# List of unnumbered minor planets: 2003 U (380–429)

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 16–31 October 2003. Since this period yielded a high number of provisional discoveries, it is further split into several standalone pages. As of February 2022, a total of 471 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 | | | |

## U

| 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 UG380 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2021 | 05 Jan 2021 | 50 | Disc.: SDSS Alt.: 2008 ON5 | MPC · JPL |
| – | 2003 UJ380 | MBA-M | 19.1 | 640 m | single | 5 days | 24 Oct 2003 | 6 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UK380 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 23 Mar 2020 | 51 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UP380 | MBA-M | 17.95 | 1.4 km | multiple | 2003–2021 | 03 Oct 2021 | 65 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UR380 | HIL | 16.8 | 2.4 km | multiple | 2003–2019 | 28 Nov 2019 | 38 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 US380 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2021 | 17 Jan 2021 | 90 | Disc.: SDSS Alt.: 2016 CW53 | MPC · JPL |
| 0 | 2003 UF381 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2019 | 26 Sep 2019 | 47 | Disc.: SDSS Alt.: 2016 EK45 | MPC · JPL |
| 0 | 2003 UM381 | MBA-I | 18.3 | 650 m | multiple | 2003–2021 | 03 Oct 2021 | 89 | Disc.: SDSS Alt.: 2006 KM156, 2010 GU162, 2014 UT38 | MPC · JPL |
| 1 | 2003 UT381 | MBA-M | 18.2 | 960 m | multiple | 2003–2020 | 10 Dec 2020 | 51 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UU381 | MBA-O | 17.50 | 1.8 km | multiple | 2003–2021 | 18 Apr 2021 | 61 | Disc.: SDSS | MPC · JPL |
| – | 2003 UX381 | MBA-I | 20.5 | 240 m | single | 24 days | 24 Oct 2003 | 11 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UA382 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2020 | 19 Jan 2020 | 82 | Disc.: SDSS Alt.: 2011 SP126 | MPC · JPL |
| 0 | 2003 UE382 | MBA-I | 19.23 | 420 m | multiple | 1996–2021 | 08 Nov 2021 | 41 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ382 | MBA-I | 18.2 | 680 m | multiple | 2000–2021 | 18 Jan 2021 | 79 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 US382 | MBA-M | 16.7 | 2.5 km | multiple | 2001–2021 | 11 Oct 2021 | 215 | Disc.: SDSS Alt.: 2010 JS144 | MPC · JPL |
| 0 | 2003 UX382 | MBA-M | 18.47 | 600 m | multiple | 2003–2021 | 17 Jan 2021 | 58 | Disc.: SDSS Added on 11 May 2021 Alt.: 2009 DK103, 2020 YC8 | MPC · JPL |
| 2 | 2003 UY382 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 27 Jan 2020 | 101 | Disc.: LONEOS Alt.: 2003 TH59, 2019 SS11 | MPC · JPL |
| – | 2003 UA383 | MBA-M | 19.8 | 330 m | single | 4 days | 23 Oct 2003 | 6 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UE383 | MBA-I | 19.23 | 420 m | multiple | 2003–2021 | 06 Nov 2021 | 44 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UJ383 | MBA-I | 18.8 | 520 m | multiple | 1996–2020 | 13 Sep 2020 | 46 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UP383 | MBA-I | 18.5 | 590 m | multiple | 2003–2020 | 12 Jul 2020 | 50 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UT383 | MBA-M | 16.7 | 1.4 km | multiple | 2003–2021 | 05 Jan 2021 | 149 | Disc.: SDSS Alt.: 2005 AT36, 2008 YV3 | MPC · JPL |
| 0 | 2003 UU383 | MBA-M | 18.7 | 540 m | multiple | 2003–2020 | 24 Dec 2020 | 34 | Disc.: SDSS Alt.: 2007 RP198 | MPC · JPL |
| 0 | 2003 UV383 | MBA-M | 18.44 | 1.1 km | multiple | 2003–2021 | 24 Nov 2021 | 65 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX383 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 18 Dec 2020 | 109 | Disc.: SDSS Alt.: 2014 WR250, 2016 CD237 | MPC · JPL |
| 0 | 2003 UB384 | MBA-O | 17.5 | 1.8 km | multiple | 2003–2021 | 04 Jan 2021 | 37 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UC384 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 25 Oct 2020 | 30 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD384 | MBA-M | 19.0 | 670 m | multiple | 2003–2020 | 07 Nov 2020 | 36 | Disc.: SDSS Alt.: 2020 PW33 | MPC · JPL |
| 0 | 2003 UE384 | MBA-M | 17.6 | 1.7 km | multiple | 2003–2020 | 22 Apr 2020 | 31 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UF384 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 17 Oct 2020 | 83 | Disc.: SDSS Alt.: 2014 RR14 | MPC · JPL |
| 0 | 2003 UK384 | MBA-M | 18.5 | 840 m | multiple | 2003–2020 | 18 Oct 2020 | 51 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UL384 | MBA-M | 17.44 | 1.4 km | multiple | 2003–2022 | 27 Jan 2022 | 93 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UM384 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2020 | 21 Jan 2020 | 64 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UN384 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2020 | 12 Sep 2020 | 79 | Disc.: SDSS | MPC · JPL |
| – | 2003 UP384 | MBA-I | 19.8 | 330 m | single | 4 days | 23 Oct 2003 | 6 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 US384 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2019 | 26 Nov 2019 | 37 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 UX384 | MBA-M | 18.4 | 1.2 km | multiple | 2003–2017 | 09 Dec 2017 | 26 | Disc.: SDSS Alt.: 2017 XB47 | MPC · JPL |
| 0 | 2003 UZ384 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2021 | 16 Jan 2021 | 42 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UC385 | HIL | 16.9 | 2.3 km | multiple | 2003–2019 | 24 Dec 2019 | 37 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 UF385 | MBA-O | 18.1 | 1.3 km | multiple | 2003–2018 | 03 Nov 2018 | 42 | Disc.: SDSS Alt.: 2008 UE86 | MPC · JPL |
| 0 | 2003 UG385 | MBA-M | 17.4 | 980 m | multiple | 2003–2021 | 22 Jan 2021 | 114 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UJ385 | MBA-M | 17.8 | 820 m | multiple | 2003–2020 | 17 Dec 2020 | 24 | Disc.: SDSS Alt.: 2007 RA255 | MPC · JPL |
| 0 | 2003 UL385 | MBA-M | 18.3 | 650 m | multiple | 2003–2019 | 28 Oct 2019 | 42 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UO385 | MBA-M | 19.0 | 670 m | multiple | 2003–2020 | 14 Nov 2020 | 28 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UT385 | MBA-M | 17.47 | 1.8 km | multiple | 2003–2021 | 13 Jul 2021 | 64 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UV385 | MBA-M | 17.68 | 1.6 km | multiple | 2003–2021 | 06 Nov 2021 | 60 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UX385 | MBA-M | 17.79 | 1.2 km | multiple | 2003–2021 | 07 Nov 2021 | 45 | Disc.: SDSS Added on 13 September 2020 | MPC · JPL |
| 0 | 2003 UZ385 | MBA-I | 18.36 | 630 m | multiple | 2001–2021 | 28 Sep 2021 | 67 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UF386 | HUN | 18.5 | 590 m | multiple | 2003–2020 | 11 Dec 2020 | 63 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UJ386 | MBA-M | 18.30 | 1.2 km | multiple | 2003–2021 | 06 Oct 2021 | 48 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UL386 | MBA-M | 17.90 | 1.1 km | multiple | 2003–2021 | 26 Nov 2021 | 43 | Disc.: SDSS Alt.: 2012 UA52, 2014 DH90 | MPC · JPL |
| 0 | 2003 UM386 | MBA-M | 17.8 | 820 m | multiple | 2003–2021 | 09 Jan 2021 | 66 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UO386 | MBA-O | 16.07 | 3.4 km | multiple | 2003–2021 | 10 Nov 2021 | 72 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ386 | MBA-O | 17.7 | 1.6 km | multiple | 2003–2020 | 27 Jan 2020 | 36 | Disc.: SDSS Added on 22 July 2020 Alt.: 2015 AT228 | MPC · JPL |
| 0 | 2003 US386 | MBA-I | 19.43 | 390 m | multiple | 2003–2022 | 25 Jan 2022 | 69 | Disc.: SDSS Alt.: 2010 TV124 | MPC · JPL |
| 1 | 2003 UU386 | MBA-M | 18.9 | 490 m | multiple | 2003–2019 | 28 Nov 2019 | 50 | Disc.: SDSS Alt.: 2007 TN340 | MPC · JPL |
| 0 | 2003 UW386 | MBA-M | 18.62 | 560 m | multiple | 2003–2021 | 15 Apr 2021 | 50 | Disc.: SDSS Added on 22 July 2020 Alt.: 2017 FW131 | MPC · JPL |
| 0 | 2003 UA387 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2019 | 03 Oct 2019 | 62 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD387 | MBA-I | 19.3 | 410 m | multiple | 2003–2020 | 19 Oct 2020 | 24 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UF387 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 04 Jan 2021 | 124 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UK387 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2019 | 08 Nov 2019 | 116 | Disc.: SDSS Alt.: 2014 WW422 | MPC · JPL |
| 0 | 2003 UL387 | MBA-O | 17.18 | 2.0 km | multiple | 2003–2021 | 28 Nov 2021 | 38 | Disc.: SDSS Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 UM387 | MBA-O | 16.18 | 3.2 km | multiple | 2003–2021 | 08 Dec 2021 | 145 | Disc.: SDSS Alt.: 2010 BX25 | MPC · JPL |
| 0 | 2003 UP387 | MBA-M | 17.98 | 1.4 km | multiple | 2003–2021 | 10 Nov 2021 | 45 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ387 | MBA-I | 18.47 | 600 m | multiple | 2003–2022 | 26 Jan 2022 | 53 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR387 | MBA-I | 18.6 | 570 m | multiple | 2003–2020 | 12 Sep 2020 | 66 | Disc.: SDSS Alt.: 2015 BJ478 | MPC · JPL |
| 0 | 2003 UV387 | MBA-M | 17.14 | 2.1 km | multiple | 2003–2021 | 28 Oct 2021 | 42 | Disc.: SDSS Added on 30 September 2021 | MPC · JPL |
| 0 | 2003 UX387 | MBA-M | 18.0 | 1.1 km | multiple | 2003–2020 | 17 Sep 2020 | 64 | Disc.: Kitt Peak Obs. Alt.: 2018 FV22 | MPC · JPL |
| 0 | 2003 UZ387 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2019 | 26 Nov 2019 | 25 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 2 | 2003 UA388 | MBA-I | 19.4 | 390 m | multiple | 2003–2019 | 28 Nov 2019 | 18 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UB388 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 06 Jan 2021 | 93 | Disc.: SDSS Alt.: 2015 XC127 | MPC · JPL |
| 0 | 2003 UE388 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2019 | 28 Nov 2019 | 130 | Disc.: Spacewatch Alt.: 2010 EZ26, 2016 AN162, 2017 HL34 | MPC · JPL |
| 0 | 2003 UK388 | MBA-I | 18.83 | 510 m | multiple | 2003–2021 | 10 Nov 2021 | 49 | Disc.: SDSS Added on 22 July 2020 Alt.: 2014 WX458 | MPC · JPL |
| 0 | 2003 UL388 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 18 Jan 2021 | 96 | Disc.: SDSS Alt.: 2014 WL108 | MPC · JPL |
| 1 | 2003 UP388 | MBA-M | 18.26 | 940 m | multiple | 2003–2021 | 08 Dec 2021 | 46 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 US388 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2020 | 14 Dec 2020 | 54 | Disc.: Spacewatch Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UU388 | MBA-I | 18.80 | 520 m | multiple | 2003–2021 | 27 Nov 2021 | 55 | Disc.: Spacewatch Added on 5 November 2021 Alt.: 2021 RB70 | MPC · JPL |
| 0 | 2003 UZ388 | MBA-I | 18.59 | 570 m | multiple | 2003–2021 | 08 Sep 2021 | 48 | Disc.: SDSS Alt.: 2014 SL134 | MPC · JPL |
| 0 | 2003 UA389 | MBA-M | 16.71 | 2.5 km | multiple | 1994–2021 | 30 Oct 2021 | 199 | Disc.: SDSS Alt.: 2006 GG6, 2007 MM10, 2015 DS152 | MPC · JPL |
| 0 | 2003 UB389 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 04 Jan 2021 | 76 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD389 | MBA-O | 17.2 | 2.0 km | multiple | 2001–2020 | 07 Dec 2020 | 68 | Disc.: SDSS Alt.: 2014 RA14 | MPC · JPL |
| 0 | 2003 UE389 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2019 | 29 Oct 2019 | 68 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 UF389 | MBA-M | 18.6 | 800 m | multiple | 2003–2020 | 20 Oct 2020 | 37 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UG389 | MBA-M | 17.91 | 1.5 km | multiple | 2003–2021 | 06 Oct 2021 | 55 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UH389 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2020 | 10 Dec 2020 | 52 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UL389 | MBA-M | 18.43 | 1.1 km | multiple | 2003–2021 | 08 Sep 2021 | 54 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UQ389 | MBA-M | 17.78 | 1.5 km | multiple | 2003–2021 | 09 Sep 2021 | 63 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR389 | MBA-I | 17.7 | 860 m | multiple | 2003–2020 | 23 Jan 2020 | 76 | Disc.: SDSS Added on 22 July 2020 Alt.: 2007 VU377 | MPC · JPL |
| 0 | 2003 UT389 | MBA-O | 17.28 | 1.9 km | multiple | 2003–2021 | 11 Nov 2021 | 35 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UY389 | MBA-O | 16.97 | 2.2 km | multiple | 2003–2021 | 30 Jul 2021 | 141 | Disc.: SDSS Alt.: 2017 PV9, 2017 RK79 | MPC · JPL |
| 1 | 2003 UA390 | MBA-M | 18.50 | 1.1 km | multiple | 2003–2021 | 31 Oct 2021 | 37 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UF390 | MBA-M | 17.2 | 1.5 km | multiple | 1999–2021 | 06 Jan 2021 | 130 | Disc.: SDSS Alt.: 2015 OJ55, 2017 BE61 | MPC · JPL |
| 0 | 2003 UL390 | MBA-I | 18.70 | 540 m | multiple | 2003–2021 | 10 Feb 2021 | 54 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UM390 | MBA-I | 17.85 | 800 m | multiple | 2003–2021 | 11 May 2021 | 80 | Disc.: SDSS Alt.: 2013 EV8 | MPC · JPL |
| 1 | 2003 UN390 | MBA-M | 18.9 | 490 m | multiple | 2003–2015 | 03 Oct 2015 | 29 | Disc.: SDSS Alt.: 2015 PV79 | MPC · JPL |
| 0 | 2003 UP390 | MBA-M | 17.84 | 1.1 km | multiple | 2003–2022 | 06 Jan 2022 | 59 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ390 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2021 | 19 Mar 2021 | 48 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR390 | MBA-I | 18.9 | 490 m | multiple | 2003–2019 | 06 Jul 2019 | 28 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 1 | 2003 US390 | MBA-O | 17.7 | 1.6 km | multiple | 2003–2019 | 21 Oct 2019 | 21 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX390 | MBA-I | 18.9 | 490 m | multiple | 2003–2020 | 08 Dec 2020 | 39 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UY390 | MBA-O | 16.80 | 2.4 km | multiple | 2003–2022 | 07 Jan 2022 | 142 | Disc.: SDSS Alt.: 2010 DA69, 2014 QL292 | MPC · JPL |
| 0 | 2003 UZ390 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2020 | 20 Oct 2020 | 35 | Disc.: SDSS Added on 17 June 2021 Alt.: 2020 SO62 | MPC · JPL |
| 0 | 2003 UB391 | MBA-I | 18.5 | 590 m | multiple | 2003–2020 | 16 Sep 2020 | 77 | Disc.: SDSS Added on 24 August 2020 | MPC · JPL |
| 0 | 2003 UC391 | MBA-M | 17.9 | 780 m | multiple | 2003–2020 | 18 Dec 2020 | 36 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UE391 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 22 Mar 2020 | 64 | Disc.: SDSS Alt.: 2013 YN103 | MPC · JPL |
| 0 | 2003 UP391 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 10 Jan 2021 | 94 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UV391 | MBA-M | 17.9 | 780 m | multiple | 2003–2019 | 28 Sep 2019 | 47 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UY391 | MBA-M | 18.3 | 1.2 km | multiple | 2003–2018 | 05 Jan 2018 | 63 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UZ391 | MBA-I | 18.3 | 650 m | multiple | 2003–2020 | 05 Mar 2020 | 45 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 UC392 | MBA-I | 18.8 | 520 m | multiple | 2003–2021 | 30 Nov 2021 | 39 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD392 | MBA-O | 17.48 | 1.8 km | multiple | 2003–2021 | 15 Apr 2021 | 48 | Disc.: SDSS Alt.: 2015 AJ172 | MPC · JPL |
| 0 | 2003 UN392 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2020 | 08 Dec 2020 | 108 | Disc.: SDSS Alt.: 2008 SZ69 | MPC · JPL |
| 0 | 2003 UO392 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2019 | 24 Dec 2019 | 58 | Disc.: SDSS Added on 11 May 2021 Alt.: 2014 WQ327 | MPC · JPL |
| 2 | 2003 UP392 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2019 | 26 Nov 2019 | 28 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR392 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2019 | 28 Sep 2019 | 25 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UT392 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 17 Nov 2020 | 40 | Disc.: SDSS Added on 17 January 2021 Alt.: 2014 SV201 | MPC · JPL |
| – | 2003 UU392 | MBA-O | 17.9 | 1.5 km | single | 2 days | 24 Oct 2003 | 6 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UA393 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2018 | 12 Oct 2018 | 54 | Disc.: SDSS | MPC · JPL |
| 4 | 2003 UC393 | MBA-M | 18.2 | 960 m | multiple | 2003–2011 | 01 Aug 2011 | 18 | Disc.: Kitt Peak Obs. Alt.: 2011 OM47 | MPC · JPL |
| 3 | 2003 UD393 | MBA-M | 19.0 | 470 m | multiple | 2003–2019 | 29 Oct 2019 | 41 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UE393 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2019 | 03 Nov 2019 | 53 | Disc.: SDSS Added on 22 July 2020 Alt.: 2008 TE81 | MPC · JPL |
| 0 | 2003 UF393 | MBA-I | 18.29 | 650 m | multiple | 2003–2021 | 01 Oct 2021 | 56 | Disc.: SDSS Alt.: 2014 WP253 | MPC · JPL |
| 0 | 2003 UH393 | MBA-O | 16.91 | 2.3 km | multiple | 2003–2022 | 26 Jan 2022 | 63 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UL393 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2021 | 07 Jun 2021 | 87 | Disc.: SDSS Alt.: 2010 HN37, 2015 AL250 | MPC · JPL |
| 0 | 2003 UO393 | MBA-M | 18.4 | 620 m | multiple | 2001–2016 | 23 Dec 2016 | 54 | Disc.: SDSS Alt.: 2011 RY4 | MPC · JPL |
| 0 | 2003 UQ393 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 15 Jan 2021 | 40 | Disc.: SDSS | MPC · JPL |
| 4 | 2003 US393 | MBA-O | 17.8 | 1.5 km | multiple | 2003–2018 | 07 Sep 2018 | 17 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UV393 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2020 | 16 Oct 2020 | 47 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX393 | MBA-I | 18.6 | 570 m | multiple | 2003–2020 | 27 Jun 2020 | 40 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UC394 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 17 Oct 2020 | 62 | Disc.: SDSS Alt.: 2014 SB23 | MPC · JPL |
| 0 | 2003 UH394 | MBA-M | 17.4 | 980 m | multiple | 2003–2021 | 05 Jan 2021 | 78 | Disc.: SDSS Alt.: 2009 DY71, 2017 BY12 | MPC · JPL |
| 0 | 2003 UQ394 | MBA-O | 17.08 | 2.1 km | multiple | 2003–2022 | 26 Jan 2022 | 70 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UT394 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 11 Dec 2020 | 27 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UY394 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2020 | 27 Jan 2020 | 44 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UZ394 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2021 | 09 Jan 2021 | 37 | Disc.: SDSS Alt.: 2014 WB317 | MPC · JPL |
| 0 | 2003 UA395 | MBA-O | 17.49 | 1.8 km | multiple | 2003–2021 | 20 Mar 2021 | 71 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UB395 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2020 | 20 Nov 2020 | 110 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UC395 | MBA-O | 17.18 | 2.0 km | multiple | 2001–2019 | 20 Dec 2019 | 42 | Disc.: SDSS Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 UE395 | MBA-M | 17.9 | 1.1 km | multiple | 2003–2020 | 07 Dec 2020 | 68 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UH395 | MBA-O | 17.39 | 1.9 km | multiple | 2003–2021 | 14 Apr 2021 | 54 | Disc.: SDSS Alt.: 2016 GG189 | MPC · JPL |
| 2 | 2003 UL395 | MBA-M | 18.1 | 710 m | multiple | 2003–2019 | 29 Oct 2019 | 18 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UO395 | MBA-M | 17.16 | 2.1 km | multiple | 2001–2021 | 02 Dec 2021 | 99 | Disc.: SDSS Alt.: 2006 KL75, 2014 DS28 | MPC · JPL |
| 0 | 2003 UQ395 | MBA-M | 17.9 | 780 m | multiple | 2001–2021 | 12 Jan 2021 | 56 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UR395 | MBA-M | 17.0 | 1.2 km | multiple | 2003–2021 | 04 Jan 2021 | 73 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD396 | MBA-I | 17.4 | 980 m | multiple | 1994–2020 | 14 Sep 2020 | 81 | Disc.: SDSS Added on 13 September 2020 | MPC · JPL |
| 2 | 2003 UK396 | MBA-M | 19.1 | 450 m | multiple | 2003–2019 | 19 Dec 2019 | 79 | Disc.: SDSS Alt.: 2015 TB141 | MPC · JPL |
| 0 | 2003 UL396 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 23 Jan 2020 | 66 | Disc.: SDSS Alt.: 2010 AK142 | MPC · JPL |
| 0 | 2003 UO396 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 06 Jan 2021 | 45 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ396 | MBA-M | 17.9 | 1.1 km | multiple | 2003–2020 | 17 Nov 2020 | 25 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 2 | 2003 UV396 | MBA-M | 19.4 | 550 m | multiple | 2003–2016 | 25 Oct 2016 | 15 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UW396 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 06 Jan 2021 | 87 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UA397 | MBA-M | 17.5 | 940 m | multiple | 2003–2020 | 16 Dec 2020 | 41 | Disc.: SDSS Added on 9 March 2021 | MPC · JPL |
| 0 | 2003 UB397 | MBA-O | 16.34 | 3.0 km | multiple | 2003–2022 | 05 Jan 2022 | 110 | Disc.: SDSS Alt.: 2014 QK291, 2016 AJ82 | MPC · JPL |
| 0 | 2003 UC397 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2020 | 26 Jan 2020 | 136 | Disc.: SDSS Alt.: 2008 QW22 | MPC · JPL |
| 0 | 2003 UD397 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2020 | 21 Oct 2020 | 63 | Disc.: SDSS Alt.: 2015 LL16 | MPC · JPL |
| 0 | 2003 UF397 | MBA-M | 17.3 | 1.0 km | multiple | 2003–2020 | 21 Dec 2020 | 93 | Disc.: SDSS Alt.: 2011 QE20 | MPC · JPL |
| 0 | 2003 UL397 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 07 Jun 2021 | 115 | Disc.: SDSS Alt.: 2005 EB350, 2015 BH423 | MPC · JPL |
| 0 | 2003 UM397 | MBA-M | 17.8 | 1.2 km | multiple | 2003–2021 | 07 Jan 2021 | 65 | Disc.: SDSS Alt.: 2009 DD38 | MPC · JPL |
| 2 | 2003 UN397 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 06 Dec 2020 | 42 | Disc.: SDSS Added on 11 May 2021 Alt.: 2009 XC30 | MPC · JPL |
| 0 | 2003 UV397 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2019 | 24 Dec 2019 | 47 | Disc.: SDSS Alt.: 2010 AL52 | MPC · JPL |
| 0 | 2003 UX397 | MBA-M | 17.4 | 980 m | multiple | 2003–2021 | 17 Jan 2021 | 41 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UY397 | MBA-M | 18.0 | 1.1 km | multiple | 2003–2020 | 20 Dec 2020 | 41 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UZ397 | MBA-O | 16.21 | 3.2 km | multiple | 2003–2022 | 27 Jan 2022 | 187 | Disc.: SDSS Alt.: 2008 PD14, 2010 EG167 | MPC · JPL |
| 0 | 2003 UA398 | MBA-M | 17.89 | 1.5 km | multiple | 2003–2021 | 04 Dec 2021 | 51 | Disc.: SDSS Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 UB398 | MBA-O | 16.55 | 2.7 km | multiple | 2003–2021 | 03 May 2021 | 137 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UD398 | MBA-O | 15.97 | 3.6 km | multiple | 2003–2022 | 08 Jan 2022 | 202 | Disc.: SDSS Alt.: 2010 DA24 | MPC · JPL |
| 0 | 2003 UF398 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 08 Dec 2020 | 74 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UG398 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 07 Dec 2020 | 40 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UK398 | MCA | 19.08 | 450 m | multiple | 2003–2021 | 29 Nov 2021 | 31 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UN398 | MBA-M | 17.6 | 900 m | multiple | 2003–2021 | 07 Jan 2021 | 64 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UR398 | MBA-M | 18.2 | 960 m | multiple | 2003–2020 | 14 Sep 2020 | 39 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UT398 | MBA-O | 17.0 | 2.2 km | multiple | 2003–2021 | 15 Jan 2021 | 48 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 1 | 2003 UV398 | MBA-M | 18.5 | 590 m | multiple | 2003–2019 | 26 Sep 2019 | 41 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UY398 | MBA-M | 18.34 | 1.2 km | multiple | 2003–2021 | 23 Nov 2021 | 35 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UA399 | MBA-M | 16.57 | 2.7 km | multiple | 2003–2021 | 03 Dec 2021 | 264 | Disc.: SDSS Alt.: 2011 OX51, 2015 DN210 | MPC · JPL |
| 1 | 2003 UB399 | MBA-M | 17.8 | 1.2 km | multiple | 2003–2021 | 04 Jan 2021 | 60 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UH399 | MBA-M | 18.0 | 1.1 km | multiple | 2003–2021 | 05 Jan 2021 | 38 | Disc.: SDSS Added on 11 May 2021 Alt.: 2013 AL176 | MPC · JPL |
| 0 | 2003 UJ399 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 04 Jan 2021 | 122 | Disc.: SDSS Alt.: 2010 CX267 | MPC · JPL |
| 0 | 2003 UQ399 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2020 | 14 Sep 2020 | 62 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UW399 | MBA-M | 17.23 | 1.5 km | multiple | 2003–2022 | 25 Jan 2022 | 165 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UN400 | MBA-M | 17.00 | 1.7 km | multiple | 1995–2021 | 30 Nov 2021 | 140 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UT400 | MBA-M | 17.3 | 1.0 km | multiple | 2003–2020 | 08 Dec 2020 | 59 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX400 | MBA-M | 17.20 | 1.5 km | multiple | 2003–2021 | 30 Nov 2021 | 106 | Disc.: SDSS Alt.: 2015 KE5, 2016 QV57 | MPC · JPL |
| 0 | 2003 UF401 | MBA-M | 17.08 | 1.1 km | multiple | 2003–2022 | 26 Jan 2022 | 61 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UL401 | MBA-I | 19.0 | 470 m | multiple | 2003–2017 | 14 Sep 2017 | 32 | Disc.: SDSS Added on 17 January 2021 Alt.: 2017 PW15 | MPC · JPL |
| 1 | 2003 UM401 | MBA-M | 18.2 | 960 m | multiple | 2003–2020 | 15 Oct 2020 | 99 | Disc.: SDSS Added on 17 January 2021 Alt.: 2016 SH69 | MPC · JPL |
| – | 2003 UR401 | MBA-M | 19.4 | 390 m | single | 36 days | 24 Oct 2003 | 13 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UV401 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2019 | 02 Dec 2019 | 30 | Disc.: SDSS | MPC · JPL |
| 4 | 2003 UW401 | MBA-M | 18.4 | 880 m | multiple | 2003–2012 | 10 Dec 2012 | 16 | Disc.: LPL/Spacewatch II Added on 5 November 2021 Alt.: 2012 XV174 | MPC · JPL |
| 1 | 2003 UX401 | MBA-O | 17.5 | 1.8 km | multiple | 2003–2020 | 08 Dec 2020 | 65 | Disc.: SDSS Alt.: 2010 CL262 | MPC · JPL |
| – | 2003 UJ402 | MBA-I | 19.6 | 360 m | single | 36 days | 24 Oct 2003 | 9 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ402 | MBA-I | 18.92 | 490 m | multiple | 2003–2021 | 09 Dec 2021 | 61 | Disc.: Kitt Peak Obs. Alt.: 2006 KB138 | MPC · JPL |
| 3 | 2003 UW402 | MBA-I | 19.0 | 470 m | multiple | 2003–2014 | 19 Sep 2014 | 36 | Disc.: SDSS Alt.: 2014 RJ39 | MPC · JPL |
| 1 | 2003 UZ402 | MBA-I | 19.0 | 470 m | multiple | 2003–2018 | 17 Nov 2018 | 44 | Disc.: SDSS Alt.: 2014 QS228 | MPC · JPL |
| 0 | 2003 UF403 | MBA-I | 18.9 | 490 m | multiple | 2003–2018 | 10 Nov 2018 | 39 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UG403 | MBA-O | 17.31 | 2.8 km | multiple | 2003–2022 | 27 Jan 2022 | 81 | Disc.: SDSS Alt.: 2010 CP229, 2011 EB11 | MPC · JPL |
| 2 | 2003 UM403 | MBA-I | 18.9 | 490 m | multiple | 2003–2018 | 18 Aug 2018 | 27 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UN403 | MBA-M | 18.9 | 490 m | multiple | 2003–2019 | 15 Jun 2019 | 36 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UO403 | MBA-M | 18.62 | 790 m | multiple | 2003–2020 | 17 Oct 2020 | 34 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR403 | MBA-I | 19.3 | 410 m | multiple | 2003–2020 | 16 Nov 2020 | 43 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 4 | 2003 UT403 | MBA-M | 18.9 | 490 m | multiple | 2003–2020 | 19 Dec 2020 | 17 | Disc.: SDSS | MPC · JPL |
| – | 2003 UV403 | MBA-I | 19.7 | 340 m | single | 28 days | 24 Oct 2003 | 8 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UY403 | MBA-O | 16.71 | 2.5 km | multiple | 2003–2021 | 03 Dec 2021 | 96 | Disc.: SDSS Alt.: 2009 SH88 | MPC · JPL |
| 3 | 2003 UJ404 | MBA-M | 18.6 | 570 m | multiple | 2003–2020 | 22 Nov 2020 | 14 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UL404 | MBA-M | 17.72 | 1.2 km | multiple | 2003–2021 | 12 Nov 2021 | 67 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UO404 | MBA-I | 18.3 | 650 m | multiple | 2003–2018 | 09 Nov 2018 | 39 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UP404 | MBA-M | 19.5 | 530 m | multiple | 2003–2016 | 20 Oct 2016 | 24 | Disc.: SDSS Alt.: 2016 QO100 | MPC · JPL |
| 0 | 2003 US404 | MBA-M | 17.9 | 1.1 km | multiple | 2003–2020 | 17 Oct 2020 | 34 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UY404 | MBA-M | 17.6 | 900 m | multiple | 2003–2021 | 18 Jan 2021 | 87 | Disc.: SDSS Alt.: 2015 UK38, 2017 BE27 | MPC · JPL |
| 0 | 2003 UA405 | MBA-M | 17.73 | 1.6 km | multiple | 2003–2021 | 01 Nov 2021 | 80 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UB405 | MBA-I | 18.73 | 530 m | multiple | 2003–2021 | 14 Sep 2021 | 43 | Disc.: SDSS Added on 30 September 2021 Alt.: 2021 PQ44 | MPC · JPL |
| 0 | 2003 UG405 | MBA-M | 17.0 | 1.2 km | multiple | 1998–2019 | 25 Nov 2019 | 165 | Disc.: SDSS Alt.: 2007 RM132, 2011 SM252, 2014 HP143 | MPC · JPL |
| 0 | 2003 UL405 | MBA-O | 16.71 | 2.5 km | multiple | 2003–2022 | 07 Jan 2022 | 154 | Disc.: Spacewatch Alt.: 2010 DN31, 2016 AG154 | MPC · JPL |
| 3 | 2003 UM405 | MBA-I | 18.8 | 520 m | multiple | 2003–2020 | 16 Nov 2020 | 39 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UN405 | MBA-I | 19.18 | 430 m | multiple | 2003–2021 | 10 Nov 2021 | 79 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UP405 | MBA-M | 17.28 | 1.9 km | multiple | 2003–2021 | 30 Nov 2021 | 131 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UT405 | MBA-I | 19.4 | 390 m | multiple | 2003–2020 | 10 Dec 2020 | 19 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UU405 | MBA-I | 18.99 | 470 m | multiple | 2003–2021 | 13 Jul 2021 | 35 | Disc.: SDSS Added on 17 January 2021 Alt.: 2012 BC78, 2018 VG124 | MPC · JPL |
| 0 | 2003 UV405 | MBA-I | 17.80 | 820 m | multiple | 1993–2021 | 01 Jul 2021 | 144 | Disc.: Spacewatch Alt.: 1993 BQ8, 2007 VF251, 2014 OZ131, 2015 YZ8 | MPC · JPL |
| 0 | 2003 UX405 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2021 | 06 Jan 2021 | 99 | Disc.: SDSS Alt.: 2015 HY170 | MPC · JPL |
| 0 | 2003 UB406 | MBA-I | 18.1 | 710 m | multiple | 2003–2021 | 15 Jan 2021 | 91 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UC406 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 17 Jan 2021 | 88 | Disc.: SDSS Alt.: 2003 UG418, 2014 VV29 | MPC · JPL |
| 0 | 2003 UK406 | MBA-I | 18.91 | 490 m | multiple | 2003–2021 | 10 Jul 2021 | 30 | Disc.: SDSS Alt.: 2014 ST204 | MPC · JPL |
| 0 | 2003 UM406 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 05 Jan 2021 | 145 | Disc.: SDSS Alt.: 2010 BN115, 2014 QH361, 2015 XS120 | MPC · JPL |
| 0 | 2003 UQ406 | MBA-I | 18.49 | 600 m | multiple | 2003–2021 | 11 May 2021 | 78 | Disc.: SDSS Alt.: 2015 FS335 | MPC · JPL |
| 1 | 2003 UX406 | MBA-M | 18.01 | 1.4 km | multiple | 2003–2021 | 10 Nov 2021 | 52 | Disc.: SDSS | MPC · JPL |
| 2 | 2003 UB407 | MBA-I | 18.9 | 490 m | multiple | 2003–2020 | 18 Oct 2020 | 51 | Disc.: SDSS | MPC · JPL |
| 3 | 2003 UC407 | MBA-M | 18.2 | 960 m | multiple | 2003–2021 | 29 Nov 2021 | 33 | Disc.: SDSS Added on 29 January 2022 | MPC · JPL |
| 0 | 2003 UE407 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 17 Nov 2020 | 75 | Disc.: SDSS Added on 17 January 2021 Alt.: 2010 CB53, 2011 FD37 | MPC · JPL |
| 1 | 2003 UF407 | MBA-I | 19.1 | 450 m | multiple | 2003–2020 | 21 Sep 2020 | 47 | Disc.: SDSS Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 UM407 | MBA-M | 17.5 | 940 m | multiple | 2002–2019 | 28 Oct 2019 | 88 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UQ407 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2019 | 24 Oct 2019 | 25 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 US407 | MBA-M | 17.67 | 1.6 km | multiple | 2003–2021 | 09 Nov 2021 | 57 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UV407 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 11 Dec 2020 | 96 | Disc.: SDSS Alt.: 2014 WG386 | MPC · JPL |
| 0 | 2003 UW407 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 24 Oct 2020 | 79 | Disc.: SDSS Alt.: 2006 EG72 | MPC · JPL |
| 2 | 2003 UA408 | MBA-O | 18.0 | 1.4 km | multiple | 2003–2018 | 11 Aug 2018 | 32 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UB408 | MBA-I | 18.0 | 750 m | multiple | 2003–2020 | 24 Jun 2020 | 82 | Disc.: SDSS Alt.: 2017 QF60 | MPC · JPL |
| 0 | 2003 UC408 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2020 | 14 Sep 2020 | 45 | Disc.: SDSS Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 UJ408 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 17 Oct 2020 | 64 | Disc.: SDSS Alt.: 2011 CN5, 2015 XL119 | MPC · JPL |
| 0 | 2003 UK408 | MBA-M | 17.29 | 1.9 km | multiple | 2003–2021 | 26 Nov 2021 | 144 | Disc.: SDSS Alt.: 2007 OY8 | MPC · JPL |
| 0 | 2003 UM408 | MBA-M | 17.33 | 1.9 km | multiple | 2003–2021 | 06 Nov 2021 | 158 | Disc.: SDSS Alt.: 2006 DD220 | MPC · JPL |
| 0 | 2003 UN408 | MBA-O | 16.35 | 3.0 km | multiple | 2003–2021 | 01 Nov 2021 | 73 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UO408 | MBA-M | 18.85 | 950 m | multiple | 2003–2021 | 30 Nov 2021 | 77 | Disc.: SDSS Added on 5 November 2021 Alt.: 2012 UK237 | MPC · JPL |
| 2 | 2003 UP408 | MBA-O | 17.6 | 1.7 km | multiple | 2003–2020 | 16 Nov 2020 | 29 | Disc.: SDSS Added on 17 January 2021 Alt.: 2014 SY184 | MPC · JPL |
| 0 | 2003 UQ408 | MBA-M | 17.4 | 1.4 km | multiple | 2003–2020 | 08 Nov 2020 | 129 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 US408 | MBA-I | 18.6 | 570 m | multiple | 2003–2020 | 19 Aug 2020 | 51 | Disc.: SDSS Alt.: 2015 BT245 | MPC · JPL |
| 0 | 2003 UU408 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2020 | 15 Dec 2020 | 85 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UW408 | MBA-I | 17.4 | 980 m | multiple | 2001–2021 | 10 Jun 2021 | 157 | Disc.: SDSS Alt.: 2014 OH378, 2017 EY18 | MPC · JPL |
| 0 | 2003 UA409 | MBA-O | 17.10 | 2.1 km | multiple | 2003–2021 | 07 Jul 2021 | 69 | Disc.: SDSS Alt.: 2015 CT17 | MPC · JPL |
| 0 | 2003 UB409 | MBA-O | 16.48 | 2.8 km | multiple | 2003–2021 | 11 Apr 2021 | 144 | Disc.: SDSS Alt.: 2014 YV48 | MPC · JPL |
| 2 | 2003 UC409 | MBA-M | 18.3 | 650 m | multiple | 2003–2019 | 29 Oct 2019 | 27 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UD409 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2021 | 07 Feb 2021 | 23 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UG409 | MBA-M | 17.8 | 1.2 km | multiple | 2003–2021 | 06 Jan 2021 | 71 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 2 | 2003 UJ409 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2018 | 18 Aug 2018 | 15 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UM409 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2020 | 17 Nov 2020 | 77 | Disc.: SDSS Alt.: 2016 WE36 | MPC · JPL |
| 0 | 2003 UN409 | MBA-O | 17.30 | 1.9 km | multiple | 2003–2021 | 13 Apr 2021 | 33 | Disc.: SDSS Added on 17 June 2021 Alt.: 2019 TN33 | MPC · JPL |
| 0 | 2003 UT409 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2021 | 09 Jan 2021 | 40 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UW409 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2019 | 29 Nov 2019 | 67 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX409 | MBA-O | 17.84 | 1.5 km | multiple | 2003–2021 | 11 Feb 2021 | 34 | Disc.: SDSS Added on 21 August 2021 | MPC · JPL |
| 0 | 2003 UA410 | MBA-I | 18.40 | 620 m | multiple | 2003–2021 | 30 May 2021 | 49 | Disc.: SDSS Added on 22 July 2020 Alt.: 2011 WB63 | MPC · JPL |
| 0 | 2003 UD410 | MBA-M | 17.8 | 1.5 km | multiple | 2003–2021 | 27 Nov 2021 | 43 | Disc.: SDSS Added on 29 January 2022 | MPC · JPL |
| 3 | 2003 UF410 | MBA-M | 19.3 | 580 m | multiple | 2003–2020 | 16 Nov 2020 | 20 | Disc.: SDSS Added on 17 June 2021 Alt.: 2020 TY68 | MPC · JPL |
| 2 | 2003 UG410 | MBA-I | 19.0 | 470 m | multiple | 2003–2019 | 26 Nov 2019 | 49 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UH410 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2020 | 17 Oct 2020 | 51 | Disc.: SDSS Added on 11 May 2021 | MPC · JPL |
| 0 | 2003 UJ410 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 15 Jan 2021 | 37 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UK410 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2020 | 14 Dec 2020 | 78 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UM410 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2020 | 16 Oct 2020 | 54 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UO410 | MBA-I | 18.30 | 650 m | multiple | 2003–2021 | 25 Nov 2021 | 73 | Disc.: SDSS Added on 5 November 2021 Alt.: 2010 LG150, 2010 RY139 | MPC · JPL |
| 0 | 2003 UW410 | MBA-M | 17.53 | 1.7 km | multiple | 2003–2021 | 06 Nov 2021 | 91 | Disc.: SDSS Added on 19 October 2020 | MPC · JPL |
| 0 | 2003 UY410 | MBA-M | 17.48 | 1.8 km | multiple | 2003–2021 | 03 Aug 2021 | 77 | Disc.: SDSS Added on 17 January 2021 Alt.: 2003 UY446, 2017 VP2 | MPC · JPL |
| 0 | 2003 UA411 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 22 Apr 2020 | 50 | Disc.: SDSS Added on 22 July 2020 Alt.: 2015 DK126 | MPC · JPL |
| 0 | 2003 UC411 | MBA-M | 18.18 | 1.3 km | multiple | 2003–2021 | 27 Nov 2021 | 48 | Disc.: SDSS Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UD411 | MBA-O | 16.73 | 2.5 km | multiple | 2003–2022 | 27 Jan 2022 | 90 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UJ411 | MBA-O | 17.5 | 1.8 km | multiple | 2003–2020 | 09 Oct 2020 | 28 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UK411 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 14 Jan 2021 | 142 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UL411 | MBA-O | 16.64 | 2.6 km | multiple | 2003–2022 | 25 Jan 2022 | 102 | Disc.: SDSS Alt.: 2011 BG38, 2014 SN194, 2017 FR133 | MPC · JPL |
| 0 | 2003 UM411 | MBA-M | 19.1 | 640 m | multiple | 2003–2020 | 13 Aug 2020 | 18 | Disc.: SDSS Added on 21 August 2021 Alt.: 2013 AW43 | MPC · JPL |
| 0 | 2003 UU411 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 25 Mar 2020 | 47 | Disc.: SDSS Added on 22 July 2020 | MPC · JPL |
| 0 | 2003 UX411 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2021 | 04 Jan 2021 | 69 | Disc.: SDSS Added on 17 January 2021 | MPC · JPL |
| 0 | 2003 UY411 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2019 | 31 Oct 2019 | 100 | Disc.: SDSS Alt.: 2014 WX345 | MPC · JPL |
| 0 | 2003 UC412 | MBA-O | 16.5 | 2.8 km | multiple | 1995–2020 | 21 Apr 2020 | 98 | Disc.: SDSS Alt.: 2006 KH84, 2015 FU291 | MPC · JPL |
| 0 | 2003 UE412 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2021 | 13 Feb 2021 | 57 | Disc.: SDSS Added on 9 March 2021 Alt.: 2009 DW54, 2013 BR65 | MPC · JPL |
| 0 | 2003 UF412 | MBA-M | 17.51 | 1.8 km | multiple | 2003–2021 | 28 Oct 2021 | 81 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UG412 | MBA-M | 18.4 | 880 m | multiple | 2003–2020 | 20 Dec 2020 | 31 | Disc.: SDSS Added on 9 March 2021 | MPC · JPL |
| 0 | 2003 UN412 | MBA-M | 17.40 | 980 m | multiple | 2003–2021 | 30 Apr 2021 | 298 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR412 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2021 | 15 Jan 2021 | 78 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UM413 | MBA-M | 19.1 | 450 m | multiple | 2003–2021 | 17 Feb 2021 | 24 | Disc.: Kitt Peak Obs. Added on 5 November 2021 | MPC · JPL |
| 0 | 2003 UR413 | MBA-I | 18.2 | 680 m | multiple | 2003–2018 | 17 Nov 2018 | 33 | Disc.: Kitt Peak Obs. Alt.: 2014 SC258 | MPC · JPL |
| 0 | 2003 UV413 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2020 | 14 Dec 2020 | 43 | Disc.: Kitt Peak Obs. Added on 22 July 2020 | MPC · JPL |
| 2 | 2003 UA414 | TNO | 5.03 | 357 km | multiple | 2003–2021 | 25 Nov 2021 | 145 | Disc.: NEAT LoUTNOs, res · 2:9 | MPC · JPL |
| E | 2003 UC414 | TNO | 8.3 | 122 km | single | 58 days | 27 Dec 2003 | 19 | Disc.: Cerro Tololo Obs. LoUTNOs, centaur | MPC · JPL |
| 0 | 2003 UT414 | MBA-M | 17.57 | 910 m | multiple | 1995–2021 | 09 Apr 2021 | 122 | Disc.: LINEAR Alt.: 2015 RE121 | MPC · JPL |
| 0 | 2003 UX414 | HIL | 16.3 | 3.1 km | multiple | 2003–2021 | 18 Jan 2021 | 60 | Disc.: SDSS Alt.: 2011 VU2 | MPC · JPL |
| 2 | 2003 UF415 | MBA-I | 18.9 | 490 m | multiple | 2003–2020 | 16 Sep 2020 | 57 | Disc.: Tenagra II Obs. | MPC · JPL |
| 1 | 2003 UJ415 | MBA-I | 18.4 | 620 m | multiple | 2003–2016 | 30 Nov 2016 | 54 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UA416 | MBA-O | 16.6 | 2.7 km | multiple | 2001–2021 | 18 Jan 2021 | 89 | Disc.: Spacewatch II Alt.: 2006 HZ77 | MPC · JPL |
| 0 | 2003 UD416 | MBA-I | 18.7 | 540 m | multiple | 2003–2021 | 08 Nov 2021 | 68 | Disc.: Spacewatch Added on 29 January 2022 | MPC · JPL |
| 0 | 2003 UN416 | MBA-O | 16.9 | 2.3 km | multiple | 2003–2020 | 10 Dec 2020 | 84 | Disc.: SDSS Alt.: 2009 WX266, 2014 TB58 | MPC · JPL |
| 0 | 2003 UO416 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2021 | 18 Jan 2021 | 50 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UP416 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2019 | 22 Oct 2019 | 70 | Disc.: SDSS Alt.: 2011 CN71 | MPC · JPL |
| – | 2003 UQ416 | MBA-M | 19.6 | 360 m | single | 5 days | 24 Oct 2003 | 6 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UX416 | MBA-M | 17.74 | 1.6 km | multiple | 2003–2021 | 28 Sep 2021 | 61 | Disc.: SDSS Added on 30 September 2021 | MPC · JPL |
| 0 | 2003 UN417 | MBA-M | 18.25 | 940 m | multiple | 2003–2021 | 09 Dec 2021 | 26 | Disc.: Spacewatch Added on 21 August 2021 | MPC · JPL |
| 1 | 2003 UP417 | MBA-O | 17.5 | 1.8 km | multiple | 2003–2020 | 16 Nov 2020 | 33 | Disc.: SDSS Added on 17 January 2021 Alt.: 2014 SL78 | MPC · JPL |
| 0 | 2003 UC418 | MBA-I | 19.15 | 440 m | multiple | 2003–2021 | 07 Apr 2021 | 63 | Disc.: SDSS Alt.: 2003 UU379, 2016 WX10 | MPC · JPL |
| 0 | 2003 UL418 | MBA-I | 17.9 | 780 m | multiple | 2003–2020 | 17 Nov 2020 | 95 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UR418 | MBA-I | 18.00 | 750 m | multiple | 1994–2022 | 06 Jan 2022 | 112 | Disc.: SDSS | MPC · JPL |
| 1 | 2003 UT418 | MBA-M | 18.3 | 650 m | multiple | 2003–2021 | 16 Jan 2021 | 61 | Disc.: LINEAR Alt.: 2007 RZ135 | MPC · JPL |
| 2 | 2003 UZ418 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2020 | 23 Jan 2020 | 44 | Disc.: LPL/Spacewatch II Added on 24 December 2021 | MPC · JPL |
| 0 | 2003 UA419 | MBA-O | 17.17 | 2.0 km | multiple | 1998–2021 | 11 May 2021 | 99 | Disc.: Spacewatch Alt.: 2015 AA117 | MPC · JPL |
| 0 | 2003 UC419 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2021 | 06 Jan 2021 | 48 | Disc.: SDSS Alt.: 2014 WO150 | MPC · JPL |
| 0 | 2003 UG419 | MBA-M | 17.01 | 1.7 km | multiple | 1996–2022 | 25 Jan 2022 | 164 | Disc.: NEAT | MPC · JPL |
| 0 | 2003 UH419 | HUN | 18.4 | 620 m | multiple | 2003–2021 | 16 Jan 2021 | 105 | Disc.: NEAT | MPC · JPL |
| 0 | 2003 UJ419 | MCA | 18.8 | 730 m | multiple | 1999–2021 | 09 Jan 2021 | 89 | Disc.: LONEOS | MPC · JPL |
| 0 | 2003 UK419 | MBA-I | 18.08 | 720 m | multiple | 1992–2021 | 03 Aug 2021 | 54 | Disc.: NEAT | MPC · JPL |
| 0 | 2003 UL419 | MBA-I | 18.5 | 590 m | multiple | 1996–2021 | 18 Jan 2021 | 58 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UT419 | MBA-I | 17.79 | 820 m | multiple | 2003–2021 | 27 Sep 2021 | 133 | Disc.: Kitt Peak Obs. | MPC · JPL |
| 0 | 2003 UU419 | MBA-I | 18.0 | 750 m | multiple | 2003–2020 | 10 Sep 2020 | 102 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UA420 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2018 | 07 Nov 2018 | 89 | Disc.: SDSS Alt.: 2008 UP399 | MPC · JPL |
| 0 | 2003 UD420 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2021 | 06 Jun 2021 | 121 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UH420 | MBA-O | 16.78 | 2.5 km | multiple | 2003–2022 | 12 Jan 2022 | 80 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UJ420 | MBA-I | 18.64 | 560 m | multiple | 2003–2021 | 30 Sep 2021 | 104 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UK420 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2020 | 17 Nov 2020 | 119 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UL420 | MBA-O | 16.0 | 3.5 km | multiple | 2003–2021 | 12 Jun 2021 | 130 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UM420 | MBA-M | 17.20 | 2.0 km | multiple | 2003–2021 | 30 Oct 2021 | 142 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UQ420 | MBA-O | 16.91 | 2.3 km | multiple | 2003–2021 | 03 Apr 2021 | 78 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UR420 | MBA-I | 18.42 | 620 m | multiple | 2003–2021 | 14 Aug 2021 | 81 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UW420 | MBA-O | 16.1 | 3.4 km | multiple | 2003–2021 | 17 Jan 2021 | 119 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UZ420 | MBA-I | 18.3 | 650 m | multiple | 2003–2018 | 20 Jan 2018 | 72 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UB421 | MBA-M | 17.54 | 1.7 km | multiple | 2003–2021 | 03 Oct 2021 | 66 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UD421 | MBA-I | 18.3 | 650 m | multiple | 2003–2019 | 03 Jul 2019 | 76 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UE421 | MBA-I | 18.23 | 670 m | multiple | 1996–2021 | 25 Nov 2021 | 134 | Disc.: Spacewatch Alt.: 1996 TO29 | MPC · JPL |
| 0 | 2003 UF421 | MBA-M | 16.23 | 3.2 km | multiple | 2003–2021 | 31 Oct 2021 | 158 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UH421 | MBA-M | 16.8 | 1.3 km | multiple | 1991–2021 | 17 Jan 2021 | 126 | Disc.: Spacewatch Alt.: 2010 HG72, 2017 DD129 | MPC · JPL |
| 0 | 2003 UJ421 | MBA-O | 17.2 | 2.0 km | multiple | 2003–2020 | 23 Mar 2020 | 82 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UL421 | MBA-M | 17.50 | 1.3 km | multiple | 2003–2022 | 10 Jan 2022 | 79 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UN421 | MBA-I | 18.2 | 680 m | multiple | 1996–2021 | 12 Jan 2021 | 118 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UQ421 | MBA-I | 17.33 | 1.0 km | multiple | 2003–2021 | 31 Oct 2021 | 216 | Disc.: Spacewatch Alt.: 2016 CN14 | MPC · JPL |
| 0 | 2003 UR421 | MBA-M | 17.34 | 1.9 km | multiple | 2003–2021 | 03 Oct 2021 | 114 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UU421 | MBA-O | 16.47 | 2.8 km | multiple | 2003–2022 | 25 Jan 2022 | 111 | Disc.: Spacewatch Alt.: 2010 DY12 | MPC · JPL |
| 0 | 2003 UW421 | MBA-I | 17.6 | 900 m | multiple | 2003–2021 | 24 Jan 2021 | 80 | Disc.: Kitt Peak Obs. | MPC · JPL |
| 0 | 2003 UX421 | MBA-I | 18.68 | 550 m | multiple | 2003–2021 | 19 Feb 2021 | 107 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UY421 | MBA-I | 17.8 | 820 m | multiple | 2003–2021 | 11 Jun 2021 | 106 | Disc.: NEAT | MPC · JPL |
| 0 | 2003 UZ421 | MBA-M | 17.36 | 1.4 km | multiple | 2003–2022 | 20 Jan 2022 | 78 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UA422 | MBA-M | 17.7 | 860 m | multiple | 2003–2020 | 23 Dec 2020 | 70 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UC422 | MBA-I | 18.16 | 690 m | multiple | 2003–2022 | 25 Jan 2022 | 121 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UD422 | MBA-I | 18.19 | 680 m | multiple | 2003–2021 | 14 May 2021 | 67 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UE422 | MBA-M | 17.5 | 1.3 km | multiple | 2003–2020 | 06 Dec 2020 | 76 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UL422 | MBA-I | 18.1 | 710 m | multiple | 2003–2021 | 15 Jan 2021 | 132 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UM422 | MBA-O | 16.29 | 3.1 km | multiple | 2003–2022 | 07 Jan 2022 | 132 | Disc.: SDSS Alt.: 2010 CU223 | MPC · JPL |
| 0 | 2003 UP422 | MBA-M | 17.35 | 1.9 km | multiple | 2003–2021 | 09 Jul 2021 | 71 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UR422 | MBA-M | 17.36 | 1.9 km | multiple | 2003–2021 | 08 Sep 2021 | 78 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 US422 | MBA-I | 18.1 | 710 m | multiple | 2003–2021 | 15 Jan 2021 | 99 | Disc.: Spacewatch Alt.: 2011 BR8 | MPC · JPL |
| 0 | 2003 UV422 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2021 | 11 Jan 2021 | 105 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UX422 | MBA-I | 18.3 | 650 m | multiple | 2003–2020 | 24 Dec 2020 | 65 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UY422 | MBA-I | 18.7 | 540 m | multiple | 2003–2019 | 24 Aug 2019 | 70 | Disc.: SDSS | MPC · JPL |
| 0 | 2003 UA423 | MBA-I | 18.2 | 680 m | multiple | 2003–2020 | 09 Dec 2020 | 91 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UC423 | MBA-I | 17.7 | 860 m | multiple | 2003–2020 | 16 Nov 2020 | 86 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UE423 | MBA-M | 17.3 | 1.0 km | multiple | 2003–2020 | 20 Dec 2020 | 88 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UK423 | MBA-M | 17.1 | 1.6 km | multiple | 2003–2021 | 05 Jan 2021 | 91 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UM423 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2020 | 22 Dec 2020 | 79 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UQ423 | MBA-O | 16.2 | 3.2 km | multiple | 2003–2020 | 15 Dec 2020 | 105 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 US423 | MBA-O | 16.81 | 2.4 km | multiple | 2003–2022 | 27 Jan 2022 | 87 | Disc.: Kitt Peak Obs. | MPC · JPL |
| 0 | 2003 UT423 | MBA-I | 18.2 | 680 m | multiple | 2003–2021 | 14 Jan 2021 | 88 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UU423 | MBA-I | 18.3 | 650 m | multiple | 1996–2020 | 17 Oct 2020 | 121 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UV423 | MBA-I | 18.5 | 590 m | multiple | 2003–2019 | 04 Sep 2019 | 66 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UW423 | MBA-I | 18.2 | 680 m | multiple | 2003–2018 | 01 Nov 2018 | 54 | Disc.: Kitt Peak Obs. | MPC · JPL |
| 0 | 2003 UX423 | MBA-I | 18.1 | 710 m | multiple | 2003–2020 | 04 Dec 2020 | 72 | Disc.: Spacewatch II | MPC · JPL |
| 0 | 2003 UY423 | MBA-M | 17.58 | 1.7 km | multiple | 2003–2021 | 08 Sep 2021 | 84 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UZ423 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2020 | 13 May 2020 | 71 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UA424 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 10 Jan 2021 | 90 | Disc.: SDSS Alt.: 2016 BP54 | MPC · JPL |
| 0 | 2003 UB424 | MBA-M | 17.60 | 1.7 km | multiple | 2003–2021 | 30 Jul 2021 | 69 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UC424 | MBA-O | 16.7 | 2.5 km | multiple | 2003–2020 | 14 Dec 2020 | 87 | Disc.: Spacewatch Alt.: 2010 DN97 | MPC · JPL |
| 0 | 2003 UF424 | MBA-M | 17.48 | 1.8 km | multiple | 2003–2021 | 04 Oct 2021 | 71 | Disc.: Spacewatch | MPC · JPL |
| 0 | 2003 UH424 | MBA-O | 17.4 | 1.8 km | multiple | 2003–2020 | 22 Apr 2020 | 55 | Disc.: Kitt Peak Obs. | MPC · JPL |
| 0 | 2003 UK424 | MBA-M | 17.59 | 1.7 km | multiple | 2003–2021 | 03 Oct 2021 | 82 | — | MPC · JPL |
| 0 | 2003 UL424 | MBA-O | 16.77 | 2.5 km | multiple | 2003–2022 | 25 Jan 2022 | 82 | — | MPC · JPL |
| 0 | 2003 UM424 | MBA-M | 17.90 | 1.5 km | multiple | 2003–2021 | 06 Oct 2021 | 102 | — | MPC · JPL |
| 0 | 2003 UN424 | MBA-O | 16.63 | 2.6 km | multiple | 2003–2022 | 26 Jan 2022 | 88 | — | MPC · JPL |
| 0 | 2003 UO424 | MBA-M | 17.60 | 1.7 km | multiple | 2003–2021 | 09 Oct 2021 | 88 | — | MPC · JPL |
| 0 | 2003 UP424 | MBA-I | 18.2 | 680 m | multiple | 2003–2019 | 27 Oct 2019 | 130 | — | MPC · JPL |
| 0 | 2003 US424 | MBA-M | 17.7 | 1.2 km | multiple | 2003–2020 | 21 Oct 2020 | 144 | — | MPC · JPL |
| 0 | 2003 UU424 | MBA-M | 17.3 | 1.5 km | multiple | 2003–2021 | 07 Jan 2021 | 102 | — | MPC · JPL |
| 0 | 2003 UW424 | MBA-M | 17.5 | 940 m | multiple | 2003–2021 | 15 Jan 2021 | 104 | — | MPC · JPL |
| 0 | 2003 UY424 | MBA-O | 16.50 | 2.8 km | multiple | 2003–2022 | 27 Jan 2022 | 119 | Alt.: 2010 DH20 | MPC · JPL |
| 0 | 2003 UA425 | MBA-M | 17.8 | 820 m | multiple | 2003–2017 | 01 Apr 2017 | 49 | — | MPC · JPL |
| 0 | 2003 UB425 | MBA-I | 19.10 | 450 m | multiple | 2003–2021 | 28 Nov 2021 | 57 | — | MPC · JPL |
| 0 | 2003 UD425 | MBA-M | 17.4 | 980 m | multiple | 2003–2020 | 07 Dec 2020 | 69 | — | MPC · JPL |
| 0 | 2003 UG425 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 28 Oct 2019 | 101 | — | MPC · JPL |
| 0 | 2003 UJ425 | MBA-M | 17.82 | 1.5 km | multiple | 1994–2021 | 07 Nov 2021 | 76 | — | MPC · JPL |
| 0 | 2003 UK425 | MBA-M | 17.42 | 1.4 km | multiple | 2003–2022 | 27 Jan 2022 | 117 | — | MPC · JPL |
| 0 | 2003 UL425 | MBA-I | 18.0 | 750 m | multiple | 2003–2020 | 20 Jan 2020 | 47 | — | MPC · JPL |
| 0 | 2003 UN425 | MBA-O | 17.51 | 1.8 km | multiple | 2003–2021 | 08 May 2021 | 59 | — | MPC · JPL |
| 0 | 2003 UO425 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2019 | 23 Oct 2019 | 51 | — | MPC · JPL |
| 0 | 2003 UQ425 | MBA-I | 18.6 | 570 m | multiple | 2003–2020 | 18 Sep 2020 | 82 | — | MPC · JPL |
| 0 | 2003 UR425 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 26 Sep 2019 | 55 | — | MPC · JPL |
| 0 | 2003 US425 | MBA-M | 17.42 | 1.8 km | multiple | 2003–2021 | 01 Oct 2021 | 68 | — | MPC · JPL |
| 0 | 2003 UU425 | MBA-M | 17.49 | 1.8 km | multiple | 2003–2021 | 27 Nov 2021 | 82 | — | MPC · JPL |
| 0 | 2003 UW425 | MBA-M | 18.28 | 660 m | multiple | 2003–2021 | 14 Apr 2021 | 112 | — | MPC · JPL |
| 0 | 2003 UZ425 | MBA-I | 18.08 | 720 m | multiple | 2003–2021 | 09 May 2021 | 82 | — | MPC · JPL |
| 0 | 2003 UA426 | MBA-M | 17.8 | 820 m | multiple | 2003–2021 | 24 Jan 2021 | 75 | — | MPC · JPL |
| 0 | 2003 UB426 | MBA-I | 18.7 | 540 m | multiple | 2003–2020 | 15 Dec 2020 | 72 | — | MPC · JPL |
| 0 | 2003 UC426 | MBA-I | 18.5 | 590 m | multiple | 2003–2021 | 11 Jan 2021 | 127 | — | MPC · JPL |
| 0 | 2003 UD426 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 17 Dec 2020 | 66 | — | MPC · JPL |
| 0 | 2003 UE426 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2020 | 15 Dec 2020 | 87 | — | MPC · JPL |
| 0 | 2003 UF426 | MBA-M | 17.69 | 1.6 km | multiple | 2003–2021 | 25 Nov 2021 | 73 | — | MPC · JPL |
| 0 | 2003 UG426 | MBA-I | 18.2 | 680 m | multiple | 2003–2021 | 09 Jan 2021 | 102 | — | MPC · JPL |
| 0 | 2003 UJ426 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 23 Jun 2020 | 49 | — | MPC · JPL |
| 0 | 2003 UK426 | MBA-I | 18.91 | 490 m | multiple | 2003–2021 | 28 Nov 2021 | 46 | — | MPC · JPL |
| 0 | 2003 UL426 | MBA-I | 18.55 | 580 m | multiple | 2003–2021 | 21 Apr 2021 | 90 | — | MPC · JPL |
| 0 | 2003 UM426 | MBA-M | 18.0 | 1.1 km | multiple | 2003–2020 | 24 Oct 2020 | 75 | — | MPC · JPL |
| 0 | 2003 UO426 | MBA-M | 17.90 | 1.5 km | multiple | 2003–2021 | 30 Nov 2021 | 66 | — | MPC · JPL |
| 0 | 2003 UP426 | MBA-M | 17.2 | 1.5 km | multiple | 2003–2021 | 12 Jan 2021 | 82 | — | MPC · JPL |
| 0 | 2003 UQ426 | MBA-O | 16.6 | 2.7 km | multiple | 2003–2021 | 04 Jan 2021 | 73 | — | MPC · JPL |
| 1 | 2003 US426 | MBA-I | 18.5 | 590 m | multiple | 2003–2020 | 21 May 2020 | 65 | — | MPC · JPL |
| 0 | 2003 UU426 | MBA-M | 17.60 | 1.3 km | multiple | 2003–2021 | 02 Dec 2021 | 76 | — | MPC · JPL |
| 0 | 2003 UX426 | MBA-I | 17.5 | 940 m | multiple | 2003–2020 | 15 Oct 2020 | 100 | — | MPC · JPL |
| 0 | 2003 UY426 | MBA-M | 17.85 | 1.5 km | multiple | 2003–2021 | 30 Nov 2021 | 83 | — | MPC · JPL |
| 0 | 2003 UA427 | MBA-I | 18.69 | 540 m | multiple | 2003–2021 | 09 Dec 2021 | 62 | — | MPC · JPL |
| 0 | 2003 UC427 | MBA-I | 18.3 | 650 m | multiple | 2003–2020 | 11 Oct 2020 | 65 | — | MPC · JPL |
| 0 | 2003 UE427 | MBA-M | 17.55 | 1.7 km | multiple | 2003–2021 | 27 Oct 2021 | 69 | — | MPC · JPL |
| 0 | 2003 UJ427 | MBA-M | 17.53 | 1.7 km | multiple | 2003–2021 | 07 Sep 2021 | 92 | — | MPC · JPL |
| 0 | 2003 UK427 | MBA-M | 17.16 | 1.6 km | multiple | 2003–2022 | 07 Jan 2022 | 135 | Alt.: 2010 LV25 | MPC · JPL |
| 0 | 2003 UL427 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2019 | 29 Oct 2019 | 65 | — | MPC · JPL |
| 0 | 2003 UM427 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2021 | 14 Jan 2021 | 83 | Alt.: 2010 FQ33 | MPC · JPL |
| 0 | 2003 UN427 | MBA-I | 18.5 | 590 m | multiple | 2003–2019 | 15 Nov 2019 | 67 | — | MPC · JPL |
| 0 | 2003 UO427 | MBA-O | 16.3 | 3.1 km | multiple | 2003–2021 | 15 Jan 2021 | 84 | — | MPC · JPL |
| 0 | 2003 UP427 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 15 Dec 2020 | 102 | — | MPC · JPL |
| 0 | 2003 UQ427 | MBA-M | 17.74 | 1.6 km | multiple | 2003–2021 | 07 Nov 2021 | 77 | — | MPC · JPL |
| 0 | 2003 UR427 | MBA-M | 17.25 | 2.0 km | multiple | 2003–2022 | 06 Jan 2022 | 111 | — | MPC · JPL |
| 0 | 2003 UT427 | MBA-I | 18.4 | 620 m | multiple | 2003–2020 | 12 Jul 2020 | 53 | — | MPC · JPL |
| 3 | 2003 UU427 | MBA-I | 18.7 | 540 m | multiple | 1996–2017 | 26 Nov 2017 | 42 | — | MPC · JPL |
| 0 | 2003 UW427 | MBA-M | 18.23 | 950 m | multiple | 2003–2022 | 07 Jan 2022 | 42 | — | MPC · JPL |
| 0 | 2003 UX427 | MBA-M | 17.6 | 1.3 km | multiple | 2003–2020 | 20 Oct 2020 | 40 | — | MPC · JPL |
| 0 | 2003 UZ427 | MBA-O | 16.5 | 2.8 km | multiple | 2003–2021 | 16 Jan 2021 | 73 | — | MPC · JPL |
| 0 | 2003 UA428 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2019 | 02 Dec 2019 | 58 | — | MPC · JPL |
| 0 | 2003 UB428 | MBA-M | 17.94 | 1.1 km | multiple | 1999–2022 | 25 Jan 2022 | 77 | — | MPC · JPL |
| 0 | 2003 UC428 | MBA-I | 18.3 | 650 m | multiple | 2003–2021 | 17 Jan 2021 | 43 | — | MPC · JPL |
| 0 | 2003 UE428 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2021 | 13 Jun 2021 | 60 | Alt.: 2011 GE99 | MPC · JPL |
| 0 | 2003 UF428 | MBA-M | 18.0 | 750 m | multiple | 2003–2021 | 19 Mar 2021 | 78 | Alt.: 2013 EW178 | MPC · JPL |
| 1 | 2003 UG428 | MBA-I | 18.3 | 650 m | multiple | 1996–2020 | 16 Aug 2020 | 73 | Alt.: 1996 TA21 | MPC · JPL |
| 0 | 2003 UK428 | MBA-I | 18.64 | 560 m | multiple | 2003–2021 | 06 Apr 2021 | 93 | — | MPC · JPL |
| 0 | 2003 UL428 | MBA-M | 17.8 | 820 m | multiple | 2003–2020 | 19 Dec 2020 | 47 | — | MPC · JPL |
| 0 | 2003 UM428 | MBA-I | 18.3 | 650 m | multiple | 2003–2020 | 22 Dec 2020 | 39 | — | MPC · JPL |
| 0 | 2003 UN428 | MBA-M | 17.33 | 1.9 km | multiple | 2003–2021 | 26 Nov 2021 | 120 | — | MPC · JPL |
| 0 | 2003 UO428 | MBA-M | 18.2 | 680 m | multiple | 2003–2021 | 14 Jan 2021 | 54 | — | MPC · JPL |
| 0 | 2003 UQ428 | MBA-M | 18.3 | 650 m | multiple | 2001–2019 | 28 Jul 2019 | 42 | — | MPC · JPL |
| 0 | 2003 UR428 | MBA-I | 18.5 | 590 m | multiple | 2003–2016 | 25 Oct 2016 | 43 | Alt.: 2016 QL32 | MPC · JPL |
| 1 | 2003 US428 | MCA | 18.8 | 520 m | multiple | 2003–2020 | 25 Apr 2020 | 45 | — | MPC · JPL |
| 2 | 2003 UT428 | MBA-I | 18.0 | 750 m | multiple | 2003–2016 | 13 Jan 2016 | 35 | — | MPC · JPL |
| 0 | 2003 UV428 | MBA-O | 17.3 | 1.9 km | multiple | 2003–2019 | 27 Oct 2019 | 40 | — | MPC · JPL |
| 0 | 2003 UW428 | MBA-M | 17.7 | 1.6 km | multiple | 2003–2020 | 22 Aug 2020 | 53 | — | MPC · JPL |
| 0 | 2003 UY428 | MBA-I | 18.8 | 520 m | multiple | 2003–2020 | 06 Dec 2020 | 70 | — | MPC · JPL |
| 1 | 2003 UZ428 | MBA-M | 18.3 | 920 m | multiple | 2003–2020 | 15 Dec 2020 | 59 | — | MPC · JPL |
| 0 | 2003 UA429 | MBA-I | 19.0 | 470 m | multiple | 2003–2019 | 29 Oct 2019 | 39 | — | MPC · JPL |
| 0 | 2003 UB429 | MBA-I | 17.8 | 820 m | multiple | 2003–2020 | 16 Aug 2020 | 55 | — | MPC · JPL |
| 0 | 2003 UC429 | MBA-I | 18.67 | 550 m | multiple | 2003–2022 | 13 Jan 2022 | 62 | — | MPC · JPL |
| 0 | 2003 UE429 | MBA-O | 17.7 | 1.6 km | multiple | 2002–2018 | 07 Aug 2018 | 39 | — | MPC · JPL |
| 0 | 2003 UF429 | MBA-O | 16.8 | 2.4 km | multiple | 2003–2021 | 18 Jan 2021 | 112 | Alt.: 2016 AM183 | MPC · JPL |
| 0 | 2003 UG429 | MBA-O | 17.1 | 2.1 km | multiple | 2003–2021 | 05 Jun 2021 | 99 | Alt.: 2010 JA7 | MPC · JPL |
| 0 | 2003 UH429 | MBA-O | 16.61 | 2.7 km | multiple | 2003–2022 | 10 Jan 2022 | 84 | Alt.: 2010 DM71 | MPC · JPL |
| 0 | 2003 UJ429 | MBA-I | 18.8 | 520 m | multiple | 2003–2019 | 22 Aug 2019 | 63 | — | MPC · JPL |
| 0 | 2003 UK429 | MBA-O | 16.63 | 2.6 km | multiple | 2003–2021 | 17 Apr 2021 | 65 | — | MPC · JPL |
| 0 | 2003 UL429 | MBA-O | 16.0 | 3.5 km | multiple | 2003–2020 | 25 May 2020 | 49 | — | MPC · JPL |
| 0 | 2003 UN429 | MBA-I | 18.1 | 710 m | multiple | 2003–2020 | 23 Jan 2020 | 52 | Alt.: 2003 SG368 | MPC · JPL |
| 0 | 2003 UQ429 | MBA-I | 18.4 | 620 m | multiple | 2003–2019 | 05 Sep 2019 | 52 | — | MPC · JPL |
| 0 | 2003 UR429 | MBA-M | 17.51 | 1.8 km | multiple | 2003–2021 | 09 Nov 2021 | 72 | — | MPC · JPL |
| 0 | 2003 US429 | MBA-M | 18.00 | 1.1 km | multiple | 2003–2021 | 09 Dec 2021 | 72 | — | MPC · JPL |
| 2 | 2003 UT429 | MBA-I | 19.3 | 410 m | multiple | 2003–2017 | 24 Nov 2017 | 39 | — | MPC · JPL |
| 0 | 2003 UV429 | MBA-O | 16.4 | 2.9 km | multiple | 2003–2020 | 24 Jan 2020 | 99 | — | MPC · JPL |
| 0 | 2003 UY429 | MBA-I | 18.8 | 520 m | multiple | 2003–2020 | 14 Sep 2020 | 51 | — | MPC · JPL |