List of unnumbered minor planets: 2004 Y

This is a partial list of unnumbered minor planets for principal provisional designations assigned during 16–31 December 2004. As of February 2022, a total of 156 bodies remain unnumbered for this period.[1][2][3] 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

Y

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
82004 YAAPO24.937 msingle2 days18 Dec 200419Disc.: LINEARMPC · JPL
82004 YCATE25.627 msingle5 days19 Dec 200435Disc.: LINEARMPC · JPL
82004 YDATE24.056 msingle9 days26 Dec 200422Disc.: LONEOSMPC · JPL
62004 YEAMO24.937 msingle19 days03 Jan 200521Disc.: LINEARMPC · JPL
02004 YFMCA17.691.2 kmmultiple2001–202117 Dec 202183Disc.: LINEARMPC · JPL
12004 YLHUN18.3650 mmultiple2004–201905 Jul 201943Disc.: LINEAR
Alt.: 2014 NP49
MPC · JPL
82004 YQAPO24.447 msingle2 days20 Dec 200418Disc.: LINEARMPC · JPL
12004 YRAPO20.3310 mmultiple2004–201401 Jul 2014134Disc.: LINEARMPC · JPL
22004 YG1APO21.4190 mmultiple2004–201302 Aug 201394Disc.: LINEARMPC · JPL
02004 YH1MCA17.55920 mmultiple2004–202206 Jan 202258Disc.: LINEARMPC · JPL
52004 YJ1AMO20.7260 msingle15 days02 Jan 200551Disc.: LINEARMPC · JPL
12004 YK1AMO21.3200 mmultiple2004–201820 Mar 201847Disc.: LINEARMPC · JPL
02004 YX1MCA17.901.1 kmmultiple2004–202128 Nov 2021116Disc.: MLSMPC · JPL
02004 YX4MBA-M16.942.3 kmmultiple2004–202109 Sep 202164Disc.: KLENOT
Alt.: 2010 KR65
MPC · JPL
92004 YA5ATE22.6110 msingle13 days31 Dec 200430Disc.: LINEARMPC · JPL
2004 YB5MCA18.01.4 kmsingle2 days21 Dec 200428Disc.: LINEARMPC · JPL
62004 YD5APO29.35 msingle1 day21 Dec 200421Disc.: SpacewatchMPC · JPL
02004 YW5MCA19.12450 mmultiple2004–202208 Jan 202279Disc.: SpacewatchMPC · JPL
02004 YH6MBA-M17.7860 mmultiple2004–202104 Jan 2021107Disc.: Spacewatch
Alt.: 2009 BC191, 2012 XY102, 2015 PT99
MPC · JPL
02004 YA7MBA-I18.3650 mmultiple2004–202106 Jan 2021148Disc.: MLSMPC · JPL
02004 YE8MBA-O16.42.9 kmmultiple2004–202020 Dec 202083Disc.: MLSMPC · JPL
02004 YN11MBA-O17.41.8 kmmultiple2004–201924 Sep 201935Disc.: MLSMPC · JPL
02004 YU12MBA-O17.51.8 kmmultiple2004–202014 Nov 202062Disc.: MLSMPC · JPL
02004 YD13MBA-I18.4620 mmultiple2004–201810 Dec 201825Disc.: MLSMPC · JPL
02004 YE13JT13.710 kmmultiple2004–202024 Jun 2020107Disc.: MLS
Trojan camp (L5)
MPC · JPL
02004 YS13MBA-I18.6570 mmultiple2000–202002 Feb 202062Disc.: Spacewatch
Alt.: 2000 XJ
MPC · JPL
02004 YZ13MBA-O17.421.8 kmmultiple2004–202212 Jan 202259Disc.: MLS
Added on 21 August 2021
Alt.: 2010 BH46, 2015 XP371
MPC · JPL
52004 YF15JT13.89.7 kmmultiple2004–201731 Jan 201724Disc.: MLS
Trojan camp (L5)
Alt.: 2017 BN37
MPC · JPL
02004 YH15MBA-I18.01740 mmultiple2004–202113 May 202180Disc.: MLS
Alt.: 2009 DM59, 2011 SR213, 2011 UY217, 2011 VU24
MPC · JPL
02004 YK15JT14.28.0 kmmultiple2004–202021 Jun 202054Disc.: MLS
Added on 17 January 2021
Trojan camp (L5)
MPC · JPL
02004 YS15MBA-O16.872.4 kmmultiple2004–202117 Apr 202171Disc.: MLSMPC · JPL
02004 YU15MBA-O17.51.8 kmmultiple2002–202113 Feb 202135Disc.: MLS
Added on 11 May 2021
MPC · JPL
02004 YW16MBA-O16.82.4 kmmultiple2004–202118 Jan 2021101Disc.: MLSMPC · JPL
02004 YC17MBA-M17.011.7 kmmultiple2004–202227 Jan 2022183Disc.: MLS
Alt.: 2010 LG101
MPC · JPL
02004 YD17MBA-M17.21.5 kmmultiple2004–202012 Sep 202086Disc.: MLSMPC · JPL
02004 YQ17MBA-M17.21.1 kmmultiple2004–202104 Jan 2021121Disc.: MLS
Alt.: 2010 JL164, 2015 PZ112
MPC · JPL
02004 YX17MBA-M17.50940 mmultiple1999–202226 Jan 202298Disc.: MLS
Alt.: 2012 XC157
MPC · JPL
02004 YX18MBA-M17.591.7 kmmultiple2004–202111 Sep 202161Disc.: MLS
Alt.: 2013 YE106
MPC · JPL
02004 YJ19MBA-M17.31.5 kmmultiple2004–202017 Oct 202051Disc.: MLSMPC · JPL
02004 YG22MBA-M17.461.4 kmmultiple2004–202225 Jan 202291Disc.: MLS
Added on 9 March 2021
Alt.: 2016 UY9
MPC · JPL
02004 YX23MBA-O16.33.1 kmmultiple1994–202117 Jan 2021204Disc.: Spacewatch
Alt.: 1994 AO9, 2010 EE183, 2014 UB218
MPC · JPL
42004 YY23AMO19.4470 msingle44 days04 Feb 2005157Disc.: CSSMPC · JPL
22004 YN24MBA-M17.8820 mmultiple2000–202109 Jan 202177Disc.: Spacewatch
Added on 17 January 2021
Alt.: 2009 AG34
MPC · JPL
02004 YY24MBA-M17.411.4 kmmultiple2004–202204 Jan 202294Disc.: MLSMPC · JPL
02004 YJ25MBA-I18.28660 mmultiple2004–202107 Oct 202147Disc.: MLSMPC · JPL
02004 YS25MBA-O16.62.7 kmmultiple2004–202123 Jan 2021142Disc.: MLS
Alt.: 2010 EF179, 2015 AX206, 2016 EK30
MPC · JPL
02004 YT25MBA-M17.81.2 kmmultiple2004–202016 Oct 202067Disc.: MLS
Alt.: 2012 VS45
MPC · JPL
02004 YB26MBA-O16.533.0 kmmultiple2004–202225 Jan 202296Disc.: MLSMPC · JPL
02004 YD26MBA-M17.11.1 kmmultiple2004–202111 Jan 2021126Disc.: MLS
Alt.: 2010 MR50
MPC · JPL
02004 YU26MBA-I18.03740 mmultiple2000–202130 May 2021108Disc.: MLS
Alt.: 2009 BG108, 2015 VX134
MPC · JPL
02004 YX26MBA-O16.722.5 kmmultiple2004–202227 Jan 202261Disc.: MLS
Alt.: 2010 DO90
MPC · JPL
02004 YT27MBA-I18.0750 mmultiple2004–201921 Dec 201983Disc.: Spacewatch
Alt.: 2009 BQ98
MPC · JPL
02004 YV27MBA-O16.832.4 kmmultiple2003–202129 Nov 2021160Disc.: Spacewatch
Alt.: 2014 OF116, 2017 BQ43
MPC · JPL
02004 YZ27MBA-M16.42.9 kmmultiple2004–202017 May 2020124Disc.: LINEAR
Alt.: 2009 WT43
MPC · JPL
02004 YB28MBA-I18.2680 mmultiple2004–202102 Jan 2021150Disc.: LINEAR
Alt.: 2007 TW377
MPC · JPL
02004 YF28HUN19.03460 mmultiple2004–202206 Jan 202223Disc.: Spacewatch
Added on 24 December 2021
MPC · JPL
02004 YL28MBA-I18.5590 mmultiple2004–202104 Jan 202162Disc.: SpacewatchMPC · JPL
02004 YB29MBA-O16.62.7 kmmultiple2004–202014 Dec 202087Disc.: Spacewatch
Alt.: 2014 WM32, 2016 AL142
MPC · JPL
02004 YX29MBA-M17.21.1 kmmultiple2004–202114 Jan 202169Disc.: SpacewatchMPC · JPL
02004 YE32MCA17.581.3 kmmultiple2001–202213 Jan 2022108Disc.: LONEOSMPC · JPL
02004 YK32MBA-O16.432.9 kmmultiple2004–202109 Dec 2021126Disc.: MLSMPC · JPL
02004 YG34MBA-O16.802.4 kmmultiple1998–202108 Apr 202198Disc.: Spacewatch
Alt.: 1998 SZ17, 2003 SM421
MPC · JPL
02004 YS34MBA-O16.73.5 kmmultiple2004–202016 Oct 202080Disc.: MLS
Alt.: 2010 AP123
MPC · JPL
12004 YY34MBA-O17.142.1 kmmultiple2004–202126 Nov 202159Disc.: MLS
Added on 5 November 2021
MPC · JPL
02004 YD35MBA-O16.23.2 kmmultiple2003–202117 Jan 2021126Disc.: MLS
Alt.: 2016 EM2
MPC · JPL
02004 YW35MBA-I18.05730 mmultiple2000–202115 Apr 202181Disc.: MLSMPC · JPL
02004 YC36MBA-O16.03.5 kmmultiple2004–202118 Jan 2021133Disc.: Spacewatch
Alt.: 2012 LY8
MPC · JPL
02004 YS36MBA-O17.22.0 kmmultiple2004–202107 Jan 202168Disc.: MLS
Alt.: 2004 YC15, 2016 CS152
MPC · JPL
12004 YR37MBA-M17.91.1 kmmultiple2004–202010 Nov 202079Disc.: MLSMPC · JPL
02004 YT37MBA-M16.951.2 kmmultiple2004–202227 Jan 2022147Disc.: MLSMPC · JPL
02004 YV37MBA-M17.241.5 kmmultiple2004–202225 Jan 2022118Disc.: MLSMPC · JPL
02004 YW37MBA-I18.22670 mmultiple2004–202102 Dec 2021121Disc.: SpacewatchMPC · JPL
02004 YX37MBA-I17.01.2 kmmultiple2004–202018 Jul 2020152Disc.: SpacewatchMPC · JPL
02004 YY37MBA-I18.23670 mmultiple2004–202226 Jan 202292Disc.: SpacewatchMPC · JPL
12004 YA38MBA-M16.91.2 kmmultiple2004–202111 Jan 2021278Disc.: CSSMPC · JPL
02004 YD38MBA-M17.351.4 kmmultiple2004–202128 Dec 202181Disc.: SpacewatchMPC · JPL
02004 YE38MBA-I17.301.0 kmmultiple2004–202130 Jun 2021144Disc.: SpacewatchMPC · JPL
02004 YJ38HUN18.79520 mmultiple2004–202111 Apr 202167Disc.: SpacewatchMPC · JPL
02004 YK38MBA-I18.7540 mmultiple2004–202016 Mar 202064Disc.: MLSMPC · JPL
02004 YM38MBA-I18.82510 mmultiple2004–202227 Jan 202256Disc.: SpacewatchMPC · JPL
22004 YN38MBA-I18.6570 mmultiple2004–201806 Oct 201857Disc.: MLSMPC · JPL
12004 YO38MBA-M16.91.2 kmmultiple2002–202116 Jan 2021123Disc.: Spacewatch
Alt.: 2013 AJ195
MPC · JPL
02004 YP38MBA-O16.33.1 kmmultiple2004–202015 May 202066Disc.: SpacewatchMPC · JPL
02004 YQ38MBA-M17.5940 mmultiple2004–202020 Oct 202069Disc.: SpacewatchMPC · JPL
02004 YS38MBA-M17.921.1 kmmultiple2004–202222 Jan 202273Disc.: SpacewatchMPC · JPL
02004 YT38MBA-O16.373.0 kmmultiple2004–202227 Jan 202291Disc.: MLSMPC · JPL
02004 YU38MBA-M17.401.4 kmmultiple2004–202204 Jan 2022127Disc.: SpacewatchMPC · JPL
02004 YV38MBA-M17.172.0 kmmultiple2004–202104 Oct 202164Disc.: SpacewatchMPC · JPL
02004 YW38MBA-O15.93.7 kmmultiple2004–202016 Nov 202070Disc.: SpacewatchMPC · JPL
02004 YY38MBA-M17.741.2 kmmultiple2004–202104 Dec 202150Disc.: SpacewatchMPC · JPL
02004 YZ38MBA-O16.293.1 kmmultiple2004–202225 Jan 2022138Disc.: SpacewatchMPC · JPL
02004 YA39MBA-O16.52.8 kmmultiple2004–202109 Jan 202160Disc.: MLS
Alt.: 2016 BC3
MPC · JPL
02004 YB39MBA-M17.7860 mmultiple1991–202106 Jan 2021135Disc.: Spacewatch
Alt.: 1995 SB44
MPC · JPL
02004 YC39MBA-M16.712.5 kmmultiple2004–202130 Jul 202182Disc.: SpacewatchMPC · JPL
02004 YD39MBA-O16.62.7 kmmultiple2004–202117 Jan 202173Disc.: Spacewatch
Alt.: 2010 BT124
MPC · JPL
02004 YE39MBA-O16.432.9 kmmultiple2004–202227 Jan 2022114Disc.: MLS
Alt.: 2010 CU193
MPC · JPL
02004 YF39MBA-I18.4620 mmultiple2004–202026 Apr 202047Disc.: SpacewatchMPC · JPL
02004 YG39MBA-I19.02470 mmultiple2004–202131 Aug 202133Disc.: SpacewatchMPC · JPL
32004 YJ39MBA-M18.01.1 kmmultiple2004–201818 Feb 201828Disc.: MLSMPC · JPL
02004 YK39MBA-M17.71.2 kmmultiple2004–202025 Jul 202036Disc.: MLSMPC · JPL
12004 YL39MBA-M17.6900 mmultiple2004–202114 Jan 2021179Disc.: CSSMPC · JPL
02004 YM39MBA-O16.932.3 kmmultiple2002–202206 Jan 202273Disc.: MLS
Alt.: 2010 CW214
MPC · JPL
02004 YO39MBA-I18.3650 mmultiple2004–201929 Oct 201972Disc.: MLSMPC · JPL
02004 YP39MBA-I18.0750 mmultiple2004–202022 Jan 202072Disc.: SpacewatchMPC · JPL
02004 YQ39MBA-O16.72.5 kmmultiple2004–202117 Jan 202179Disc.: SpacewatchMPC · JPL
02004 YT39MBA-I19.0470 mmultiple2004–201903 Dec 201958Disc.: MLSMPC · JPL
12004 YU39MBA-I18.7540 mmultiple2004–201815 Oct 201852Disc.: SpacewatchMPC · JPL
02004 YV39HIL15.64.2 kmmultiple2003–202118 Jan 202173Disc.: MLSMPC · JPL
02004 YW39MBA-M17.5940 mmultiple2004–202015 Dec 202069Disc.: MLSMPC · JPL
02004 YY39MBA-M17.311.5 kmmultiple2004–202101 Nov 202158Disc.: SpacewatchMPC · JPL
02004 YA40MBA-M18.091.0 kmmultiple2004–202128 Sep 202156Disc.: MLSMPC · JPL
02004 YB40MBA-M17.841.1 kmmultiple2004–202109 Dec 202190Disc.: SpacewatchMPC · JPL
02004 YC40MBA-O17.012.2 kmmultiple2004–202130 Nov 202154Disc.: MLSMPC · JPL
02004 YD40MBA-I19.16440 mmultiple2004–202113 Jul 202148Disc.: MLSMPC · JPL
02004 YE40MBA-M17.361.9 kmmultiple2004–202107 Sep 202177Disc.: MLS
Alt.: 2015 FK161
MPC · JPL
02004 YF40MBA-O16.82.4 kmmultiple2004–202118 Jan 202139Disc.: MLSMPC · JPL
12004 YG40HUN19.1450 mmultiple2004–202023 Jan 202055Disc.: MLSMPC · JPL
12004 YH40MBA-I18.1710 mmultiple2004–202024 Mar 202038Disc.: MLSMPC · JPL
02004 YJ40MBA-M17.511.3 kmmultiple2004–202111 Nov 202140Disc.: SpacewatchMPC · JPL
02004 YK40MCA18.3650 mmultiple2004–202008 Sep 2020139Disc.: SpacewatchMPC · JPL
02004 YL40MBA-O16.412.9 kmmultiple2004–202225 Jan 2022134Disc.: Spacewatch
Alt.: 2010 BW130
MPC · JPL
02004 YM40MBA-M16.91.2 kmmultiple2004–202023 Dec 202072Disc.: MLSMPC · JPL
02004 YN40MBA-O16.183.2 kmmultiple2004–202110 Sep 202173Disc.: MLSMPC · JPL
02004 YP40MBA-O17.22.0 kmmultiple2004–202130 May 202158Disc.: SpacewatchMPC · JPL
02004 YQ40MBA-M17.291.9 kmmultiple2004–202101 Jul 202179Disc.: SpacewatchMPC · JPL
02004 YT40MBA-M17.41.8 kmmultiple2004–202027 Apr 202034Disc.: SpacewatchMPC · JPL
02004 YU40MBA-I18.7540 mmultiple2004–202012 Sep 202033Disc.: MLSMPC · JPL
02004 YW40JT13.879.4 kmmultiple2004–202103 Aug 2021163Disc.: MLS
Trojan camp (L5)
MPC · JPL
02004 YX40MBA-M18.021.0 kmmultiple2004–202127 Nov 202157Disc.: SpacewatchMPC · JPL
02004 YY40MBA-I18.5590 mmultiple2004–201814 Aug 201838Disc.: MLSMPC · JPL
02004 YZ40MBA-I18.2680 mmultiple2004–202109 Apr 202146Disc.: MLS
Alt.: 2017 CV45
MPC · JPL
02004 YA41MBA-I18.75530 mmultiple2004–202205 Jan 202234Disc.: MLSMPC · JPL
02004 YB41MBA-I18.7540 mmultiple2004–201806 Oct 201833Disc.: SpacewatchMPC · JPL
02004 YC41MBA-I17.8820 mmultiple2004–202001 Feb 202068Disc.: SpacewatchMPC · JPL
02004 YD41MBA-O16.82.4 kmmultiple2004–202018 Nov 202056Disc.: SpacewatchMPC · JPL
12004 YE41HUN18.9490 mmultiple2004–202107 Jun 202151Disc.: MLSMPC · JPL
02004 YF41MBA-I18.7540 mmultiple2004–202023 Jan 202046Disc.: SpacewatchMPC · JPL
02004 YH41MBA-I18.6570 mmultiple2004–202030 Jan 202051Disc.: Spacewatch
Added on 22 July 2020
MPC · JPL
02004 YJ41MBA-I18.2680 mmultiple2004–201929 Apr 201946Disc.: MLS
Added on 22 July 2020
MPC · JPL
02004 YK41MBA-I18.1710 mmultiple2004–202111 Jun 202191Disc.: MLS
Added on 22 July 2020
MPC · JPL
02004 YL41MBA-M17.401.4 kmmultiple2004–202120 Nov 202171Disc.: MLS
Added on 22 July 2020
MPC · JPL
02004 YM41MBA-M17.581.7 kmmultiple2004–202113 Jul 202134Disc.: MLS
Added on 22 July 2020
MPC · JPL
12004 YN41MBA-I18.8520 mmultiple2004–202022 Mar 202035Disc.: MLS
Added on 22 July 2020
MPC · JPL
12004 YO41MBA-I18.6570 mmultiple2004–202021 Mar 202033Disc.: MLS
Added on 22 July 2020
MPC · JPL
22004 YP41MBA-M17.4980 mmultiple2004–202021 Dec 202076Disc.: MLS
Added on 19 October 2020
MPC · JPL
02004 YQ41MBA-O16.452.9 kmmultiple2004–202225 Jan 2022112Disc.: MLS
Added on 17 January 2021
MPC · JPL
02004 YR41MBA-M17.341.0 kmmultiple2001–202212 Jan 202288Disc.: CSS
Added on 17 January 2021
Alt.: 2020 MK7
MPC · JPL
02004 YS41MBA-M17.31.5 kmmultiple2004–202010 Sep 202043Disc.: MLS
Added on 17 January 2021
MPC · JPL
12004 YT41MBA-M17.5940 mmultiple2004–202115 Jan 2021127Disc.: MLS
Added on 17 January 2021
MPC · JPL
22004 YU41MBA-M17.9780 mmultiple2004–202011 Oct 202052Disc.: MLS
Added on 17 January 2021
MPC · JPL
02004 YV41MBA-O17.51.8 kmmultiple2004–202107 Feb 202139Disc.: MLS
Added on 17 January 2021
MPC · JPL
02004 YW41MBA-M17.6900 mmultiple2004–202014 Dec 202068Disc.: MLS
Added on 17 January 2021
MPC · JPL
02004 YY41MBA-O17.291.9 kmmultiple2004–202206 Jan 202223Disc.: Spacewatch
Added on 11 May 2021
MPC · JPL
02004 YZ41MBA-M18.0750 mmultiple2004–202118 Jan 202160Disc.: MLS
Added on 11 May 2021
MPC · JPL
02004 YA42MBA-M18.061.0 kmmultiple2004–202109 Dec 202171Disc.: MLS
Added on 21 August 2021
MPC · JPL
02004 YB42MBA-O17.641.7 kmmultiple2004–202118 Jan 202138Disc.: MLS
Added on 5 November 2021
MPC · JPL

References

  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. "List Of Jupiter Trojans". Minor Planet Center. 26 January 2021. Retrieved 1 February 2022.
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