 | 27 | — | MPC · JPL |
| 2 | 2003 YM188 | MBA-M | 18.8 | 520 m | multiple | 2003–2019 | 25 Sep 2019 | 43 | Alt.: 2007 VN258 | MPC · JPL |
| 0 | 2003 YQ188 | MBA-I | 18.1 | 710 m | multiple | 2003–2021 | 18 Jan 2021 | 76 | — | MPC · JPL |
| 0 | 2003 YR188 | MBA-I | 17.8 | 820 m | multiple | 2003–2020 | 22 Mar 2020 | 70 | — | MPC · JPL |
| 0 | 2003 YS188 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 16 May 2020 | 50 | — | MPC · JPL |
| 0 | 2003 YU188 | MBA-I | 18.53 | 580 m | multiple | 2003–2022 | 24 Jan 2022 | 45 | — | MPC · JPL |
| 0 | 2003 YV188 | MBA-M | 18.1 | 710 m | multiple | 2003–2021 | 23 Jan 2021 | 70 | — | MPC · JPL |
| 0 | 2003 YW188 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 18 Apr 2020 | 84 | Alt.: 2010 BN26 | MPC · JPL |
| 0 | 2003 YX188 | MBA-M | 17.8 | 820 m | multiple | 2003–2020 | 11 Dec 2020 | 65 | — | MPC · JPL |
| 0 | 2003 YZ188 | MBA-I | 18.8 | 520 m | multiple | 2003–2019 | 06 Jan 2019 | 44 | — | MPC · JPL |
| 0 | 2003 YA189 | MBA-I | 18.3 | 650 m | multiple | 2003–2021 | 18 Jan 2021 | 97 | — | MPC · JPL |
| 0 | 2003 YB189 | MBA-O | 16.90 | 2.3 km | multiple | 2003–2021 | 09 Apr 2021 | 96 | Alt.: 2010 JK191 | MPC · JPL |
| 0 | 2003 YC189 | MBA-M | 17.96 | 760 m | multiple | 2003–2021 | 13 May 2021 | 76 | — | MPC · JPL |
| 1 | 2003 YD189 | MBA-M | 17.7 | 860 m | multiple | 2003–2019 | 08 Nov 2019 | 53 | — | MPC · JPL |
| 0 | 2003 YE189 | MBA-O | 16.91 | 2.3 km | multiple | 2003–2021 | 02 Apr 2021 | 81 | Alt.: 2010 HO129 | MPC · JPL |
| 0 | 2003 YF189 | MBA-M | 17.97 | 760 m | multiple | 2003–2021 | 15 Apr 2021 | 88 | — | MPC · JPL |
| 0 | 2003 YG189 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 17 Jan 2021 | 64 | — | MPC · JPL |
| 0 | 2003 YH189 | MBA-O | 17.13 | 2.1 km | multiple | 2003–2021 | 12 May 2021 | 80 | — | MPC · JPL |
| 0 | 2003 YK189 | MBA-O | 16.7 | 2.5 km | multiple | 1992–2021 | 12 Jan 2021 | 52 | — | MPC · JPL |
| 0 | 2003 YL189 | HUN | 18.68 | 550 m | multiple | 2003–2021 | 05 Jul 2021 | 49 | — | MPC · JPL |
| 0 | 2003 YM189 | MBA-M | 17.63 | 1.3 km | multiple | 2003–2022 | 10 Jan 2022 | 44 | — | MPC · JPL |
| 0 | 2003 YN189 | MBA-I | 19.1 | 450 m | multiple | 2003–2019 | 01 Nov 2019 | 66 | — | MPC · JPL |
| 0 | 2003 YO189 | HIL | 15.9 | 3.7 km | multiple | 2003–2020 | 21 Jan 2020 | 58 | — | MPC · JPL |
| 1 | 2003 YP189 | MBA-I | 18.6 | 570 m | multiple | 2003–2020 | 20 Jan 2020 | 57 | — | MPC · JPL |
| 0 | 2003 YR189 | MBA-M | 18.04 | 730 m | multiple | 2003–2021 | 10 May 2021 | 88 | — | MPC · JPL |
| 0 | 2003 YS189 | MBA-I | 17.67 | 870 m | multiple | 2003–2021 | 13 Jul 2021 | 80 | — | MPC · JPL |
| 0 | 2003 YT189 | MBA-M | 17.2 | 1.1 km | multiple | 2003–2021 | 17 Jan 2021 | 62 | — | MPC · JPL |
| 0 | 2003 YV189 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 01 Jan 2020 | 56 | — | MPC · JPL |
| 0 | 2003 YW189 | HUN | 18.30 | 650 m | multiple | 2003–2021 | 30 Oct 2021 | 71 | — | MPC · JPL |
| 0 | 2003 YX189 | MBA-M | 18.16 | 690 m | multiple | 2003–2021 | 08 May 2021 | 41 | — | MPC · JPL |
| 0 | 2003 YY189 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2017 | 18 May 2017 | 28 | — | MPC · JPL |
| 2 | 2003 YZ189 | MBA-M | 18.4 | 620 m | multiple | 2003–2019 | 05 Nov 2019 | 30 | — | MPC · JPL |
| 0 | 2003 YA190 | MBA-M | 17.8 | 1.2 km | multiple | 2003–2020 | 11 Oct 2020 | 65 | — | MPC · JPL |
| 1 | 2003 YB190 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2020 | 23 Jan 2020 | 28 | Disc.: Spacewatch Added on 22 July 2020 | MPC · JPL |
| 1 | 2003 YD190 | MBA-M | 17.4 | 1.4 km | multiple | 2003–2021 | 18 Jan 2021 | 55 | Disc.: Spacewatch Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 YE190 | MBA-M | 17.6 | 1.3 km | multiple | 1998–2020 | 16 Dec 2020 | 73 | Disc.: Spacewatch Added on 22 July 2020 | MPC · JPL |
| 1 | 2003 YG190 | MBA-M | 18.6 | 800 m | multiple | 2003–2020 | 14 Sep 2020 | 40 | Disc.: Spacewatch Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 YH190 | MBA-M | 18.2 | 960 m | multiple | 2003–2021 | 15 Jan 2021 | 47 | Disc.: Spacewatch Added on 19 October 2020 | MPC · JPL |
| 3 | 2003 YJ190 | MBA-M | 18.2 | 960 m | multiple | 2003–2020 | 13 Oct 2020 | 29 | Disc.: MLS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 YK190 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2021 | 17 Jan 2021 | 65 | Disc.: LPL/Spacewatch II Added on 17 January 2021 | MPC · JPL |
| 1 | 2003 YM190 | MBA-M | 17.5 | 1.3 km | multiple | 2003–2021 | 16 Jan 2021 | 66 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 YN190 | MBA-I | 18.3 | 650 m | multiple | 2003–2020 | 24 Oct 2020 | 38 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 YP190 | MBA-M | 18.8 | 730 m | multiple | 2003–2021 | 13 Jan 2021 | 39 | Disc.: Spacewatch Added on 9 March 2021 | MPC · JPL |
| 0 | 2003 YR190 | MBA-I | 18.7 | 540 m | multiple | 1999–2017 | 22 Oct 2017 | 31 | Disc.: MLS Added on 17 June 2021 | MPC · JPL |
| 1 | 2003 YS190 | HUN | 18.6 | 570 m | multiple | 2003–2021 | 18 Jun 2021 | 40 | Disc.: Spacewatch Added on 21 August 2021 | MPC · JPL |
| 3 | 2003 YU190 | MBA-O | 17.6 | 1.7 km | multiple | 2003–2019 | 08 Oct 2019 | 27 | Disc.: Pan-STARRS Added on 30 September 2021 | MPC · JPL |
| 1 | 2003 YV190 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2019 | 04 Dec 2019 | 25 | Disc.: MLS Added on 30 September 2021 | MPC · JPL |
| 0 | 2003 YW190 | MBA-I | 18.3 | 650 m | multiple | 2002–2021 | 28 Sep 2021 | 48 | Disc.: Pan-STARRS Added on 30 September 2021 | MPC · JPL |
| 0 | 2003 YX190 | MBA-M | 18.22 | 1.3 km | multiple | 2003–2021 | 13 Sep 2021 | 33 | Disc.: Pan-STARRS Added on 30 September 2021 | MPC · JPL |
| 1 | 2003 YY190 | MBA-M | 18.2 | 1.3 km | multiple | 2003–2021 | 15 Sep 2021 | 19 | Disc.: NEAT Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 YZ190 | MBA-M | 17.6 | 900 m | multiple | 2003–2021 | 14 May 2021 | 47 | Disc.: SDSS Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 YA191 | HUN | 19.28 | 410 m | multiple | 2003–2022 | 12 Jan 2022 | 45 | Disc.: Spacewatch Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 YB191 | MBA-I | 19.28 | 410 m | multiple | 2003–2021 | 04 Oct 2021 | 35 | Disc.: Pan-STARRS Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 YC191 | HUN | 19.41 | 390 m | multiple | 2003–2022 | 25 Jan 2022 | 33 | Disc.: No observations Added on 29 January 2022 | MPC · JPL |
| 1 | 2003 YD191 | MBA-M | 17.5 | 1.8 km | multiple | 2003–2022 | 26 Jan 2022 | 45 | Disc.: No observations Added on 29 January 2022 | MPC · JPL |