List of unnumbered minor planets: 2004 J–O

This is a partial list of unnumbered minor planets for principal provisional designations assigned between 1 May and 31 July 2004. As of November 2025, a total of 152 bodies remain unnumbered for this period.[1][2][3][4] Objects for this year are listed on the following pages: A–B · C · D–E · F · G–H · J–O · P–Q · Ri · Rii · Riii · S · Ti · Tii · Tiii · Tiv · U–V · W–X and 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

J

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
6 2004 JB AMO 22.5 110 m single 29 days 30 May 2004 25 MPC · JPL
9 2004 JC APO 20.5 280 m single 21 days 29 May 2004 55 MPC · JPL
0 2004 JN1 APO 23.7 65 m multiple 2004–2021 15 Jun 2021 104 MPC · JPL
8 2004 JO1 APO 20.9 230 m single 20 days 30 May 2004 124 MPC · JPL
2 2004 JP1 APO 22.7 100 m multiple 2004–2016 23 Nov 2016 184 MPC · JPL
0 2004 JR1 AMO 17.5 1.1 km multiple 1999–2019 24 Dec 2019 529 NEO larger than 1 kilometer
Alt.: 1999 LL4
MPC · JPL
0 2004 JM2 MBA-I 18.9 490 m multiple 2004–2015 08 Sep 2015 33 Alt.: 2011 GX17 MPC · JPL
0 2004 JU2 MBA-I 19.25 420 m multiple 2004–2019 02 Apr 2019 21 Disc.: LPL/Spacewatch II
Added on 17 June 2021
Alt.: 2015 AD223
MPC · JPL
1 2004 JY3 MBA-I 19.06 370 m multiple 2004-2022 02 Jun 2022 43 MPC · JPL
0 2004 JP9 MBA-M 17.6 1.3 km multiple 2004–2021 09 Jun 2021 24 Disc.: LPL/Spacewatch II
Added on 17 June 2021
MPC · JPL
7 2004 JO12 AMO 23.8 62 m single 9 days 23 May 2004 54 MPC · JPL
1 2004 JP12 APO 23.59 74 m multiple 2004-2025 16 May 2025 32 MPC · JPL
5 2004 JO20 APO 26.2 20 m single 3 days 17 May 2004 35 MPC · JPL
8 2004 JU20 AMO 25.3 31 m single 3 days 16 May 2004 8 MPC · JPL
8 2004 JV20 APO 24.0 56 m single 2 days 17 May 2004 22 MPC · JPL
0 2004 JR37 MBA-M 17.78 1.5 km multiple 2004–2017 03 Feb 2017 20 MPC · JPL
0 2004 JW38 MBA-M 17.4 1.8 km multiple 2004–2017 27 Feb 2017 32 MPC · JPL
0 2004 JZ38 MCA 19.1 450 m multiple 2004–2021 21 Jun 2021 34 MPC · JPL
0 2004 JH39 MBA-O 17.2 2.0 km multiple 2004–2021 10 May 2021 33 Disc.: Spacewatch
Added on 17 June 2021
MPC · JPL
0 2004 JM48 MBA-I 19.0 470 m multiple 2004–2020 16 Jun 2020 39 Alt.: 2007 HU29 MPC · JPL
0 2004 JH49 MBA-I 18.5 590 m multiple 2004–2020 20 Oct 2020 43 Disc.: Spacewatch
Added on 19 October 2020
MPC · JPL
0 2004 JH56 MBA-O 16.83 2.7 km multiple 2004–2021 16 Apr 2021 40 Alt.: 2010 DV16 MPC · JPL
0 2004 JD57 MCA 18.9 490 m multiple 2004–2020 22 Apr 2020 58 MPC · JPL
0 2004 JH57 MBA-I 18.5 590 m multiple 2004–2019 02 Jan 2019 43 MPC · JPL
0 2004 JN57 MBA-I 19.0 470 m multiple 2004–2018 23 Apr 2018 35 MPC · JPL
0 2004 JR57 MBA-I 18.2 680 m multiple 2004–2016 05 Dec 2016 32 MPC · JPL
0 2004 JU57 MBA-I 18.1 710 m multiple 2004–2019 26 Nov 2019 63 MPC · JPL
0 2004 JR58 MBA-O 17.43 1.8 km multiple 2004–2021 30 May 2021 40 Disc.: LPL/Spacewatch II
Added on 11 May 2021
MPC · JPL
3 2004 JU58 MBA-M 18.0 750 m multiple 2004–2016 02 Mar 2016 17 Disc.: Spacewatch
Added on 29 January 2022
MPC · JPL

K

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
0 2004 KA AMO 21.02 220 m multiple 2004–2021 26 Oct 2021 267 MPC · JPL
1 2004 KB APO 21.09 220 m multiple 2004–2021 29 Jul 2021 79 Potentially hazardous object MPC · JPL
8 2004 KZ APO 25.5 28 m single 2 days 20 May 2004 26 MPC · JPL
1 2004 KF1 AMO 20.8 250 m multiple 2004–2007 10 Mar 2007 101 MPC · JPL
0 2004 KG1 ATE 24.04 60 m multiple 2004-2ß23 24 Jul 2023 104 MPC · JPL
0 2004 KR2 MBA-M 18.14 990 m multiple 2004–2021 18 May 2021 51 Disc.: Spacewatch
Added on 11 May 2021
MPC · JPL
6 2004 KN10 AMO 23.6 68 m single 24 days 14 Jun 2004 45 MPC · JPL
0 2004 KF15 AMO 20.7 260 m multiple 2004–2019 08 Oct 2019 119 MPC · JPL
5 2004 KE17 AMO 21.5 180 m single 10 days 07 Jun 2004 61 Potentially hazardous object MPC · JPL
5 2004 KF17 APO 26.1 21 m single 3 days 31 May 2004 41 MPC · JPL
7 2004 KG17 AMO 27.1 14 m single 6 days 03 Jun 2004 13 MPC · JPL
4 2004 KV18 TNO 8.9 92 km multiple 2004–2016 29 May 2016 22 LoUTNOs, centaur MPC · JPL
2 2004 KZ18 TNO 8.4 76 km multiple 2004–2015 12 Jun 2015 18 LoUTNOs, res · 2:5 MPC · JPL
3 2004 KB19 TNO 7.4 114 km multiple 2004–2015 15 Apr 2015 19 LoUTNOs, plutino, binary: 108 km MPC · JPL
2 2004 KC19 TNO 8.2 108 km multiple 2004–2016 29 May 2016 19 LoUTNOs, plutino MPC · JPL
4 2004 KD19 TNO 7.4 138 km multiple 2004–2008 05 May 2008 14 LoUTNOs, other TNO MPC · JPL
2 2004 KE19 TNO 6.4 174 km multiple 2004–2020 23 Jun 2020 25 LoUTNOs, cubewano (cold), binary: 129 km MPC · JPL
2 2004 KF19 TNO 6.9 139 km multiple 2004–2016 08 Jun 2016 22 LoUTNOs, cubewano (cold) MPC · JPL
3 2004 KG19 TNO 7.4 110 km multiple 2004–2015 15 Apr 2015 19 LoUTNOs, cubewano (cold) MPC · JPL
4 2004 KH19 TNO 6.4 218 km multiple 2004–2016 08 Jun 2016 23 LoUTNOs, other TNO, binary: 135 km MPC · JPL
3 2004 KJ19 TNO 7.1 158 km multiple 2004–2019 06 Jun 2019 83 LoUTNOs, other TNO MPC · JPL
3 2004 KK19 TNO 7.2 125 km multiple 2004–2010 20 Mar 2010 24 LoUTNOs, cubewano? MPC · JPL
3 2004 KL19 TNO 8.7 66 km multiple 2004–2008 05 May 2008 20 LoUTNOs, twotino MPC · JPL
3 2004 KM19 TNO 8.2 83 km multiple 2004–2008 08 Jun 2008 18 LoUTNOs, twotino MPC · JPL
0 2004 KY20 HUN 18.6 570 m multiple 2004–2018 14 Dec 2018 31 MPC · JPL
0 2004 KY21 MBA-O 17.6 1.7 km multiple 2004–2019 03 Sep 2019 25 MPC · JPL
0 2004 KH22 HIL 16.7 2.5 km multiple 2004–2015 09 Dec 2015 23 Disc.: Pan-STARRS
Added on 22 July 2020
MPC · JPL

L

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
2 2004 LB APO 21.6 170 m multiple 2004–2018 14 Jun 2018 157 Potentially hazardous object MPC · JPL
7 2004 LC APO 24.4 47 m single 7 days 15 Jun 2004 79 MPC · JPL
0 2004 LK AMO 22.7 100 m multiple 2004–2007 24 May 2007 67 MPC · JPL
6 2004 LV APO 24.1 54 m single 3 days 12 Jun 2004 21 MPC · JPL
5 2004 LB1 APO 23.2 81 m single 9 days 19 Jun 2004 40 MPC · JPL
8 2004 LB2 APO 22.3 120 m single 4 days 15 Jun 2004 54 MPC · JPL
6 2004 LD2 AMO 21.2 200 m single 32 days 13 Jul 2004 57 MPC · JPL
7 2004 LO2 ATE 25.0 36 m single 4 days 15 Jun 2004 31 MPC · JPL
8 2004 LX5 AMO 25.6 27 m single 1 day 13 Jun 2004 18 MPC · JPL
0 2004 LY5 APO 21.68 180 m multiple 2004-2022 13 Feb 2022 66 Potentially hazardous object MPC · JPL
0 2004 LZ5 AMO 18.43 730 m multiple 2004–2021 13 Sep 2021 90 MPC · JPL
6 2004 LA6 AMO 21.8 160 m single 41 days 24 Jul 2004 43 MPC · JPL
5 2004 LA10 AMO 25.1 34 m single 14 days 28 Jun 2004 52 MPC · JPL
0 2004 LH18 MCA 19.8 610 m multiple 2004–2019 04 Aug 2019 43 Alt.: 2019 MZ1 MPC · JPL
0 2004 LR18 MBA-M 17.6 1.7 km multiple 2004–2014 23 Nov 2014 31 Alt.: 2014 WS244 MPC · JPL
1 2004 LQ19 MBA-I 18.4 620 m multiple 2004–2019 31 Oct 2019 41 MPC · JPL
0 2004 LA24 HUN 18.8 520 m multiple 2004–2020 30 Jun 2020 20 Disc.: Spacewatch
Added on 13 September 2020
MPC · JPL
0 2004 LN27 MBA-M 16.4 2.9 km multiple 2000–2021 23 Jan 2021 150 Alt.: 2012 CD38, 2014 QZ292 MPC · JPL
0 2004 LX28 MBA-M 17.6 1.3 km multiple 2004–2021 10 Sep 2021 29 Disc.: Spacewatch
Added on 30 September 2021
MPC · JPL
3 2004 LV31 TNO 8.8 60 km multiple 2004–2005 03 Aug 2005 10 LoUTNOs, cubewano? MPC · JPL
2 2004 LW31 TNO 7.0 132 km multiple 2004–2019 29 Jul 2019 39 LoUTNOs, cubewano (cold) MPC · JPL
9 2004 LT32 TNO 6.89 158 km multiple 2004–2005 03 Aug 2005 12 LoUTNOs, SDO MPC · JPL
9 2004 LU32 TNO 8.61 65 km multiple 2004–2005 03 Aug 2005 7
Added on 22 July 2020
LoUTNOs, cubewano?
MPC · JPL
9 2004 LV32 TNO 8.94 68 km single 37 days 16 Jul 2004 8
Added on 22 July 2020
LoUTNOs, other TNO
MPC · JPL
9 2004 LW32 TNO 8.11 90 km single 37 days 16 Jul 2004 8
Added on 22 July 2020
LoUTNOs, SDO
MPC · JPL
9 2004 LX32 TNO 8.23 126 km single 37 days 16 Jul 2004 7
Added on 22 July 2020
LoUTNOs, centaur
MPC · JPL
9 2004 LY32 TNO 7.16 154 km single 36 days 15 Jul 2004 7
Added on 22 July 2020
LoUTNOs, other TNO
MPC · JPL
9 2004 LZ32 TNO 7.91 109 km single 62 days 10 Aug 2004 7
Added on 22 July 2020
LoUTNOs, other TNO
MPC · JPL
9 2004 LA33 TNO 8.6 123 km single 64 days 12 Aug 2004 11
Added on 22 July 2020
MPC · JPL
E 2004 LB33 TNO 8.5 111 km single 2 days 11 Jun 2004 5
Added on 22 July 2020
LoUTNOs
MPC · JPL
E 2004 LC33 TNO 7.9 109 km single 2 days 11 Jun 2004 5
Added on 22 July 2020
LoUTNOs, other TNO
MPC · JPL
E 2004 LD33 TNO 8.5 94 km single 2 days 11 Jun 2004 4
Added on 22 July 2020
LoUTNOs, plutino?
MPC · JPL
9 2004 LE33 TNO 8.77 98 km single 2 days 11 Jun 2004 4
Added on 22 July 2020
LoUTNOs, centaur
MPC · JPL

M

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
7 2004 MC APO 23.3 78 m single 15 days 30 Jun 2004 131 MPC · JPL
8 2004 MN1 APO 24.6 43 m single 1 day 17 Jun 2004 7 MPC · JPL
9 2004 MO1 AMO 23.2 81 m single 2 days 19 Jun 2004 22 MPC · JPL
9 2004 MP1 APO 25.2 32 m single 7 days 24 Jun 2004 34 MPC · JPL
7 2004 MR1 APO 25.6 27 m single 1 day 19 Jun 2004 38 MPC · JPL
6 2004 MS1 APO 22.3 120 m single 21 days 09 Jul 2004 87 MPC · JPL
7 2004 MV2 APO 23.5 71 m single 4 days 23 Jun 2004 22 MPC · JPL
0 2004 MX2 APO 19.30 1.3 km multiple 2004–2019 14 Jan 2019 97 Potentially hazardous object MPC · JPL
2 2004 MO3 APO 22.2 130 m multiple 2004–2015 25 Aug 2015 134 MPC · JPL
5 2004 MO AMO 24.9 37 m single 32 days 24 Jul 2004 79 MPC · JPL
1 2004 MA5 MBA-M 17.54 940 m multiple 2004-2021 12 Sep 2021 35 MPC · JPL
1 2004 MB5 MCA 17.07 1.1 km multiple 2004-2024 12 Feb 2024 53 MPC · JPL
0 2004 MB6 APO 19.6 430 m multiple 2004–2012 07 Jul 2012 62 MPC · JPL
0 2004 ME6 APO 20.7 210 m multiple 2004-2025 28 Jul 2025 108 Disc.: LPL/Spacewatch II MPC · JPL
0 2004 MJ6 MBA-O 17.05 2.2 km multiple 2004–2021 04 Aug 2021 57 Disc.: Spacewatch
Added on 24 December 2021
MPC · JPL
0 2004 MQ6 APO 19.7 410 m multiple 2004–2014 01 Jun 2014 128 MPC · JPL
6 2004 MP7 APO 21.7 160 m single 26 days 22 Jul 2004 62 Potentially hazardous object MPC · JPL
1 2004 MZ7 MCA 17.8 1.5 km multiple 2004–2019 26 May 2019 232 MPC · JPL
4 2004 MS8 TNO 8.3 103 km multiple 2004–2013 06 Oct 2013 18 LoUTNOs, plutino MPC · JPL
4 2004 MT8 TNO 6.5 167 km multiple 2004–2015 12 Jun 2015 16 LoUTNOs, cubewano (cold) MPC · JPL
4 2004 MU8 TNO 5.95 160 km multiple 2004–2021 09 Jul 2021 36 LoUTNOs, cubewano (cold), binary: 143 km MPC · JPL
4 2004 MV8 TNO 6.88 152 km multiple 2004–2021 09 Aug 2021 18 LoUTNOs, twotino? MPC · JPL
0 2004 MX9 MBA-I 18.3 650 m multiple 2004–2019 24 Sep 2019 46 MPC · JPL
9 2004 MK10 TNO 8.01 139 km single 51 days 12 Aug 2004 8 Disc.: Mauna Kea Obs.
Added on 22 July 2020
LoUTNOs, centaur
MPC · JPL
9 2004 MM10 TNO 7.21 201 km single 22 days 15 Jul 2004 7 Disc.: Mauna Kea Obs.
Added on 22 July 2020
LoUTNOs, centaur
MPC · JPL
9 2004 MN10 TNO 8.02 104 km single 55 days 10 Aug 2004 6 Disc.: Mauna Kea Obs.
Added on 22 July 2020
LoUTNOs, other TNO
MPC · JPL
9 2004 MO10 TNO 8.12 132 km single 51 days 12 Aug 2004 6 Disc.: Mauna Kea Obs.
Added on 22 July 2020
LoUTNOs, centaur
MPC · JPL
E 2004 MP10 TNO 8.0 119 km single 47 days 10 Aug 2004 5 Disc.: Mauna Kea Obs.
Added on 22 July 2020
LoUTNOs, plutino?
MPC · JPL

N

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
1 2004 NG1 MBA-M 18.11 710 m multiple 2004–2021 28 Nov 2021 53 MPC · JPL
6 2004 NF3 AMO 24.5 45 m single 11 days 22 Jul 2004 38 MPC · JPL
0 2004 NT7 MCA 18.0 750 m multiple 2004–2020 29 Jan 2020 48 MPC · JPL
8 2004 NU7 APO 24.4 47 m single 7 days 21 Jul 2004 22 AMO at MPC MPC · JPL
7 2004 NK8 APO 23.5 71 m single 28 days 11 Aug 2004 27 MPC · JPL
1 2004 NM8 AMO 21.3 200 m multiple 2004–2016 28 Aug 2016 58 MPC · JPL
2004 NN8 TNO 15.3 5.0 km multiple 2004–2005 01 May 2005 82 LoUTNOs, damocloid MPC · JPL
1 2004 NR13 MBA-M 17.7 1.2 km multiple 2004–2017 22 Oct 2017 34 MPC · JPL
0 2004 NU18 MCA 19.8 330 m multiple 2004–2018 15 Oct 2018 44
Added on 22 July 2020
Alt.: 2012 GB12
MPC · JPL
1 2004 NN28 MBA-M 17.6 900 m multiple 2004–2020 21 Jul 2020 61 MPC · JPL
1 2004 NM30 MBA-M 18.42 620 m multiple 2004–2021 31 Oct 2021 44 MPC · JPL
1 2004 NN31 MCA 19.65 350 m multiple 2004–2019 29 Oct 2019 87 MPC · JPL
0 2004 NU33 MCA 19.05 460 m multiple 2004–2021 11 May 2021 56 MPC · JPL

O

[edit]
U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
6 2004 OD4 APO 27.0 14 m single 4 days 21 Jul 2004 33 MPC · JPL
2 2004 OF6 AMO 21.2 200 m multiple 2004–2017 11 Nov 2017 50 MPC · JPL
0 2004 OO8 MBA-O 17.4 1.8 km multiple 2004–2019 28 Dec 2019 66 MPC · JPL
0 2004 OP10 MCA 17.73 1.2 km multiple 2004–2021 27 Sep 2021 145 MPC · JPL
1 2004 OW10 APO 24.61 50 m multiple 2004-2023 25 Mar 2023 51 MPC · JPL
E 2004 OL12 TNO 6.1 200 km single 64 days 18 Sep 2004 7 LoUTNOs, cubewano (cold) MPC · JPL
1 2004 OF13 MBA-M 18.53 900 m multiple 2004-2023 21 Jan 2023 45 Alt.: 2022 QF231 MPC · JPL
3 2004 OJ14 TNO 6.4 218 km multiple 2004–2007 11 Jul 2007 13 LoUTNOs, other TNO, BR-mag: 1.42; taxonomy: IR MPC · JPL
4 2004 OL14 TNO 8.09 91 km multiple 2004–2005 09 Aug 2005 11 LoUTNOs, SDO MPC · JPL
4 2004 OP15 TNO 6.9 173 km multiple 2004–2017 04 Jul 2017 18 LoUTNOs, other TNO MPC · JPL
5 2004 OQ15 TNO 6.64 170 km multiple 2004–2021 09 Jul 2021 31 LoUTNOs, res · 4:7, BR-mag: 1.36; taxonomy: BR-IR MPC · JPL
4 2004 OS15 TNO 7.2 137 km multiple 2004–2019 04 Sep 2019 21 LoUTNOs, SDO MPC · JPL
1 2004 OC16 MBA-I 18.4 620 m multiple 2004–2019 10 Mar 2019 41 MPC · JPL
1 2004 OG16 MBA-I 18.7 540 m multiple 2004–2018 19 Mar 2018 29 MPC · JPL
0 2004 OH16 MBA-I 19.4 390 m multiple 2004–2020 10 Aug 2020 31 MPC · JPL
1 2004 OL16 MBA-I 19.6 360 m multiple 2004–2014 25 Oct 2014 25 MPC · JPL
0 2004 OM16 MBA-I 19.43 390 m multiple 2004–2021 30 Oct 2021 21 MPC · JPL
1 2004 OY16 MBA-O 17.6 1.7 km multiple 2004–2019 03 Oct 2019 39 MPC · JPL
1 2004 OE17 MBA-O 17.4 1.8 km multiple 2004–2021 14 Jan 2021 42
Added on 22 July 2020
MPC · JPL
2 2004 OQ17 MBA-O 17.8 1.5 km multiple 2004–2019 23 Oct 2019 19 Disc.: Cerro Tololo
Added on 17 June 2021
MPC · JPL
0 2004 OR17 MBA-O 17.80 1.5 km multiple 1999–2021 09 Nov 2021 61 Disc.: Cerro Tololo
Added on 5 November 2021
MPC · JPL
1 2004 OS17 MBA-M 17.87 790 m multiple 2004–2022 04 Jan 2022 25 Disc.: Cerro Tololo
Added on 24 December 2021
MPC · JPL

References

[edit]
  1. ^ "Data Available from the Minor Planet Center – MPCORB.DAT". Minor Planet Center. 29 January 2022. (doc)
  2. ^ "NEOWISE Diameters and Albedos – V2.0". PDS Small Bodies Node. 2019. Retrieved 1 February 2022.
  3. ^ Johnston, Wm. Robert (2 January 2022). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 1 February 2022.
  4. ^ "List Of Jupiter Trojans". Minor Planet Center. 26 January 2021. Retrieved 1 February 2022.