List of unnumbered minor planets: 1997

From Wikipedia, the free encyclopedia

This is a partial list of unnumbered minor planets for principal provisional designations assigned between 1 January and 31 December 1997. As of March 2026, a total of 73 bodies remain unnumbered for this period.[1][2][3] 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 Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 AC11ATE20.67280 mmultiple1997–202418 Dec 2024173Disc.: NEAT/GEODSSMPC · JPL
01997 AB15MCA17.65820 mmultiple1997–202513 Jun 2025484Disc.: NEAT/GEODSSMPC · JPL
01997 AD23MBA-O17.731.5 kmmultiple1997-202527 Aug 202542Disc.: Mauna Kea Obs.
Alt.: 2018 BZ50		MPC · JPL
E1997 AT24MBA-O16.03.5 kmsingle5 days10 Jan 19976Disc.: Cerro TololoMPC · JPL
E1997 AU24MBA-O13.511 kmsingle5 days10 Jan 19976Disc.: Cerro TololoMPC · JPL

C

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
61997 CD17APO27.511 msingle2 days11 Feb 199721Disc.: SpacewatchMPC · JPL
E1997 CW29TNO6.5237 kmsingle27 days07 Mar 199711Disc.: Mauna Kea Obs.
LoUTNOs, plutino?		MPC · JPL

E

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
11997 EF10MBA-M19.83370 mmultiple1997-201909 Apar 201936Disc.: Spacewatch
Alt.: 2010 GX48, 2019 GG150		MPC · JPL
11997 ER12MBA-I18.6570 mmultiple1997–202024 Jun 202043Disc.: Spacewatch
Added on 22 July 2020
Alt.: 2020 JO11		MPC · JPL
01997 EL15MBA-M18.54880 mmultiple1997–202401 Sep 202434Disc.: SpacewatchMPC · JPL
61997 EN23AMO22.898 msingle21 days29 Mar 199717Disc.: SpacewatchMPC · JPL

G

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
11997 GB2MBA-O18.71.0 kmmultiple1997–202318 Mar 202399Disc.: SpacewatchMPC · JPL
01997 GF3MBA-O17.162.0 kmmultiple1997–202409 Jun 2024139Disc.: NEAT/GEODSSMPC · JPL
21997 GK3APO22.898 mmultiple1997–201402 May 201464Disc.: Spacewatch
AMO at MPC		MPC · JPL
01997 GQ25MCA18.36630 mmultiple1997–202130 Apr 202143Disc.: Spacewatch
Alt.: 2009 FQ29		MPC · JPL
01997 GX27MCA18.32750 mmultiple1997–202314 Oct 202383Disc.: Whipple Obs.MPC · JPL
61997 GD32APO21.5180 msingle22 days06 May 199790Disc.: Spacewatch
Potentially hazardous object		MPC · JPL
21997 GA45TNO8.698 kmmultiple1997–201724 Jun 201738Disc.: Mauna Kea Obs.
LoUTNOs, cubewano (hot)
Alt.: 2001 FH193		MPC · JPL

H

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
11997 HB4MBA-M18.15960 mmultiple1997–202319 Jun 202335Disc.: Spacewatch
Alt.: 2010 HY81		MPC · JPL

J

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 JS3MBA-O17.421.8 kmmultiple1997–202128 Nov 202154Disc.: Mauna Kea Obs.
Alt.: 2010 RA100		MPC · JPL

M

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
11997 MSAPO19.41480 mmultiple1997-202410 May 202455Disc.: LINEARMPC · JPL
11997 MD10CEN16.04.0 kmsingle137 days13 Nov 1997115Disc.: LINEAR
MCA at MPC		MPC · JPL

N

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
21997 NN4MCA21.41160 mmultiple1997–201630 Aug 201637Disc.: SpacewatchMPC · JPL
01997 NR5MBA-I19.0470 mmultiple1997–202027 Apr 202030Disc.: SpacewatchMPC · JPL
01997 NP9MBA-I19.61360 mmultiple1997–202113 Oct 202135Disc.: Spacewatch
Added on 5 November 2021
Alt.: 2014 OG7		MPC · JPL
01997 NP10MCA20.36250 mmultiple1997–202114 Nov 202198Disc.: Spacewatch
Alt.: 2021 RZ101		MPC · JPL

O

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
–1997 OHMCA19.0470 msingle4 days30 Jul 199731Disc.: ODASMPC · JPL

P

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
21997 PNAMO19.7410 mmultiple1997–200716 Aug 2007127Disc.: NEAT/GEODSSMPC · JPL

Q

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 QK1APO20.25340 mmultiple1997–202515 Oct 2025639Disc.: Mauna Kea Obs.
Potentially hazardous object		MPC · JPL
21997 QH4TNO7.0204 kmmultiple1997–201427 Sep 201430Disc.: Mauna Kea Obs.
LoUTNOs, cubewano (hot), BR-mag: 1.68; taxonomy: RR		MPC · JPL

R

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 RTAMO19.96390 mmultiple1997–202430 Sep 2024312Disc.: Ondřejov Obs.MPC · JPL
E1997 RY6TNO7.5162 kmsingle52 days29 Oct 199720Disc.: La Palma Obs.
LoUTNOs, cubewano (hot)		MPC · JPL
51997 RX9TNO8.391 kmmultiple1997–200008 Aug 200022Disc.: Palomar Obs.
LoUTNOs, other TNO		MPC · JPL
01997 RC12MBA-M18.3920 mmultiple1997–201902 Oct 201943Disc.: ODAS
Added on 22 July 2020		MPC · JPL
E1997 RL13TNO9.543 kmsingle1 day06 Sep 19974Disc.: Palomar Obs.
LoUTNOs, cubewano?		MPC · JPL

S

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 ST7MBA-O17.31.9 kmmultiple1997–202015 Oct 202049Disc.: Spacewatch
Added on 17 January 2021		MPC · JPL
01997 SY8MBA-I19.14520 mmultiple1997–202919 Jun 202569Disc.: SpacewatchMPC · JPL
01997 SY11MBA-M18.91410 mmultiple1997-202313 Jan 202334Disc.: SpacewatchMPC · JPL
11997 SB12MBA-I19.82320 mmultiple1997–202130 Nov 202141Disc.: Spacewatch
Alt.: 2014 UG164		MPC · JPL
01997 SX16MBA-M19.2430 mmultiple1997–202214 Sep 202255Disc.: Spacewatch
Alt.: 2018 VR92		MPC · JPL
–1997 SS19MBA-M18.8520 msingle12 days10 Oct 19979Disc.: SpacewatchMPC · JPL
01997 SK20MBA-O18.391 kmmultiple1997–202429 Nov 202435Disc.: Spacewatch
Added on 11 May 2021
Alt.: 2013 TB128		MPC · JPL
21997 SC26MBA-M18.93700 mmultiple1997-202202 Oct 202235Disc.: SpacewatchMPC · JPL
01997 SF26MBA-O16.772.5 kmmultiple1997–202110 Oct 2021116Disc.: Spacewatch
Alt.: 2013 RC1		MPC · JPL
01997 SB28MBA-M18.01.1 kmmultiple1997–201927 Nov 201983Disc.: Spacewatch
Alt.: 2015 XF307		MPC · JPL
01997 SN29MBA-I19.1460 mmultiple1997–202201 Aug 202252Disc.: Spacewatch
Alt.: 2015 OW28		MPC · JPL
11997 SV32MBA-I19.23420 mmultiple1997–202108 Dec 202144Disc.: Spacewatch
Alt.: 2014 TN38		MPC · JPL

T

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
51997 TQMBA-O18.57970 mmultiple1997-201726 Jan 201741Disc.: Mauna Kea Obs.
Added on 21 August 2021		MPC · JPL
01997 TL8MBA-I18.75530 mmultiple1997–202109 Oct 202164Disc.: Spacewatch
Alt.: 2014 RW32		MPC · JPL
E1997 TX8TNO8.594 kmsingle24 days29 Oct 199712Disc.: Palomar Obs.
LoUTNOs, plutino?		MPC · JPL
01997 TU12MBA-M18.28680 mmultiple1997–202224 Dec 202262Disc.: SpacewatchMPC · JPL
01997 TO15MCA18.7540 mmultiple1997–201907 Apr 201955Disc.: Spacewatch
Alt.: 2010 TN181		MPC · JPL
71997 TZ16APO24.545 msingle3 days12 Oct 199727Disc.: SpacewatchMPC · JPL
71997 TC25APO24.643 msingle23 days23 Oct 199717Disc.: SpacewatchMPC · JPL
01997 TT25AMO19.39490 mmultiple1997–202617 Feb 2026213Disc.: Xinglong Stn.MPC · JPL
01997 TS30MBA-I19.0490 mmultiple1997–202229 Aug 202236Disc.: SpacewatchMPC · JPL

U

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
61997 URAPO23.281 msingle21 days12 Nov 1997143Disc.: LINEAR
AMO at MPC		MPC · JPL
01997 UE7MBA-O16.82.4 kmmultiple1997–202108 Sep 202158Disc.: Mauna Kea Obs.
Added on 29 January 2022		MPC · JPL
01997 UT9MCA19.61370 mmultiple1997–202304 Oct 2023150Disc.: NEAT/GEODSS
Alt.: 2010 TT19		MPC · JPL
81997 UZ10AMO23.089 msingle14 days12 Nov 199736Disc.: LINEARMPC · JPL
31997 UA11APO25.232 msingle13 days08 Nov 199729Disc.: LINEARMPC · JPL
11997 UR14MBA-O16.952.3 kmmultiple1997–202318 Mar 202328Disc.: Spacewatch
Alt.: 2014 WP303		MPC · JPL
11997 UR19MBA-M18.5840 mmultiple1997–201804 Oct 201826Disc.: SpacewatchMPC · JPL
E1997 UG25TNO8.568 kmsingle1 day27 Oct 19974Disc.: La Palma Obs.
LoUTNOs, cubewano?		MPC · JPL

V

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
81997 VGAMO22.2130 msingle10 days09 Nov 199774Disc.: LINEARMPC · JPL
21997 VN4AMO23.378 mmultiple1997–201608 Nov 2016140Disc.: LINEARMPC · JPL
81997 VG6APO19.6430 msingle15 days23 Nov 199750Disc.: LINEAR
Potentially hazardous object		MPC · JPL

W

U Designation Class Physical Observations Description and notes Ref
H D Opp. Arc Last Used
01997 WE14MBA-M17.781.1 kmmultiple1997–202316 Dec 202351Disc.: SpacewatchMPC · JPL
11997 WQ23APO20.8250 mmultiple1997–202018 Dec 2020185Disc.: LINEAR
Potentially hazardous object		MPC · JPL

X

Y

References

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