List of unnumbered minor planets: 1997

This is a partial list of unnumbered minor planets for principal provisional designations assigned between 1 January and 31 December 1997. As of June 2020^[update], a total of 221 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

A

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

3	1997 AC11	ATE	20.5	280 m	multiple	1997–2017	28 Dec 2017	148	Disc.: NEAT/GEODSS	MPC · JPL
0	1997 AH11	MBA-O	16.6	2.7 km	multiple	1997–2019	15 Nov 2019	55	Disc.: Spacewatch	MPC · JPL
2	1997 AZ11	MBA-M	17.1	1.1 km	multiple	1997–2018	20 Mar 2018	51	Disc.: Spacewatch	MPC · JPL
0	1997 AF12	MBA-M	17.0	1.7 km	multiple	1997–2017	18 Dec 2017	45	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
1	1997 AB15	MCA	17.7	860 m	multiple	1997–2019	06 Jul 2019	131	Disc.: NEAT/GEODSS	MPC · JPL
–	1997 AD23	MBA-O	17.5	1.8 km	single	2 days	13 Jan 1997	5	Disc.: Mauna Kea Obs.	MPC · JPL
E	1997 AT24	MBA-O	16.0	3.5 km	single	5 days	10 Jan 1997	6	Disc.: Cerro Tololo	MPC · JPL
E	1997 AU24	MBA-O	13.5	11 km	single	5 days	10 Jan 1997	6	Disc.: Cerro Tololo	MPC · JPL

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B

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 BH5	MBA-M	17.2	1.5 km	multiple	1997–2020	20 Jul 2020	69	Disc.: Spacewatch Alt.: 2010 AC32	MPC · JPL
0	1997 BG6	MBA-M	16.7	2.5 km	multiple	1997–2018	05 Oct 2018	93	Disc.: Spacewatch Alt.: 2014 WB375	MPC · JPL

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C

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 CE	MBA-I	17.6	900 m	multiple	1995–2019	03 Dec 2019	130	Disc.: Spacewatch Alt.: 1995 OS16, 2012 RQ21	MPC · JPL
0	1997 CH	MBA-I	17.8	820 m	multiple	1997–2020	15 Apr 2020	70	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
0	1997 CW3	MBA-M	17.3	1.0 km	multiple	1997–2019	28 Aug 2019	88	Disc.: Spacewatch	MPC · JPL
1	1997 CB14	MBA-M	17.9	780 m	multiple	1997–2018	16 Mar 2018	48	Disc.: Spacewatch Alt.: 2014 FJ32	MPC · JPL
0	1997 CD14	MBA-O	16.3	3.1 km	multiple	1997–2020	18 Jul 2020	110	Disc.: Spacewatch	MPC · JPL
6	1997 CD17	APO	27.5	11 m	single	2 days	11 Feb 1997	21	Disc.: Spacewatch	MPC · JPL
0	1997 CU20	MBA-O	16.6	2.7 km	multiple	1997–2020	12 Apr 2020	73	Disc.: Spacewatch Alt.: 2014 BQ41	MPC · JPL
–	1997 CD21	MBA-I	18.5	590 m	single	9 days	15 Feb 1997	9	Disc.: Spacewatch	MPC · JPL
1	1997 CJ24	MBA-I	18.2	680 m	multiple	1997–2019	06 Mar 2019	70	Disc.: Spacewatch	MPC · JPL
2	1997 CT29	TNO	6.5	222 km	multiple	1997–2018	09 Dec 2018	54	Disc.: Mauna Kea Obs. LoUTNOs, cubewano (cold)	MPC · JPL
E	1997 CW29	TNO	6.5	222 km	single	27 days	07 Mar 1997	11	Disc.: Mauna Kea Obs. LoUTNOs, plutino?	MPC · JPL
0	1997 CA31	MBA-O	16.8	2.4 km	multiple	1997–2018	05 Feb 2018	105	Disc.: Spacewatch	MPC · JPL
0	1997 CB31	MBA-O	16.7	2.5 km	multiple	1997–2019	08 Feb 2019	95	Disc.: Spacewatch	MPC · JPL
0	1997 CC31	MBA-M	16.5	2.8 km	multiple	1997–2020	02 Feb 2020	83	Disc.: Spacewatch	MPC · JPL
2	1997 CD31	MBA-M	17.6	900 m	multiple	1997–2019	01 Jun 2019	51	Disc.: Spacewatch	MPC · JPL

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E

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 EM1	MBA-I	17.8	820 m	multiple	1997–2020	21 Jul 2020	106	Disc.: Spacewatch Alt.: 2003 WF164, 2014 WS146	MPC · JPL
0	1997 EF5	MBA-M	17.3	1.9 km	multiple	1997–2020	29 Apr 2020	75	Disc.: Spacewatch Alt.: 2010 EC59	MPC · JPL
0	1997 EN6	MBA-I	18.3	650 m	multiple	1997–2018	10 Dec 2018	67	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
–	1997 EF10	MBA-M	19.6	510 m	single	6 days	10 Mar 1997	8	Disc.: Spacewatch	MPC · JPL
0	1997 EJ10	MBA-O	16.3	3.1 km	multiple	1997–2020	19 Mar 2020	121	Disc.: Spacewatch	MPC · JPL
0	1997 ER12	MBA-I	18.6	570 m	multiple	1997–2020	26 May 2020	37	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
–	1997 EL15	MBA-M	18.8	730 m	single	11 days	15 Mar 1997	9	Disc.: Spacewatch	MPC · JPL
1	1997 EV16	HUN	18.3	650 m	multiple	1997–2020	22 May 2020	83	Disc.: Spacewatch Alt.: 2018 TY14	MPC · JPL
0	1997 EH17	MBA-O	17.0	2.2 km	multiple	1997–2020	21 May 2020	33	Disc.: Spacewatch	MPC · JPL
0	1997 EP21	MBA-O	17.1	2.1 km	multiple	1997–2020	15 May 2020	57	Disc.: Spacewatch	MPC · JPL
3	1997 EV22	MBA-M	18.1	1.3 km	multiple	1997–2015	30 Mar 2015	24	Disc.: Spacewatch	MPC · JPL
0	1997 EX22	MBA-O	16.2	3.2 km	multiple	1994–2020	27 Feb 2020	63	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
6	1997 EN23	AMO	22.8	98 m	single	21 days	29 Mar 1997	17	Disc.: Spacewatch	MPC · JPL
0	1997 EB25	MBA-M	17.3	1.9 km	multiple	1997–2020	23 Jan 2020	58	Disc.: Spacewatch	MPC · JPL
0	1997 EG60	MBA-M	17.2	1.5 km	multiple	1997–2018	20 Feb 2018	52	Disc.: Spacewatch Alt.: 2015 MV52	MPC · JPL
0	1997 EJ60	MBA-O	16.0	3.5 km	multiple	1997–2020	01 Jul 2020	123	Disc.: Spacewatch	MPC · JPL
0	1997 EK60	MBA-O	16.5	2.8 km	multiple	1997–2020	25 May 2020	157	Disc.: Spacewatch	MPC · JPL
0	1997 EL60	MBA-I	18.0	750 m	multiple	1997–2020	19 Apr 2020	78	Disc.: Spacewatch	MPC · JPL

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G

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

2	1997 GB2	MBA-O	17.9	1.5 km	multiple	1997–2018	23 Apr 2018	87	Disc.: Spacewatch	MPC · JPL
0	1997 GH2	MBA-M	17.0	1.2 km	multiple	1997–2018	20 Mar 2018	54	Disc.: Spacewatch Alt.: 2008 YR31, 2016 WQ20	MPC · JPL
0	1997 GJ2	MBA-M	17.5	1.3 km	multiple	1997–2019	22 Jun 2019	48	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
1	1997 GF3	MBA-O	17.0	2.2 km	multiple	1997–2019	24 Aug 2019	88	Disc.: NEAT/GEODSS	MPC · JPL
2	1997 GK3	APO	22.8	98 m	multiple	1997–2014	02 May 2014	64	Disc.: Spacewatch AMO at MPC	MPC · JPL
1	1997 GL3	APO	19.1	540 m	multiple	1997–2014	31 May 2014	533	Disc.: LINEAR Potentially hazardous object	MPC · JPL
0	1997 GU24	MBA-I	17.8	820 m	multiple	1997–2019	24 Dec 2019	100	Disc.: Spacewatch Alt.: 2005 UK453	MPC · JPL
2	1997 GQ25	MCA	18.5	590 m	multiple	1997–2017	07 Apr 2017	37	Disc.: Spacewatch Alt.: 2009 FQ29	MPC · JPL
0	1997 GZ26	MBA-O	16.7	2.5 km	multiple	1997–2019	26 Jul 2019	84	Disc.: Spacewatch	MPC · JPL
0	1997 GL27	MBA-M	17.8	1.2 km	multiple	1997–2019	25 Jul 2019	68	Disc.: Spacewatch	MPC · JPL
2	1997 GX27	MCA	17.8	820 m	multiple	1997–2004	15 May 2004	68	Disc.: Whipple Obs.	MPC · JPL
2	1997 GK28	MBA-M	17.9	1.1 km	multiple	1997–2015	12 Sep 2015	33	Disc.: Spacewatch	MPC · JPL
6	1997 GD32	APO	21.5	180 m	single	22 days	06 May 1997	90	Disc.: Spacewatch Potentially hazardous object	MPC · JPL
2	1997 GA45	TNO	8.6	84 km	multiple	1997–2017	24 Jun 2017	38	Disc.: Mauna Kea Obs. LoUTNOs, cubewano (hot) Alt.: 2001 FH193	MPC · JPL

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H

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 HM1	MBA-I	17.8	820 m	multiple	1997–2020	25 Feb 2020	89	Disc.: Spacewatch Alt.: 2005 JB76	MPC · JPL
4	1997 HB4	MBA-M	18.2	960 m	multiple	1997–2010	05 May 2010	16	Disc.: Spacewatch Alt.: 2010 HY81	MPC · JPL
0	1997 HM18	MBA-I	17.6	900 m	multiple	1997–2019	29 Jul 2019	91	Disc.: Spacewatch	MPC · JPL

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J

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 JX2	MBA-O	16.2	3.2 km	multiple	1997–2018	11 Apr 2018	101	Disc.: Mauna Kea Obs.	MPC · JPL
3	1997 JS3	MBA-O	17.1	2.1 km	multiple	1997–2015	09 Sep 2015	38	Disc.: Mauna Kea Obs. Alt.: 2010 RA100	MPC · JPL
0	1997 JP5	MBA-I	17.2	1.1 km	multiple	1997–2019	06 Jul 2019	100	Disc.: Spacewatch	MPC · JPL
0	1997 JN6	MBA-I	17.6	900 m	multiple	1997–2020	14 Jul 2020	151	Disc.: Spacewatch	MPC · JPL
0	1997 JN19	MBA-O	15.8	3.9 km	multiple	1997–2020	24 Jun 2020	161	Disc.: Spacewatch	MPC · JPL
0	1997 JO19	MBA-M	17.6	1.7 km	multiple	1997–2019	09 Apr 2019	38	Disc.: Spacewatch	MPC · JPL

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K

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 KP	MBA-M	17.0	2.2 km	multiple	1997–2019	02 Jul 2019	73	Disc.: Whipple Obs.	MPC · JPL
0	1997 KZ2	MBA-O	15.8	3.9 km	multiple	1997–2020	21 Jul 2020	119	Disc.: Spacewatch	MPC · JPL
0	1997 KP4	MBA-I	18.2	680 m	multiple	1997–2019	10 Jul 2019	76	Disc.: DB Missing Added on 22 July 2020	MPC · JPL

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L

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 LA1	MBA-I	18.4	620 m	multiple	1997–2018	16 May 2018	55	Disc.: Spacewatch	MPC · JPL

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M

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 MN	MBA-O	15.5	4.4 km	multiple	1997–2018	27 Mar 2018	43	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
7	1997 MS	APO	19.1	540 m	single	17 days	12 Jul 1997	46	Disc.: LINEAR	MPC · JPL
1	1997 MD10	CEN	16.0	3.0 km	single	137 days	13 Nov 1997	115	Disc.: LINEAR MCA at MPC	MPC · JPL
0	1997 MM12	MBA-O	17.4	1.8 km	multiple	1997–2019	20 Dec 2019	45	Disc.: DB Missing Added on 22 July 2020	MPC · JPL

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N

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 NE1	MBA-M	17.4	980 m	multiple	1997–2018	13 Sep 2018	72	Disc.: Spacewatch Alt.: 2014 QF376	MPC · JPL
0	1997 NT2	MBA-M	16.3	3.1 km	multiple	1997–2020	19 Jul 2020	97	Disc.: Spacewatch	MPC · JPL
0	1997 NT3	MBA-M	17.6	900 m	multiple	1997–2020	21 Mar 2020	65	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
0	1997 NV3	MBA-O	16.8	2.4 km	multiple	1997–2018	15 Oct 2018	92	Disc.: Spacewatch Alt.: 2017 HL31	MPC · JPL
–	1997 NN4	MCA	21.5	150 m	single	6 days	14 Jul 1997	10	Disc.: Spacewatch	MPC · JPL
0	1997 NR5	MBA-I	19.0	470 m	multiple	1997–2020	27 Apr 2020	30	Disc.: Spacewatch	MPC · JPL
1	1997 NW9	MBA-M	17.6	900 m	multiple	1997–2020	16 Feb 2020	78	Disc.: Spacewatch	MPC · JPL
4	1997 NP10	MCA	20.5	240 m	single	59 days	10 Sep 1997	60	Disc.: Spacewatch	MPC · JPL
0	1997 ND12	MBA-O	15.8	3.9 km	multiple	1997–2020	11 Jul 2020	100	Disc.: Spacewatch	MPC · JPL
2	1997 NE12	MBA-I	18.9	490 m	multiple	1997–2018	17 Nov 2018	46	Disc.: Spacewatch Alt.: 2018 RM47	MPC · JPL

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O

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

–	1997 OH	MCA	19.0	470 m	single	4 days	30 Jul 1997	31	Disc.: ODAS	MPC · JPL
0	1997 OJ3	MBA-M	18.3	650 m	multiple	1997–2019	10 Jan 2019	38	Disc.: Spacewatch	MPC · JPL
0	1997 OK3	MBA-O	16.7	2.5 km	multiple	1997–2019	29 Jul 2019	45	Disc.: Spacewatch	MPC · JPL

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P

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

2	1997 PN	AMO	19.7	410 m	multiple	1997–2007	16 Aug 2007	127	Disc.: NEAT/GEODSS	MPC · JPL
0	1997 PG4	MBA-M	18.0	1.1 km	multiple	1997–2019	16 Dec 2019	117	Disc.: Spacewatch	MPC · JPL
0	1997 PQ6	MBA-M	16.5	2.8 km	multiple	1997–2019	06 May 2019	81	Disc.: Spacewatch	MPC · JPL
0	1997 PR6	MBA-I	18.0	750 m	multiple	1997–2020	26 Jan 2020	58	Disc.: Spacewatch	MPC · JPL

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Q

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 QK1	APO	20.3	310 m	multiple	1997–2011	09 Oct 2011	181	Disc.: Mauna Kea Obs. Potentially hazardous object	MPC · JPL
2	1997 QH4	TNO	7.0	176 km	multiple	1997–2014	27 Sep 2014	30	Disc.: Mauna Kea Obs. LoUTNOs, cubewano (hot), BR-mag: 1.68; taxonomy: RR	MPC · JPL

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R

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

1	1997 RT	AMO	19.8	390 m	multiple	1997–2007	12 Jun 2007	310	Disc.: Ondřejov Obs.	MPC · JPL
0	1997 RO1	MCA	17.5	940 m	multiple	1997–2019	28 Jul 2019	114	Disc.: Ondřejov Obs. Alt.: 2012 RV6	MPC · JPL
E	1997 RY6	TNO	7.5	140 km	single	52 days	29 Oct 1997	20	Disc.: La Palma Obs. LoUTNOs, cubewano (hot)	MPC · JPL
0	1997 RN7	MCA	17.7	1.2 km	multiple	1997–2020	23 Mar 2020	107	Disc.: NRC Alt.: 1997 RL10, 2014 QQ419	MPC · JPL
5	1997 RX9	TNO	8.3	97 km	multiple	1997–2000	08 Aug 2000	22	Disc.: Palomar Obs. LoUTNOs, cubewano (hot)	MPC · JPL
0	1997 RC12	MBA-M	18.3	920 m	multiple	1997–2019	02 Oct 2019	43	Disc.: ODAS Added on 22 July 2020	MPC · JPL
E	1997 RL13	TNO	9.5	56 km	single	1 day	06 Sep 1997	4	Disc.: Palomar Obs. LoUTNOs, cubewano (hot)	MPC · JPL

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S

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 SU3	MBA-I	18.7	540 m	multiple	1997–2020	02 Feb 2020	41	Disc.: Spacewatch	MPC · JPL
1	1997 SX5	MBA-I	18.6	570 m	multiple	1997–2020	20 Apr 2020	52	Disc.: Spacewatch Alt.: 2014 RE20	MPC · JPL
0	1997 SX6	MBA-O	16.8	2.4 km	multiple	1997–2019	04 Oct 2019	82	Disc.: Spacewatch Alt.: 2014 UG3	MPC · JPL
0	1997 SK7	MBA-O	17.2	2.2 km	multiple	1997–2019	25 Jul 2019	54	Disc.: Spacewatch Alt.: 2010 ED152	MPC · JPL
1	1997 SV7	MBA-I	18.2	680 m	multiple	1997–2014	19 Sep 2014	37	Disc.: Spacewatch Alt.: 2014 OR217	MPC · JPL
0	1997 SX7	MBA-M	17.0	2.2 km	multiple	1997–2020	18 Jul 2020	96	Disc.: Spacewatch	MPC · JPL
2	1997 SY8	MBA-I	18.8	520 m	multiple	1997–2020	27 Jan 2020	30	Disc.: Spacewatch	MPC · JPL
1	1997 SB9	MBA-M	17.5	1.3 km	multiple	1997–2019	17 Dec 2019	58	Disc.: Spacewatch	MPC · JPL
0	1997 SS9	MBA-I	18.0	750 m	multiple	1997–2019	27 May 2019	68	Disc.: Spacewatch Alt.: 2011 DF16	MPC · JPL
2	1997 SZ₁₀	TNO	8.5	88 km	multiple	1997–2008	24 Oct 2008	29	Disc.: Mauna Kea Obs. LoUTNOs, twotino, BR-mag: 1.79; taxonomy: RR	MPC · JPL
2	1997 ST11	MBA-I	18.5	590 m	multiple	1997–2019	02 May 2019	23	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
0	1997 SW11	MBA-I	17.9	780 m	multiple	1997–2018	12 Feb 2018	75	Disc.: Spacewatch	MPC · JPL
–	1997 SY11	MBA-M	19.3	410 m	single	7 days	04 Oct 1997	8	Disc.: Spacewatch	MPC · JPL
D	1997 SA12	HIL	16.1	3.4 km	single	8 days	05 Oct 1997	9	Disc.: Spacewatch Alt.: 1997 TD30	MPC · JPL
2	1997 SB12	MBA-I	19.6	360 m	multiple	1997–2014	27 Oct 2014	25	Disc.: Spacewatch Alt.: 2014 UG164	MPC · JPL
0	1997 SH12	MBA-M	17.9	1.1 km	multiple	1997–2020	19 Jan 2020	110	Disc.: Spacewatch Alt.: 2010 RH81, 2010 RU83	MPC · JPL
0	1997 SS12	MBA-M	17.4	1.4 km	multiple	1997–2018	11 Jul 2018	48	Disc.: Spacewatch Alt.: 2014 QE440	MPC · JPL
0	1997 SY12	MBA-O	17.5	1.8 km	multiple	1997–2018	05 Oct 2018	50	Disc.: Spacewatch Alt.: 2013 TJ140	MPC · JPL
1	1997 SM13	MBA-I	18.1	710 m	multiple	1997–2020	20 Jul 2020	46	Disc.: Spacewatch	MPC · JPL
0	1997 SS14	MBA-O	17.0	2.2 km	multiple	1997–2019	09 Jan 2019	70	Disc.: Spacewatch	MPC · JPL
1	1997 SW14	MBA-I	18.8	520 m	multiple	1997–2016	08 Jan 2016	61	Disc.: Spacewatch Alt.: 2015 WZ5	MPC · JPL
0	1997 SU16	MBA-O	17.2	2.0 km	multiple	1997–2020	26 Apr 2020	67	Disc.: Spacewatch	MPC · JPL
3	1997 SX16	MBA-M	19.2	430 m	multiple	1997–2018	17 Nov 2018	37	Disc.: Spacewatch Alt.: 2018 VR92	MPC · JPL
0	1997 SB17	MBA-M	17.7	860 m	multiple	1997–2020	23 Jun 2020	48	Disc.: Mauna Kea Obs.	MPC · JPL
0	1997 SC19	MBA-M	17.3	1.5 km	multiple	1997–2019	03 Dec 2019	75	Disc.: Spacewatch Alt.: 2010 UK45	MPC · JPL
–	1997 SS19	MBA-M	18.8	520 m	single	12 days	10 Oct 1997	9	Disc.: Spacewatch	MPC · JPL
0	1997 ST19	MBA-I	18.3	650 m	multiple	1993–2019	09 Apr 2019	55	Disc.: Spacewatch Alt.: 1993 QF11	MPC · JPL
0	1997 SE20	MBA-I	17.7	860 m	multiple	1997–2020	14 Jul 2020	140	Disc.: Spacewatch Alt.: 2007 RW6	MPC · JPL
0	1997 SO22	MBA-M	17.7	1.6 km	multiple	1997–2016	18 Nov 2016	35	Disc.: Spacewatch	MPC · JPL
2	1997 SP22	MBA-M	17.7	1.6 km	multiple	1997–2016	27 Dec 2016	30	Disc.: Spacewatch	MPC · JPL
0	1997 SX22	MBA-O	16.6	2.7 km	multiple	1997–2019	02 Dec 2019	53	Disc.: Spacewatch	MPC · JPL
0	1997 SY22	MBA-I	17.7	860 m	multiple	1997–2019	01 Nov 2019	135	Disc.: Spacewatch Alt.: 2004 PW22, 2015 TN1	MPC · JPL
3	1997 SD23	MBA-I	18.6	570 m	multiple	1997–2016	28 Sep 2016	32	Disc.: Spacewatch Alt.: 2016 SP45	MPC · JPL
0	1997 SE24	MBA-O	16.2	3.2 km	multiple	1997–2019	29 Sep 2019	88	Disc.: Spacewatch Alt.: 2014 ST348, 2017 DW92	MPC · JPL
–	1997 SC26	MBA-M	18.8	730 m	single	12 days	10 Oct 1997	9	Disc.: Spacewatch	MPC · JPL
2	1997 SF26	MBA-O	16.7	2.5 km	multiple	1997–2013	21 Oct 2013	53	Disc.: Spacewatch Alt.: 2013 RC1	MPC · JPL
0	1997 SJ26	MBA-M	17.5	1.3 km	multiple	1997–2019	21 Sep 2019	181	Disc.: Spacewatch	MPC · JPL
0	1997 SP26	MBA-O	16.3	3.1 km	multiple	1997–2019	27 Oct 2019	82	Disc.: Spacewatch Alt.: 2017 HJ19	MPC · JPL
1	1997 SR26	MBA-M	17.5	940 m	multiple	1997–2020	19 Apr 2020	79	Disc.: Spacewatch Alt.: 2008 EO90	MPC · JPL
0	1997 SB28	MBA-M	18.0	1.1 km	multiple	1997–2019	27 Nov 2019	79	Disc.: Spacewatch Alt.: 2015 XF307	MPC · JPL
0	1997 SX28	MBA-M	17.9	1.1 km	multiple	1997–2019	30 Nov 2019	62	Disc.: Spacewatch Alt.: 2019 NW22	MPC · JPL
2	1997 SN29	MBA-I	18.8	520 m	multiple	1997–2015	02 Nov 2015	36	Disc.: Spacewatch Alt.: 2015 OW28	MPC · JPL
0	1997 SC32	MBA-M	17.5	1.3 km	multiple	1997–2020	23 Jan 2020	102	Disc.: Bergisch Gladbach Alt.: 2018 RD34	MPC · JPL
1	1997 SS32	MBA-O	17.0	2.2 km	multiple	1997–2019	29 Mar 2019	43	Disc.: Spacewatch	MPC · JPL
4	1997 SV32	MBA-I	19.1	450 m	multiple	1997–2014	13 Oct 2014	21	Disc.: Spacewatch Alt.: 2014 TN38	MPC · JPL
3	1997 SA33	MBA-M	17.8	820 m	multiple	1997–2020	22 Mar 2020	33	Disc.: Spacewatch	MPC · JPL
0	1997 SW35	MBA-O	15.6	4.2 km	multiple	1997–2018	02 Jun 2018	102	Disc.: Mauna Kea Obs.	MPC · JPL
0	1997 SX35	MBA-M	17.4	980 m	multiple	1997–2019	23 Apr 2019	96	Disc.: Spacewatch	MPC · JPL
0	1997 SY35	MBA-M	17.1	2.1 km	multiple	1997–2020	29 Jun 2020	87	Disc.: Spacewatch	MPC · JPL
0	1997 SZ35	MBA-O	16.8	2.4 km	multiple	1997–2020	23 Mar 2020	91	Disc.: Spacewatch	MPC · JPL

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T

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

E	1997 TG	MBA-M	—	—	single	2 days	03 Oct 1997	16	Disc.: Mauna Kea Obs.	MPC · JPL
6	1997 TH	MBA-O	16.7	2.5 km	multiple	1997–2003	18 Oct 2003	22	Disc.: Mauna Kea Obs. Alt.: 2003 UE31	MPC · JPL
0	1997 TM	MBA-O	16.7	2.5 km	multiple	1997–2020	26 Jan 2020	59	Disc.: Mauna Kea Obs.	MPC · JPL
E	1997 TN	MBA-O	—	—	single	2 days	04 Oct 1997	18	Disc.: Mauna Kea Obs.	MPC · JPL
0	1997 TD3	MBA-M	17.2	2.0 km	multiple	1997–2020	18 Jul 2020	46	Disc.: ODAS Alt.: 2011 VJ9	MPC · JPL
1	1997 TF6	MBA-I	18.0	750 m	multiple	1997–2016	06 Mar 2016	62	Disc.: ODAS	MPC · JPL
0	1997 TC8	MBA-O	17.0	2.2 km	multiple	1997–2020	25 Jan 2020	37	Disc.: Spacewatch	MPC · JPL
3	1997 TL8	MBA-I	18.7	540 m	multiple	1997–2014	20 Sep 2014	34	Disc.: Spacewatch Alt.: 2014 RW32	MPC · JPL
1	1997 TP8	MBA-I	18.3	650 m	multiple	1997–2019	02 Jul 2019	32	Disc.: Spacewatch	MPC · JPL
0	1997 TU8	MBA-I	18.5	590 m	multiple	1997–2020	22 Apr 2020	61	Disc.: Mauna Kea Obs. Alt.: 2004 VJ3, 2014 UM164	MPC · JPL
E	1997 TX8	TNO	8.5	88 km	single	24 days	29 Oct 1997	12	Disc.: Palomar Obs. LoUTNOs, plutino?	MPC · JPL
0	1997 TJ9	MBA-M	16.5	2.1 km	multiple	1997–2020	31 Jan 2020	160	Disc.: Spacewatch Alt.: 2000 LD6, 2010 VT145, 2014 UL212, 2017 KL33	MPC · JPL
0	1997 TW11	MBA-O	16.0	3.5 km	multiple	1997–2020	09 Jun 2020	66	Disc.: Xinglong Stn. Alt.: 2014 SC239	MPC · JPL
0	1997 TJ12	MBA-O	16.0	3.5 km	multiple	1997–2019	19 Sep 2019	114	Disc.: Spacewatch	MPC · JPL
1	1997 TU12	MBA-M	18.2	680 m	multiple	1997–2014	29 Dec 2014	46	Disc.: Spacewatch	MPC · JPL
0	1997 TO15	MCA	18.7	540 m	multiple	1997–2019	07 Apr 2019	55	Disc.: Spacewatch Alt.: 2010 TN181	MPC · JPL
7	1997 TZ16	APO	24.5	45 m	single	3 days	12 Oct 1997	27	Disc.: Spacewatch	MPC · JPL
0	1997 TA23	MBA-M	17.9	1.1 km	multiple	1997–2019	19 Nov 2019	90	Disc.: Spacewatch Alt.: 2010 TT60	MPC · JPL
1	1997 TO23	MBA-M	17.1	1.1 km	multiple	1997–2017	03 Jul 2017	29	Disc.: Spacewatch	MPC · JPL
0	1997 TV23	MBA-I	18.0	750 m	multiple	1997–2020	31 Jan 2020	64	Disc.: Spacewatch	MPC · JPL
7	1997 TC25	APO	24.6	43 m	single	23 days	23 Oct 1997	17	Disc.: Spacewatch	MPC · JPL
1	1997 TT25	AMO	19.3	490 m	multiple	1997–2020	05 Mar 2020	168	Disc.: Xinglong Stn.	MPC · JPL
3	1997 TS30	MBA-I	18.9	490 m	multiple	1997–2015	06 Nov 2015	24	Disc.: Spacewatch	MPC · JPL
0	1997 TT30	MBA-I	18.6	570 m	multiple	1997–2019	20 Aug 2019	95	Disc.: Spacewatch	MPC · JPL
0	1997 TU30	MBA-M	17.5	1.3 km	multiple	1997–2019	28 Nov 2019	93	Disc.: Spacewatch	MPC · JPL

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U

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

6	1997 UR	APO	23.2	81 m	single	21 days	12 Nov 1997	143	Disc.: LINEAR AMO at MPC	MPC · JPL
1	1997 UH3	MBA-I	17.6	900 m	multiple	1997–2020	18 Jan 2020	183	Disc.: Xinglong Stn. Alt.: 2008 UW174	MPC · JPL
0	1997 UK6	MBA-O	17.3	1.9 km	multiple	1997–2019	08 May 2019	57	Disc.: Spacewatch	MPC · JPL
E	1997 UW6	MBA-M	16.5	2.8 km	single	9 days	01 Nov 1997	8	Disc.: Spacewatch	MPC · JPL
2	1997 UT9	MCA	19.6	360 m	multiple	1997–2010	03 Dec 2010	113	Disc.: NEAT/GEODSS Alt.: 2010 TT19	MPC · JPL
8	1997 UZ10	AMO	23.0	89 m	single	14 days	12 Nov 1997	36	Disc.: LINEAR	MPC · JPL
3	1997 UA11	APO	25.2	32 m	single	13 days	08 Nov 1997	29	Disc.: LINEAR	MPC · JPL
0	1997 UG12	MBA-I	18.1	710 m	multiple	1997–2020	04 Jan 2020	110	Disc.: Spacewatch Alt.: 2015 RQ97	MPC · JPL
0	1997 UO12	MBA-M	18.3	920 m	multiple	1997–2018	05 Oct 2018	56	Disc.: Spacewatch Alt.: 2014 TE2	MPC · JPL
0	1997 UV12	MBA-O	16.5	2.8 km	multiple	1997–2018	06 Oct 2018	89	Disc.: Spacewatch	MPC · JPL
0	1997 UL13	MBA-O	16.7	2.5 km	multiple	1992–2019	21 Dec 2019	67	Disc.: Spacewatch	MPC · JPL
0	1997 UN13	MBA-I	17.9	780 m	multiple	1997–2018	13 Nov 2018	61	Disc.: Spacewatch	MPC · JPL
3	1997 UR14	MBA-O	16.9	2.3 km	multiple	1997–2014	25 Nov 2014	25	Disc.: Spacewatch Alt.: 2014 WP303	MPC · JPL
0	1997 UQ15	MBA-I	17.8	820 m	multiple	1997–2019	29 May 2019	38	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
0	1997 UV15	MBA-I	18.0	750 m	multiple	1997–2020	20 May 2020	71	Disc.: Spacewatch Alt.: 2014 WA246	MPC · JPL
2	1997 UX15	MBA-M	17.6	1.7 km	multiple	1997–2015	06 Nov 2015	39	Disc.: Spacewatch	MPC · JPL
0	1997 UM16	MBA-O	17.2	2.0 km	multiple	1997–2019	03 Dec 2019	54	Disc.: Spacewatch	MPC · JPL
0	1997 UX18	MBA-I	17.9	780 m	multiple	1997–2020	18 Jul 2020	91	Disc.: Spacewatch	MPC · JPL
2	1997 UR19	MBA-M	18.5	840 m	multiple	1997–2018	04 Oct 2018	26	Disc.: Spacewatch	MPC · JPL
0	1997 UA20	MBA-I	17.4	980 m	multiple	1997–2019	25 Nov 2019	82	Disc.: Spacewatch	MPC · JPL
0	1997 UF23	MBA-O	16.5	2.8 km	multiple	1997–2020	31 Jan 2020	88	Disc.: Anderson Mesa	MPC · JPL
E	1997 UG25	TNO	8.5	88 km	single	1 day	27 Oct 1997	4	Disc.: La Palma Obs. LoUTNOs, cubewano (cold)	MPC · JPL

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V

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

8	1997 VG	AMO	22.2	130 m	single	10 days	09 Nov 1997	74	Disc.: LINEAR	MPC · JPL
2	1997 VN4	AMO	23.3	78 m	multiple	1997–2016	08 Nov 2016	140	Disc.: LINEAR	MPC · JPL
8	1997 VG6	APO	19.6	430 m	single	15 days	23 Nov 1997	50	Disc.: LINEAR Potentially hazardous object	MPC · JPL
0	1997 VS9	MBA-O	17.3	1.9 km	multiple	1997–2018	14 Sep 2018	53	Disc.: Spacewatch	MPC · JPL

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W

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

0	1997 WC6	MBA-O	16.8	2.4 km	multiple	1997–2019	20 Dec 2019	59	Disc.: Spacewatch	MPC · JPL
0	1997 WJ6	MBA-O	17.3	1.9 km	multiple	1997–2016	04 Sep 2016	49	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
–	1997 WT6	MBA-O	17.0	2.2 km	single	7 days	30 Nov 1997	9	Disc.: Spacewatch	MPC · JPL
0	1997 WK10	MBA-O	16.7	2.5 km	multiple	1997–2019	06 Apr 2019	94	Disc.: Spacewatch	MPC · JPL
0	1997 WP13	MBA-M	17.2	2.0 km	multiple	1997–2017	01 Feb 2017	40	Disc.: Spacewatch Alt.: 2011 WX71, 2015 PG53	MPC · JPL
1	1997 WE14	MBA-M	17.6	1.3 km	multiple	1997–2020	19 Apr 2020	29	Disc.: Spacewatch	MPC · JPL
1	1997 WS15	MBA-I	18.1	710 m	multiple	1997–2016	18 Nov 2016	64	Disc.: Spacewatch Alt.: 2008 SS18	MPC · JPL
0	1997 WL17	MBA-I	18.3	650 m	multiple	1997–2019	31 Dec 2019	50	Disc.: Spacewatch Added on 22 July 2020	MPC · JPL
0	1997 WO19	MBA-M	17.7	1.2 km	multiple	1997–2019	29 Oct 2019	60	Disc.: Spacewatch Alt.: 2015 XO369	MPC · JPL
1	1997 WQ23	APO	20.8	250 m	multiple	1997–2020	03 Jul 2020	183	Disc.: LINEAR Potentially hazardous object	MPC · JPL
3	1997 WJ29	MBA-M	17.7	860 m	multiple	1997–2019	10 Jan 2019	55	Disc.: Spacewatch	MPC · JPL
0	1997 WT56	MBA-O	17.1	2.1 km	multiple	1997–2020	13 May 2020	59	Disc.: Spacewatch	MPC · JPL
0	1997 WX58	MBA-O	16.3	3.1 km	multiple	1997–2020	20 May 2020	78	Disc.: Spacewatch	MPC · JPL

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X

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

1	1997 XS2	AMO	19.4	470 m	multiple	1997–2011	11 Jan 2011	116	Disc.: LINEAR	MPC · JPL
E	1997 XE10	APO	25.0	36 m	single	8 days	12 Dec 1997	20	Disc.: LINEAR	MPC · JPL
0	1997 XR14	MBA-O	16.7	2.5 km	multiple	1997–2019	24 Oct 2019	49	Disc.: Spacewatch	MPC · JPL

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Y

U	Designation	Class	Physical		Observations				Description and notes	Ref
U	Designation	Class	H	D	Opp.	Arc	Last	Used	Description and notes	Ref

1	1997 YM9	APO	24.0	56 m	multiple	1997–2006	04 May 2006	65	Disc.: NEAT/GEODSS Alt.: 2005 YM128	MPC · JPL
8	1997 YR10	AMO	20.1	340 m	single	6 days	03 Jan 1998	34	Disc.: NEAT/GEODSS	MPC · JPL
0	1997 YN13	MBA-I	17.7	860 m	multiple	1997–2019	05 Aug 2019	41	Disc.: Spacewatch	MPC · JPL
0	1997 YM15	MBA-O	15.7	4.0 km	multiple	1997–2019	05 Nov 2019	100	Disc.: Spacewatch Alt.: 2010 KR56	MPC · JPL

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References

^ "Data Available from the Minor Planet Center – MPCORB.DAT". Minor Planet Center. 22 July 2020. Retrieved 22 July 2020. (doc)
^ "NEOWISE Diameters and Albedos – V2.0". PDS Small Bodies Node. 2019. Retrieved 24 July 2020.
^ Johnston, Wm. Robert (27 December 2019). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 24 July 2020.

[MPCORB-1] "Data Available from the Minor Planet Center – MPCORB.DAT". Minor Planet Center. 22 July 2020. Retrieved 22 July 2020. (doc)

[PDS-NEOWISE-diameters-2] "NEOWISE Diameters and Albedos – V2.0". PDS Small Bodies Node. 2019. Retrieved 24 July 2020.

[johnstonsarchive-TNO-list-3] Johnston, Wm. Robert (27 December 2019). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 24 July 2020.

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