Unusual minor planet

Last updated July 09, 2024

In planetary science, the term unusual minor planet, or unusual object, is used for a minor planet that possesses an unusual physical or orbital characteristic. For the Minor Planet Center (MPC), which operates under the auspices of the International Astronomical Union, any non-classical main-belt asteroid, which account for the vast majority of all minor planets, is an unusual minor planet. These include the near-Earth objects and Trojans as well as the distant minor planets such as centaurs and trans-Neptunian objects.^[1] In a narrower sense, the term is used for a group of bodies – including main-belt asteroids, Mars-crossers, centaurs and otherwise non-classifiable minor planets – that show a high orbital eccentricity, typically above 0.5 and/or a perihelion of less than 6 AU.^[2] Similarly, an unusual asteroid (UA) is an inner Solar System object with a high eccentricity and/or inclination but with a perihelion larger than 1.3 AU, which does exclude the near-Earth objects.^[3]

Other unusual objects

According to the MPC, other unusual minor planets are objects, which orbital characteristics do not fit those of the near-Earth and distant populations.^[2] These objects typically have high eccentricities, and inclinations often more than 90 degrees (retrograde orbits), a criterion that is common among the members of the damocloid population. Object in this list have a T_Jupiter of less than 3 and a perihelion between 1.67 and 5.5 AU, that is, they do not cross the orbit of Mars but cross or at least come close to Jupiter's orbit at 5.2 AU. According to the SSBN07 classification, such objects have cometary dynamics.^[4]^: 44As of August 2021^[update], the list contains 211 objects, most of which remain unnumbered. A bold designation links to an object's stand-alone article.

Designation	Discovery			D est.	Orbital description							Remarks	Refs
Designation	Year	Place	Discoverer	D est.	LoMP class	a (AU)	e	i (°)	q (AU)	Q (AU)	T_Jupiter	Remarks	Refs
(15504) 1999 RG33	1999	( 703 )	CSS	17 km	CEN	9.4	0.77	35	2.12	16.6	1.95	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid; BR-mag: 1.21	MPC JPL
20461 Dioretsa	1999	( 704 )	LINEAR	7.7 km	CEN	23.9	0.90	160	2.40	45.4	-1.54	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid; albedo: 0.030	catalog MPC JPL
37117 Narcissus	2000	( 919 )	W. K. Y. Yeung	9.7 km	CEN	6.9	0.55	14	3.07	10.7	2.62	Obs: 10 opposition(s) Johnston's Archive: unusual; albedo: 0.088	MPC JPL
(65407) 2002 RP120	2002	( 699 )	LONEOS	15 km	TNO	53.9	0.95	119	2.45	105	-0.84	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid; albedo: 0.098; BR-mag: 1.37	catalog MPC JPL
(144908) 2004 YH32	2004	( E12 )	SSS	12 km	CEN	8.2	0.57	79	3.55	12.8	1.03	Obs: 3 opposition(s) Johnston's Archive: damocloid;	catalog MPC JPL
(145627) 2006 RY102	2006	( 644 )	NEAT	27 km	CEN	6.3	0.28	19	4.58	8.1	2.83	Obs: 19 opposition(s) Johnston's Archive: unusual; albedo: 0.051	MPC JPL
(154783) 2004 PA44	2004	(644)	NEAT	8.4 km	CEN	14.2	0.76	3	3.41	25.0	2.51	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
(308607) 2005 WY3	2005	( 291 )	Spacewatch	8.8 km	CEN	6.7	0.73	29	1.79	11.7	2.12	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
(330759) 2008 SO218	2008	( G96 )	MLS	12 km	CEN	8.1	0.56	170	3.54	12.7	-1.39	Listed in damocloid Obs: 8 opposition(s) Johnston's Archive: damocloid; albedo: 0.076; BR-mag: 1.44	MPC JPL
(347449) 2012 TW236	1998	( 704 )	LINEAR	15 km	CEN	7.0	0.57	12	3.00	11.0	2.61	Obs: 9 opposition(s) Johnston's Archive: unusual;	MPC JPL
(433873) 2015 BQ311	2006	( G96 )	MLS	16 km	CEN	7.1	0.29	25	5.03	9.2	2.77	Obs: 13 opposition(s) Johnston's Archive: centaur; BR-mag: 1.25	MPC JPL
(434620) 2005 VD	2005	(G96)	MLS	6.3 km	CEN	6.7	0.25	173	5.00	8.3	-1.39	Listed in damocloid Obs: 6 opposition(s) Johnston's Archive: damocloid; BR-mag: 1.05	catalog MPC JPL
(540205) 2017 RS17	2016	( F51 )	Pan-STARRS 1	5.4 km	CEN	6.2	0.45	43	3.41	8.9	2.27	Obs: 5 opposition(s) Johnston's Archive: unusual;	MPC JPL
1996 PW	1996	( 566 )	NEAT	7.4 km	TNO	253	0.99	30	2.49	504	1.73	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
1998 QJ₁	1998	( 704 )	LINEAR	2.2 km	CEN	11.2	0.81	24	2.09	20.4	2.03	Listed in damocloid Obs: ( 62d) Johnston's Archive: damocloid;	MPC JPL
2000 AB₂₂₉	2000	(704)	LINEAR	7.0 km	TNO	52.9	0.96	68	2.32	103	0.79	Listed in damocloid Obs: ( 64d) Johnston's Archive: damocloid;	MPC JPL
2000 DG8	2000	(704)	LINEAR	11 km	CEN	10.8	0.79	129	2.22	19.3	-0.62	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.053	MPC JPL
2000 HE₄₆	2000	( 699 )	LONEOS	4.9 km	CEN	23.6	0.90	159	2.39	44.9	-1.52	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.045; BR-mag: 1.42	MPC JPL
2000 KP₆₅	2000	(699)	LONEOS	35 km	TNO	90.2	0.96	46	3.31	177	1.63	Listed in damocloid Obs: ( 58d) Johnston's Archive: damocloid;	MPC JPL
(612223) 2001 QF₆	2001	( 704 )	LINEAR	4.0 km	CEN	7.3	0.69	24	2.27	12.3	2.28	Obs: 4 opposition(s) Johnston's Archive: unusual; albedo: 0.040	MPC JPL
2001 YK₆₁	2001	(704)	LINEAR	8.1 km	CEN	10.6	0.69	12	3.29	17.9	2.51	Obs: ( 61d) Johnston's Archive: unusual;	MPC JPL
2002 AR₉₁	2002	( 807 )	DLS	2.9 km	TNO	75.2	0.97	18	2.62	148	1.97	Listed in damocloid Obs: ( 4d)	MPC JPL
2002 RN109	2002	( 704 )	LINEAR	3.9 km	TNO	555	1.00	58	2.69	1107	1.10	Listed in damocloid Obs: ( 80d) Johnston's Archive: damocloid;	MPC JPL
2003 CC₂₂	2003	( 568 )	D. C. Jewitt S. S. Sheppard	13 km	CEN	7.3	0.43	6	4.17	10.4	2.84	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2003 WN₁₈₈	2003	( 703 )	CSS	7.0 km	CEN	14.4	0.85	27	2.21	26.6	1.94	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.050; BR-mag: 1.26	MPC JPL
(661238) 2004 DA62	2004	( 704 )	LINEAR	11 km	CEN	7.7	0.47	52	4.09	11.2	1.99	Obs: 3 opposition(s) Johnston's Archive: damocloid; BR-mag: 1.37	MPC JPL
2004 NN₈	2004	( E12 )	SSS	3.9 km	TNO	98.4	0.98	166	2.36	194	-1.78	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2005 HL₃	2005	(E12)	SSS	5.8 km	CEN	11.3	0.83	36	1.89	20.7	1.79	Listed in damocloid Obs: (157d) Johnston's Archive: damocloid;	MPC JPL
2005 OE	2005	( 703 )	CSS	8.1 km	TNO	62.9	0.95	68	3.03	123	0.90	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2005 SB₂₂₃	2005	( E12 )	SSS	6.4 km	CEN	29.4	0.91	91	2.78	56.1	0.13	Listed in damocloid Obs: (244d) Johnston's Archive: damocloid;	MPC JPL
2005 TJ₅₀	2005	( 691 )	Spacewatch	3.9 km	CEN	9.1	0.58	110	3.81	14.5	-0.17	Listed in damocloid Obs: ( 62d) Johnston's Archive: damocloid;	MPC JPL
2005 VX3	2005	( G96 )	MLS	6.7 km	TNO	953	1.00	112	4.11	1902	-0.91	Listed in damocloid Obs: ( 81d) Johnston's Archive: damocloid;	MPC JPL
2006 BZ8	2006	( 703 )	CSS	6.4 km	CEN	9.6	0.80	165	1.89	17.3	-1.02	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2006 EX₅₂	2006	(703)	CSS	5.3 km	TNO	42.5	0.94	150	2.56	82.5	-1.57	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2006 FV₄	2006	( 704 )	LINEAR	11 km	CEN	10.8	0.70	32	3.23	18.3	2.22	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2006 JG₅₇	2006	( 644 )	NEAT	15 km	CEN	9.6	0.51	57	4.73	14.5	1.82	Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2006 RG₁	2006	( E12 )	SSS	3.4 km	CEN	25.6	0.92	134	2.03	49.2	-0.99	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2006 RJ2	2006	( 703 )	CSS	2.9 km	CEN	9.8	0.76	165	2.31	17.3	-1.17	Listed in damocloid Obs: ( 37d) Johnston's Archive: damocloid;	MPC JPL
2006 SO₁₃₄	2006	( 691 )	Spacewatch	2.3 km	CEN	19.5	0.83	4	3.30	35.7	2.42	Listed in damocloid Obs: ( 36d) Johnston's Archive: damocloid;	MPC JPL
2007 DA₆₁	2007	( G96 )	MLS	4.6 km	TNO	447	0.99	77	2.66	890	0.48	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
(613717) 2007 DP₅₀	2007	( 691 )	Spacewatch	5.3 km	CEN	6.2	0.38	3	3.83	8.6	2.85	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2007 HU₄₅	2007	( G96 )	MLS	3.1 km	CEN	6.8	0.50	6	3.39	10.2	2.73	Obs: ( 28d) Johnston's Archive: unusual;	MPC JPL
2007 SA₂₄	2007	(G96)	MLS	4.2 km	CEN	6.3	0.57	17	2.72	9.9	2.56	Obs: (156d) Johnston's Archive: unusual;	MPC JPL
2008 BN₁₈	2008	( 291 )	Spacewatch	7.7 km	TNO	35.3	0.93	29	2.64	67.9	1.88	Listed in damocloid Obs: ( 14d) Johnston's Archive: damocloid;	MPC JPL
2008 JS₁₄	2008	( E12 )	SSS	10 km	CEN	11.6	0.74	26	2.97	20.1	2.24	Obs: 2 opposition(s) Johnston's Archive: unusual; albedo: 0.044	MPC JPL
2008 SE₈₂	2008	( G96 )	MLS	4.9 km	CEN	19.3	0.84	17	3.18	35.4	2.29	Listed in damocloid Obs: ( 61d) Johnston's Archive: damocloid;	MPC JPL
2008 WA₉₅	2008	( 704 )	LINEAR	1.9 km	CEN	14.1	0.88	60	1.72	26.4	1.16	Listed in damocloid Obs: ( 27d) Johnston's Archive: damocloid;	MPC JPL
2008 WT₁₁	2008	( 703 )	CSS	7.0 km	CEN	9.9	0.62	7	3.78	16.0	2.68	Obs: ( 38d) Johnston's Archive: unusual;	MPC JPL
2009 AU₁₆	2009	( E12 )	SSS	2.7 km	CEN	23.6	0.92	70	1.95	45.3	0.81	Listed in damocloid Obs: (125d) Johnston's Archive: damocloid;	MPC JPL
2009 BL₈₀	2009	( 704 )	LINEAR	2.4 km	CEN	6.1	0.64	9	2.20	10.1	2.49	Obs: (119d) Johnston's Archive: unusual;	MPC JPL
2009 FW₂₃	2009	( E12 )	SSS	3.7 km	CEN	11.5	0.86	87	1.67	21.4	0.54	Listed in damocloid Obs: ( 55d) Johnston's Archive: damocloid;	MPC JPL
2009 QY₆	2009	( 704 )	LINEAR	4.9 km	CEN	12.5	0.83	138	2.07	22.9	-0.85	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.015	MPC JPL
2010 CG₅₅	2010	( 703 )	CSS	6.4 km	TNO	32.0	0.91	146	2.88	61.1	-1.55	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid; albedo: 0.048	MPC JPL
2010 DC₃₉	2010	( G96 )	MLS	1.7 km	TNO	109	0.98	11	1.83	216	1.70	Listed in damocloid Obs: ( 2d)	MPC JPL
2010 EE₂₁	2010	( C51 )	WISE	2.7 km	CEN	8.5	0.62	36	3.20	13.7	2.23	Obs: ( 19d) Johnston's Archive: unusual;	MPC JPL
2010 EX₁₇₅	2010	(C51)	WISE	0 m	TNO	49.4	0.95	29	2.65	96.1	1.85	Listed in damocloid Obs: ( 1d)	MPC JPL
2010 GW₆₄	2010	(C51)	WISE	4.6 km	TNO	63.3	0.94	105	3.72	123	-0.54	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.047	MPC JPL
2010 GW₁₄₇	2010	(C51)	WISE	10 km	TNO	167	0.97	100	5.39	330	-0.45	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: centaur; albedo: 0.037	MPC JPL
2010 JB₁₈₄	2010	(C51)	WISE	0 m	TNO	44.8	0.93	19	3.07	86.6	2.13	Listed in damocloid Obs: ( 1d)	MPC JPL
2010 JC₁₄₇	2010	(C51)	WISE	5.1 km	CEN	14.6	0.76	42	3.47	25.8	1.97	Listed in damocloid Obs: (123d) Johnston's Archive: damocloid; albedo: 0.064	MPC JPL
2010 JH₁₂₄	2010	(C51)	WISE	5.3 km	TNO	69.1	0.96	53	2.60	136	1.26	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.052	MPC JPL
2010 LN₁₃₅	2010	( I41 )	PTF	7.8 km	TNO	2169	1.00	65	1.72	4337	0.78	Listed in damocloid Obs: ( 32d)	MPC JPL
2010 OM₁₀₁	2010	( C51 )	WISE	1.8 km	CEN	26.0	0.92	119	2.13	50.0	-0.66	Listed in damocloid Obs: (101d) Johnston's Archive: damocloid; albedo: 0.036; BR-mag: 1.34	MPC JPL
2010 OR₁	2010	(C51)	WISE	2.5 km	CEN	26.9	0.92	144	2.04	51.8	-1.21	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; albedo: 0.110; BR-mag: 1.32	MPC JPL
2010 PO₅₈	2010	(C51)	WISE	5.6 km	CEN	11.8	0.75	121	2.93	20.6	-0.59	Listed in damocloid Obs: ( 6d) Johnston's Archive: damocloid; albedo: 0.035	MPC JPL
2011 OR₁₇	2011	( E12 )	SSS	11 km	TNO	268	0.99	111	3.11	532	-0.76	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2011 RC₁₇	2011	( H15 )	ISON-NM	3.1 km	CEN	6.3	0.54	11	2.92	9.7	2.65	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2011 SP₂₅	2011	( F51 )	Pan-STARRS 1	2.0 km	CEN	19.5	0.88	109	2.27	36.8	-0.33	Listed in damocloid Obs: ( 58d) Johnston's Archive: damocloid;	MPC JPL
2011 SQ₂₄₉	2011	(F51)	Pan-STARRS 1	5.8 km	CEN	6.6	0.45	17	3.61	9.6	2.71	Obs: 3 opposition(s) Johnston's Archive: unusual; albedo: 0.054	MPC JPL
2011 UR₄₀₂	2011	(F51)	Pan-STARRS 1	20 km	CEN	18.7	0.78	25	4.12	33.2	2.44	Listed in damocloid Obs: 7 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2011 WS₄₁	2011	(F51)	Pan-STARRS 1	1.4 km	TNO	37.8	0.95	142	2.07	73.5	-1.24	Listed in damocloid Obs: ( 20d) Johnston's Archive: damocloid;	MPC JPL
2011 YU₇₅	2011	( 691 )	Spacewatch	1.8 km	CEN	7.5	0.77	17	1.76	13.3	2.17	Obs: (121d) Johnston's Archive: unusual;	MPC JPL
2012 CN₂₉	2012	( G96 )	MLS	4.9 km	CEN	6.4	0.31	20	4.43	8.4	2.79	Obs: ( 67d)	MPC JPL
2012 DD₆₁	2012	( 703 )	CSS	9.7 km	CEN	7.5	0.50	19	3.77	11.2	2.67	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2012 HD₂	2012	( 691 )	Spacewatch	3.9 km	TNO	62.8	0.96	147	2.56	123	-1.57	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2012 KA₅₁	2012	( I41 )	PTF	14 km	TNO	493	0.99	71	4.90	982	0.91	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2012 UN₁₃₈	2012	( F51 )	Pan-STARRS 1	3.5 km	CEN	10.0	0.66	16	3.45	16.6	2.53	Obs: ( 31d) Johnston's Archive: unusual;	MPC JPL
2012 YE₈	2012	( G96 )	MLS	4.2 km	CEN	9.3	0.59	136	3.83	14.8	-0.99	Listed in damocloid Obs: ( 78d) Johnston's Archive: damocloid;	MPC JPL
2012 YO₆	2012	( F51 )	Pan-STARRS 1	5.1 km	CEN	6.3	0.48	107	3.30	9.3	0.26	Listed in damocloid Obs: (142d) Johnston's Archive: damocloid; BR-mag: 1.32	MPC JPL
2013 CM₇₇	2013	( 703 )	CSS	2.8 km	CEN	7.4	0.59	9	2.99	11.8	2.60	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2013 GY₅₄	2013	( F51 )	Pan-STARRS 1	6.1 km	CEN	13.6	0.66	8	4.61	22.6	2.78	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2013 HS₁₅₀	2013	( W84 )	DECam-NEO	1.9 km	TNO	62.8	0.96	97	2.82	123	-0.18	Listed in damocloid Obs: ( 23d) Johnston's Archive: damocloid;	MPC JPL
2013 LD₁₆	2013	( G96 )	MLS	2.7 km	TNO	81.0	0.97	155	2.55	159	-1.73	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid; BR-mag: 1.30	MPC JPL
2013 LG₂₉	2013	( F51 )	Pan-STARRS 1	4.6 km	CEN	17.0	0.79	15	3.55	30.4	2.44	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2013 NS₁₁	2013	(F51)	Pan-STARRS 1	8.4 km	CEN	12.6	0.79	130	2.69	22.6	-0.83	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid; albedo: 0.030; BR-mag: 1.30	MPC JPL
2013 PJ₄₄	2013	(F51)	Pan-STARRS 1	5.6 km	CEN	12.1	0.68	22	3.91	20.3	2.52	Obs: ( 32d) Johnston's Archive: unusual;	MPC JPL
2013 SV₉₉	2013	( W84 )	DECam	2.2 km	CEN	6.9	0.26	17	5.12	8.7	2.88	Obs: ( 16d) Johnston's Archive: centaur;	MPC JPL
2013 WK₆₄	2013	( F51 )	Pan-STARRS 1	3.4 km	CEN	7.9	0.63	63	2.95	12.9	1.54	Obs: (118d) Johnston's Archive: damocloid;	MPC JPL
2013 YF₄₈	2013	( G96 )	MLS	7.0 km	CEN	9.3	0.52	78	4.43	14.1	1.05	Obs: ( 94d) Johnston's Archive: damocloid;	MPC JPL
2013 YG₄₈	2013	( 703 )	CSS	1.6 km	CEN	8.2	0.75	61	2.03	14.3	1.43	Listed in damocloid Obs: (110d) Johnston's Archive: damocloid; BR-mag: 1.32	MPC JPL
2014 EY₂₄₇	2014	( W84 )	DECam	4.4 km	CEN	6.1	0.28	6	4.36	7.8	2.92	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2014 JJ₅₇	2014	( F51 )	Pan-STARRS 1	13 km	CEN	7.0	0.29	96	4.94	9.0	0.52	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2014 KM₁₂₂	2014	(F51)	Pan-STARRS 1	7.0 km	CEN	6.3	0.43	28	3.59	8.9	2.59	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2014 MH₅₅	2014	(F51)	Pan-STARRS 1	8.4 km	TNO	44.8	0.90	92	4.50	85.1	0.01	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2014 ON₅₇	2014	(F51)	Pan-STARRS 1	8.8 km	CEN	15.3	0.69	10	4.78	25.7	2.79	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2014 RE₁₂	2014	(F51)	Pan-STARRS 1	15 km	CEN	14.2	0.64	32	5.08	23.4	2.52	Obs: 8 opposition(s) Johnston's Archive: centaur;	MPC JPL
2014 SQ₃₃₉	2014	(F51)	Pan-STARRS 1	1.5 km	CEN	27.9	0.90	129	2.78	53.1	-1.07	Listed in damocloid Obs: ( 30d) Johnston's Archive: damocloid;	MPC JPL
2014 SQ₃₆₉	2014	(F51)	Pan-STARRS 1	1.5 km	CEN	6.0	0.67	12	2.01	10.1	2.43	Obs: (134d) Johnston's Archive: unusual;	MPC JPL
2014 TK₃₄	2014	(F51)	Pan-STARRS 1	5.8 km	CEN	13.9	0.70	13	4.14	23.6	2.64	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2014 UV₁₁₄	2014	( G96 )	MLS	3.1 km	CEN	13.0	0.69	171	4.02	22.0	-1.86	Listed in damocloid Obs: ( 41d) Johnston's Archive: damocloid;	MPC JPL
2014 XS₃	2014	( F51 )	Pan-STARRS 1	4.6 km	TNO	73.6	0.96	101	3.25	144	-0.37	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 AO₄₄	2015	( 703 )	CSS	8.4 km	CEN	22.0	0.84	140	3.62	40.5	-1.49	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 BH₃₁₁	2015	( G96 )	MLS	3.4 km	CEN	9.2	0.73	94	2.46	15.8	0.44	Listed in damocloid Obs: ( 3d) Johnston's Archive: damocloid;	MPC JPL
2015 BW₅₂₄	2015	( 568 )	Mauna Kea Obs.	6.1 km	CEN	6.9	0.31	9	4.76	9.0	2.92	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2015 BX₅₁₄	2015	( F51 )	Pan-STARRS 1	5.1 km	CEN	12.2	0.62	5	4.59	19.8	2.81	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2015 DB₁₉₈	2015	(F51)	Pan-STARRS 1	9.7 km	CEN	8.3	0.42	22	4.75	11.7	2.75	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2015 FK₃₇	2015	(F51)	Pan-STARRS 1	5.6 km	TNO	441	0.99	156	4.96	877	-2.48	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 JH₁	2015	(F51)	Pan-STARRS 1	9.3 km	CEN	12.3	0.71	35	3.58	21.0	2.19	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2015 KJ₁₅₃	2015	( F52 )	Pan-STARRS 2	3.1 km	CEN	6.4	0.58	18	2.68	10.0	2.54	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2015 RE₂₇₇	2015	( 568 )	OSSOS	2.2 km	CEN	20.3	0.77	2	4.77	35.8	2.80	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 RK₂₄₅	2015	( 703 )	CSS	5.6 km	TNO	80.6	0.97	92	2.76	158	0.01	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 RL₂₇₇	2015	( 568 )	OSSOS	2.3 km	TNO	34.4	0.85	3	5.19	63.7	2.87	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: centaur;	MPC JPL
2015 TN₁₇₈	2015	( F51 )	Pan-STARRS 1	3.9 km	TNO	54.6	0.96	91	2.38	107	0.06	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 TS₃₅₀	2015	(F51)	Pan-STARRS 1	10 km	TNO	141	0.96	58	5.05	276	1.50	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: centaur;	MPC JPL
2015 XQ₃₈₄	2015	(F51)	Pan-STARRS 1	2.9 km	CEN	12.7	0.65	22	4.47	20.9	2.62	Obs: ( 31d) Johnston's Archive: unusual;	MPC JPL
2015 XR₃₈₄	2015	(F51)	Pan-STARRS 1	2.7 km	TNO	36.9	0.90	158	3.57	70.3	-1.97	Listed in damocloid Obs: (124d) Johnston's Archive: damocloid;	MPC JPL
2015 XX₃₅₁	2015	(F51)	Pan-STARRS 1	2.9 km	CEN	14.6	0.85	159	2.13	27.0	-1.27	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2015 YY₁₈	2015	(F51)	Pan-STARRS 1	4.6 km	CEN	19.5	0.83	118	3.29	35.6	-0.75	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 AC₂₈₂	2016	( G96 )	MLS	3.1 km	CEN	6.1	0.43	26	3.52	8.8	2.61	Obs: ( 61d) Johnston's Archive: unusual;	MPC JPL
2016 AT₂₈₁	2016	( F51 )	Pan-STARRS 1	4.2 km	TNO	63.4	0.96	22	2.68	124	1.94	Listed in damocloid Obs: (134d) Johnston's Archive: damocloid;	MPC JPL
2016 BJ₈₁	2016	( G96 )	MLS	8.8 km	CEN	9.7	0.48	13	4.99	14.3	2.86	Obs: 5 opposition(s) Johnston's Archive: unusual;	MPC JPL
2016 CO₂₆₄	2016	( F51 )	Pan-STARRS 1	2.5 km	TNO	48.4	0.94	130	3.02	93.7	-1.25	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 DF₂	2016	(F51)	Pan-STARRS 1	1.8 km	CEN	6.2	0.47	167	3.29	9.2	-1.04	Listed in damocloid Obs: ( 2d) Johnston's Archive: damocloid;	MPC JPL
2016 EJ₂₀₃	2016	( G96 )	MLS	1.1 km	TNO	67.8	0.96	171	2.74	133	-1.92	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 KX₄	2016	( F51 )	Pan-STARRS 1	4.9 km	CEN	7.0	0.68	38	2.28	11.8	2.10	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2016 LS	2016	(F51)	Pan-STARRS 1	9.7 km	CEN	13.3	0.61	114	5.24	21.4	-0.66	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: centaur;	MPC JPL
2016 ND₂₁	2016	( T05 )	ATLAS-HKO	15 km	CEN	8.5	0.56	22	3.76	13.2	2.59	Obs: 7 opposition(s) Johnston's Archive: unusual;	MPC JPL
2016 NL₁₀₀	2016	( F51 )	Pan-STARRS 1	2.4 km	CEN	13.9	0.76	22	3.33	24.4	2.34	Listed in damocloid Obs: ( 65d) Johnston's Archive: damocloid;	MPC JPL
2016 PN₆₆	2016	( 106 )	Črni Vrh Obs.	9.3 km	TNO	31.0	0.91	105	2.90	59.1	-0.37	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 TK₂	2016	( F51 )	Pan-STARRS 1	4.6 km	CEN	9.2	0.55	92	4.12	14.2	0.48	Listed in damocloid Obs: (135d) Johnston's Archive: damocloid;	MPC JPL
2016 TP₉₃	2016	(F51)	Pan-STARRS 1	3.2 km	CEN	7.4	0.56	138	3.29	11.5	-0.78	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 TT₁₀₀	2016	( 691 )	Spacewatch	4.4 km	CEN	8.9	0.59	10	3.67	14.2	2.67	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2016 VY₁₇	2016	( G96 )	MLS	3.2 km	CEN	11.2	0.85	148	1.67	20.7	-0.85	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2016 WS₁	2016	( C51 )	WISE	1.5 km	CEN	14.4	0.88	53	1.70	27.2	1.31	Listed in damocloid Obs: ( 53d) Johnston's Archive: damocloid;	MPC JPL
2017 AO₁₉	2017	( G96 )	MLS	1.3 km	CEN	6.6	0.69	24	2.04	11.3	2.28	Obs: (135d) Johnston's Archive: unusual;	MPC JPL
2017 AX₁₃	2017	( F51 )	Pan-STARRS 1	4.2 km	CEN	28.6	0.88	137	3.35	53.9	-1.43	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2017 BA₉₄	2017	(F51)	Pan-STARRS 1	1.5 km	CEN	6.5	0.65	19	2.29	10.7	2.41	Obs: ( 31d) Johnston's Archive: unusual;	MPC JPL
2017 CW₃₂	2017	( G96 )	MLS	3.4 km	TNO	193	0.99	152	2.96	382	-1.83	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2017 FM₉₉	2017	( F51 )	Pan-STARRS 1	3.4 km	CEN	8.2	0.66	20	2.78	13.7	2.41	Obs: (106d) Johnston's Archive: unusual;	MPC JPL
2017 GC₈	2017	(F51)	Pan-STARRS 1	1.1 km	CEN	10.3	0.74	7	2.64	18.0	2.37	Obs: ( 31d) Johnston's Archive: unusual;	MPC JPL
2017 GD₈	2017	(F51)	Pan-STARRS 1	1.4 km	TNO	43.5	0.95	75	2.28	84.7	0.60	Listed in damocloid Obs: ( 62d) Johnston's Archive: damocloid;	MPC JPL
2017 GZ₈	2017	( G96 )	MLS	5.8 km	CEN	7.6	0.48	6	3.96	11.2	2.80	Obs: 3 opposition(s) Johnston's Archive: unusual;	MPC JPL
2017 JB₆	2017	( F51 )	Pan-STARRS 1	4.0 km	TNO	32.9	0.88	161	3.82	62.0	-2.06	Listed in damocloid Obs: (116d) Johnston's Archive: damocloid;	MPC JPL
2017 MB7	2017	(F51)	Pan-STARRS 1	6.4 km	TNO	3549	1.00	56	4.45	7094	1.32	Listed in damocloid Obs: (174d) Johnston's Archive: damocloid;	MPC JPL
2017 MZ₄	2017	(F51)	Pan-STARRS 1	9.7 km	TNO	66.4	0.95	66	3.18	130	0.97	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2017 OX₆₈	2017	(F51)	Pan-STARRS 1	1.2 km	TNO	59.0	0.97	95	1.74	116	-0.04	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
(606187) 2017 QO₃₃	2017	(F51)	Pan-STARRS 1	8.1 km	TNO	34.4	0.86	149	4.94	63.9	-2.12	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2017 RR₂	2017	(F51)	Pan-STARRS 1	1.5 km	CEN	11.6	0.78	87	2.53	20.7	0.54	Listed in damocloid Obs: ( 96d) Johnston's Archive: damocloid;	MPC JPL
2017 SN₃₃	2017	(F51)	Pan-STARRS 1	1.2 km	TNO	249	0.99	152	1.84	497	-1.42	Listed in damocloid Obs: ( 67d) Johnston's Archive: damocloid;	MPC JPL
2017 SV13	2017	(F51)	Pan-STARRS 1	1.0 km	CEN	9.6	0.79	113	2.01	17.3	-0.12	Listed in damocloid Obs: ( 42d) Johnston's Archive: damocloid;	MPC JPL
2017 SW₁₁	2017	(F51)	Pan-STARRS 1	12 km	CEN	9.8	0.52	16	4.70	14.8	2.78	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2017 UW₅₁	2017	( G96 )	MLS	3.9 km	TNO	130	0.98	144	3.14	257	-1.73	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2017 YL₂	2017	( C51 )	WISE	2.4 km	CEN	9.0	0.77	28	2.09	15.9	2.07	Listed in damocloid Obs: (114d) Johnston's Archive: damocloid;	MPC JPL
2017 YL₄	2017	( F51 )	Pan-STARRS 1	5.1 km	TNO	153	0.97	89	4.26	303	0.08	Listed in damocloid Obs: ( 63d)	MPC JPL
2018 DE₄	2018	( G96 )	MLS	1.6 km	TNO	32.5	0.93	81	2.39	62.6	0.44	Listed in damocloid Obs: (125d) Johnston's Archive: damocloid;	MPC JPL
2018 EG₄	2018	( F51 )	Pan-STARRS 1	3.5 km	CEN	13.2	0.67	18	4.39	22.0	2.66	Obs: ( 9d) Johnston's Archive: unusual;	MPC JPL
2018 KH₃	2018	( G96 )	MLS	8.1 km	TNO	93.8	0.96	47	3.71	184	1.68	Listed in damocloid Obs: (211d) Johnston's Archive: damocloid;	MPC JPL
2018 MO₈	2018	( F51 )	Pan-STARRS 1	8.8 km	CEN	15.1	0.67	52	4.99	25.2	1.92	Obs: 4 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2018 MP₈	2018	(F51)	Pan-STARRS 1	3.9 km	TNO	357	0.99	68	3.83	711	0.92	Listed in damocloid Obs: (184d) Johnston's Archive: damocloid;	MPC JPL
2018 PL₂₈	2018	(F51)	Pan-STARRS 1	4.9 km	CEN	19.5	0.86	74	2.69	36.4	0.80	Listed in damocloid Obs: 3 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2018 SQ₁₃	2018	( G96 )	MLS	3.4 km	TNO	154	0.98	91	2.97	305	0.00	Listed in damocloid Obs: (135d) Johnston's Archive: damocloid;	MPC JPL
2018 TL₆	2018	(G96)	MLS	460 m	CEN	8.3	0.79	171	1.72	14.8	-0.89	Listed in damocloid Obs: ( 10d) Johnston's Archive: damocloid;	MPC JPL
2018 UB₁	2018	( F52 )	Pan-STARRS 2	6.4 km	CEN	7.7	0.52	19	3.71	11.6	2.64	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2018 WB₁	2018	( G96 )	MLS	1.5 km	CEN	7.3	0.69	152	2.22	12.3	-0.79	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2019 AH₅₄	2019	( F51 )	Pan-STARRS 1	4.9 km	CEN	10.1	0.67	11	3.35	16.9	2.54	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2019 GG₂₃	2019	( W93 )	KMT-CTIO	1.4 km	CEN	6.1	0.29	1	4.39	7.9	2.93	Obs: ( 7d)	MPC JPL
2019 HC₄	2019	( G96 )	MLS	4.4 km	CEN	8.8	0.55	134	3.91	13.6	-0.92	Listed in damocloid Obs: 5 opposition(s) Johnston's Archive: damocloid;	MPC JPL
C/2019 JU6 (ATLAS) (2019 JU₆)	2019	( T05 )	ATLAS-HKO	4.9 km	comet	193	0.99	148	2.04	383	-1.50	Listed in damocloid Obs: ( 2d)	MPC JPL
2019 KE₇	2019	( G96 )	MLS	4.6 km	CEN	11.7	0.70	108	3.48	19.9	-0.22	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2019 KF₇	2019	( I41 )	ZTF	4.4 km	CEN	6.1	0.53	5	2.90	9.4	2.68	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2019 KV₄₂	2019	( F51 )	Pan-STARRS 1	6.4 km	CEN	11.3	0.57	20	4.82	17.8	2.72	Obs: ( 29d)	MPC JPL
2019 NN₁₀	2019	(F51)	Pan-STARRS 1	4.4 km	CEN	6.1	0.42	6	3.55	8.7	2.81	Obs: ( 54d) Johnston's Archive: unusual;	MPC JPL
2019 PN₂	2019	(F51)	Pan-STARRS 1	2.3 km	CEN	25.2	0.92	113	2.01	48.3	-0.47	Listed in damocloid Obs: (165d) Johnston's Archive: damocloid;	MPC JPL
2019 RJ₂	2019	( G96 )	MLS	8.4 km	CEN	9.8	0.48	23	5.07	14.5	2.74	Obs: 3 opposition(s) Johnston's Archive: centaur;	MPC JPL
2019 RZ₁₆	2019	( F51 )	Pan-STARRS 1	2.3 km	CEN	6.7	0.65	5	2.33	11.0	2.49	Obs: (106d) Johnston's Archive: unusual;	MPC JPL
2019 UL₁₄	2019	(F51)	Pan-STARRS 1	2.9 km	CEN	10.0	0.51	19	4.89	15.2	2.77	Obs: ( 35d) Johnston's Archive: unusual;	MPC JPL
2019 UT₇₅	2019	(F51)	Pan-STARRS 1	670 m	CEN	7.6	0.78	5	1.67	13.5	2.19	Obs: ( 5d)	MPC JPL
2019 YJ₆	2019	(F51)	Pan-STARRS 1	1.8 km	TNO	37.7	0.93	22	2.56	72.8	1.95	Listed in damocloid Obs: (189d) Johnston's Archive: damocloid;	MPC JPL
2020 BF₁₃	2020	(F51)	Pan-STARRS 1	9.4 km	CEN	7.8	0.46	36	4.25	11.3	2.43	Obs: 2 opposition(s) Johnston's Archive: unusual;	MPC JPL
2020 BV₆₄	2020	( G96 )	MLS	3.2 km	CEN	12.0	0.69	10	3.79	20.3	2.61	Obs: ( 27d)	MPC JPL
2020 DN₂	2020	( I41 )	ZTF	4.2 km	CEN	6.1	0.46	19	3.31	8.9	2.68	Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2020 EP	2020	( G96 )	MLS	2.8 km	CEN	10.5	0.76	76	2.48	18.5	0.93	Listed in damocloid Obs: ( 74d) Johnston's Archive: damocloid;	MPC JPL
2020 FH₂₄	2020	(G96)	MLS	3.5 km	CEN	14.3	0.77	29	3.27	25.3	2.22	Listed in damocloid Obs: ( 57d)	MPC JPL
2020 HB₁₁	2020	(G96)	MLS	4.5 km	CEN	16.5	0.71	147	4.84	28.2	-1.81	Listed in damocloid Obs: ( 37d) Johnston's Archive: damocloid;	MPC JPL
2020 HK₉₃	2020	( F52 )	Pan-STARRS 2	2.1 km	CEN	7.2	0.57	17	3.14	11.3	2.58	Obs: ( 29d)	MPC JPL
2020 KD₆	2020	( F51 )	Pan-STARRS 1	500 m	CEN	13.1	0.87	39	1.68	24.5	1.61	Listed in damocloid Obs: ( 39d) Johnston's Archive: damocloid;	MPC JPL
2020 KH₇	2020	(F51)	Pan-STARRS 1	4.2 km	CEN	7.9	0.50	106	3.95	11.9	0.06	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2020 KU₇	2020	(F51)	Pan-STARRS 1	4.0 km	TNO	34.8	0.88	104	4.20	65.4	-0.44	Listed in damocloid Obs: 2 opposition(s) Johnston's Archive: damocloid;	MPC JPL
2020 ML₁	2020	(F51)	Pan-STARRS 1	1.3 km	TNO	55.1	0.95	83	2.54	108	0.35	Listed in damocloid Obs: ( 31d) Johnston's Archive: damocloid;	MPC JPL
2020 OP₇	2020	(F51)	Pan-STARRS 1	1.8 km	CEN	28.7	0.90	80	3.00	54.4	0.56	Listed in damocloid Obs: ( 53d)	MPC JPL
2020 OP₈	2020	(F51)	Pan-STARRS 1	6.1 km	CEN	14.1	0.72	30	3.94	24.3	2.34	Obs: (142d)	MPC JPL
2020 OR₅	2020	(F51)	Pan-STARRS 1	3.2 km	CEN	6.2	0.38	167	3.89	8.6	-1.14	Listed in damocloid Obs: 4 opposition(s) Johnston's Archive: unusual;	MPC JPL
2020 OS₅	2020	(F51)	Pan-STARRS 1	1.5 km	CEN	6.8	0.68	156	2.18	11.4	-0.76	Listed in damocloid Obs: ( 8d) Johnston's Archive: unusual;	MPC JPL
2020 OS₈₆	2020	(F51)	Pan-STARRS 1	4.0 km	CEN	8.3	0.61	7	3.23	13.3	2.61	Obs: ( 29d)	MPC JPL
2020 QN₆	2020	(F51)	Pan-STARRS 1	5.0 km	TNO	673	0.99	77	4.82	1341	0.62	Listed in damocloid Obs: (501d)	MPC JPL
2020 QP₄₂	2020	(F51)	Pan-STARRS 1	4.0 km	CEN	7.9	0.50	20	3.96	11.9	2.66	Obs: ( 60d)	MPC JPL
2020 SJ₅	2020	(F51)	Pan-STARRS 1	1.9 km	CEN	18.2	0.86	77	2.62	33.7	0.71	Listed in damocloid Obs: ( 52d)	MPC JPL
2020 SL₁₉	2020	( F52 )	Pan-STARRS 2	3.2 km	CEN	7.5	0.62	22	2.82	12.2	2.44	Obs: (165d)	MPC JPL
2020 SV₇₉	2020	( G96 )	MLS	810 m	CEN	17.7	0.89	6	2.03	33.3	2.00	Listed in damocloid Obs: ( 26d)	MPC JPL
2020 SW₇	2020	( F52 )	Pan-STARRS 2	7.0 km	CEN	8.9	0.48	15	4.69	13.2	2.81	Obs: 2 opposition(s)	MPC JPL
2020 TK₉	2020	( G96 )	MLS	1.5 km	CEN	20.9	0.88	106	2.49	39.3	-0.26	Listed in damocloid Obs: ( 30d)	MPC JPL
2020 TQ₁₄	2020	(G96)	MLS	1.3 km	CEN	6.0	0.62	27	2.27	9.7	2.37	Obs: ( 67d)	MPC JPL
2020 TU₈	2020	( F52 )	Pan-STARRS 2	1.5 km	CEN	6.5	0.65	47	2.31	10.7	1.97	Obs: ( 6d)	MPC JPL
2020 VS₆	2020	( G96 )	MLS	610 m	CEN	9.6	0.82	161	1.76	17.5	-0.95	Listed in damocloid Obs: ( 5d)	MPC JPL
2021 AD₃	2021	( F51 )	Pan-STARRS 1	4.2 km	CEN	8.4	0.54	29	3.92	13.0	2.50	Obs: ( 3d)	MPC JPL
2021 AE₃	2021	(F51)	Pan-STARRS 1	4.6 km	CEN	8.3	0.43	32	4.77	11.9	2.57	Obs: ( 3d)	MPC JPL
2021 CE₂₂	2021	( F52 )	Pan-STARRS 2	770 m	CEN	7.3	0.77	7	1.69	12.8	2.22	Obs: ( 57d)	MPC JPL
2021 CT₃	2021	( F51 )	Pan-STARRS 1	3.4 km	CEN	7.4	0.42	160	4.29	10.6	-1.34	Listed in damocloid Obs: ( 26d)	MPC JPL
2021 DL₁	2021	( G96 )	MLS	6.4 km	TNO	35.3	0.89	149	3.93	66.7	-1.89	Listed in damocloid Obs: 3 opposition(s)	MPC JPL
2021 DN₂	2021	( F51 )	Pan-STARRS 1	4.2 km	CEN	22.2	0.82	11	3.99	40.3	2.56	Listed in damocloid Obs: (135d)	MPC JPL
2021 GQ₅₇	2021	(F51)	Pan-STARRS 1	2.5 km	TNO	86.3	0.96	125	3.46	169	-1.25	Listed in damocloid Obs: (112d)	MPC JPL

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Characteristics

Extinct comet, are considered unusual minor planets in having the orbital characteristics of a long period, Jupiter-family or Halley-type comet but showing no sign of cometary activity.
Damocloid, with typically highly inclined orbits, often being retrograde.

Examples

1996 PW (TNO, LPC)
1998 WU24 (CEN, HTC)^[5]
(33342) 1998 WT24 (NEO)
2011 YU75 (CEN)

Related Research Articles

Damocloids are a class of minor planets such as 5335 Damocles and 1996 PW that have Halley-type or long-period highly eccentric orbits typical of periodic comets such as Halley's Comet, but without showing a cometary coma or tail. David Jewitt defines a damocloid as an object with a Jupiter Tisserand invariant (T_J) of 2 or less, while Akimasa Nakamura defines this group with the following orbital elements:

(65407) 2002 RP₁₂₀ (provisional designation 2002 RP₁₂₀) is a trans-Neptunian object and damocloid from the outer Solar System. Its orbit is retrograde and comet-like, and has a high eccentricity. It was discovered on 4 September 2002 by astronomers with the LONEOS survey at Anderson Mesa Station, Arizona, in the United States. The unusual object measures approximately 14.6 kilometers (9.1 miles) in diameter and is likely elongated in shape. It is a slow rotator and potentially a tumbler as well. The object was probably ejected from the ecliptic by Neptune.

20461 Dioretsa is a centaur and damocloid on a retrograde, cometary-like orbit from the outer Solar System. It was discovered on 8 June 1999, by members of the LINEAR team at the Lincoln Laboratory Experimental Test Site near Socorro, New Mexico, United States. The highly eccentric unusual object measures approximately 14 kilometers in diameter. It was named Dioretsa, the word "asteroid" spelled backwards.

<span class="nowrap">(528219) 2008 KV<sub>42</sub></span>

(528219) 2008 KV₄₂ (provisional designation:2008 KV₄₂; nicknamed Drac) is a trans-Neptunian object and the first one with a retrograde orbit to be discovered. This retrograde motion with an orbital inclination of 103° suggests that it is the missing link between its source in the Hills cloud and Halley-type comets, thus providing further insight into the evolution of the outer Solar System. The object measures approximately 77 kilometers (48 miles) in diameter. With a semi-major axis of 42 AU, it takes about 269 years to complete an orbit around the Sun.

(434620) 2005 VD, provisional designation 2005 VD, is a centaur and damocloid on a retrograde orbit from the outer Solar System, known for having the second most highly inclined orbit of any small Solar System body, behind 2013 LA2. It was the most highly inclined known object between 2005 and 2013. The unusual object measures approximately 6 kilometers in diameter.

(612093) 1999 LE₃₁, prov. designation: 1999 LE₃₁, is a centaur and damocloid on a retrograde and eccentric orbit from the outer region of the Solar System. It was first observed on 12 June 1999, by astronomers with the LINEAR program at the Lincoln Lab's ETS near Socorro, New Mexico, in the United States. The unusual object measures approximately 17 kilometers (11 miles) in diameter.

2005 VX₃ is trans-Neptunian object and retrograde damocloid on a highly eccentric, cometary-like orbit. It was first observed on 1 November 2005, by astronomers with the Mount Lemmon Survey at the Mount Lemmon Observatory in Arizona, United States. The unusual object measures approximately 7 kilometers (4 miles) in diameter. It has the 3rd largest known heliocentric semi-major axis and aphelion. Additionally its perihelion lies within the orbit of Jupiter, which means it also has the largest orbital eccentricity of any known minor planet.

2000 DG₈ is a dark centaur and damocloid on a retrograde and highly eccentric orbit from the outer region of the Solar System. It was first observed on 25 February 2000, by astronomers with the LINEAR program at the Lincoln Lab's ETS near Socorro, New Mexico, United States. It has not been observed since 2001. The unusual object measures approximately 16 kilometers (9.9 miles) in diameter.

1996 PW is an exceptionally eccentric trans-Neptunian object and a damocloid on an orbit typical of long-period comets but one that showed no sign of cometary activity around the time it was discovered. The unusual object measures approximately 10 kilometers in diameter and has a rotation period of 35.4 hours and likely an elongated shape.

2013 LA₂ is a centaur and damocloid on a cometary-like and retrograde orbit from the outer Solar System, suggesting that it is an extinct comet. It was first observed on 1 June 2013 by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, in the United States. The object measures approximately 1.8 kilometers (1.1 miles) in diameter. It holds the record for having the highest orbital inclination of any known minor planet.

(336756) 2010 NV₁ (provisional designation 2010 NV₁) is a highly eccentric planet crossing trans-Neptunian object, also classified as centaur and damocloid, approximately 52 kilometers (32 miles) in diameter. It is on a retrograde cometary orbit. It has a barycentric semi-major axis (average distance from the Sun) of approximately 286 AU.

<span class="nowrap">(127546) 2002 XU<sub>93</sub></span>

(127546) 2002 XU₉₃, provisional designation 2002 XU₉₃, is a trans-Neptunian object and centaur on highly inclined and eccentric orbit in the outer region of the Solar System. It measures approximately 170 kilometers (110 mi) in diameter and is one of few objects with such an unusual orbit. It was discovered on 4 December 2002, by American astronomer Marc Buie at the Kitt Peak National Observatory in Arizona, United States.

2007 BP₁₀₂ is a high inclination centaur and damocloid from the outer regions of the Solar System, approximately 34 kilometers in diameter. It was first observed by astronomers at the Mauna Kea Observatories on 24 January 2007.

2017 MB₇ is a trans-Neptunian object and damocloid on a cometary-like orbit from the outer Solar System, approximately 6 kilometers (4 miles) in diameter. It was first observed on 22 June 2017 by the Pan-STARRS survey at Haleakala Observatory in Hawaii, United States. This unusual object has the largest heliocentric aphelion, semi-major axis, orbital eccentricity and orbital period of any known periodic minor planet, even larger than that of 2014 FE72; it is calculated to reach several thousand AU (Earth-Sun) distances at the farthest extent of its orbit.

(342842) 2008 YB₃, provisional designation: 2008 YB₃, is a sizable centaur and retrograde damocloid from the outer Solar System, approximately 67 kilometers (42 miles) in diameter. It was discovered on 18 December 2008, by astronomers with the Siding Spring Survey at the Siding Spring Observatory in Australia. The minor planet was numbered in 2012 and has since not been named.

(468861) 2013 LU₂₈, provisional designation 2013 LU₂₈ is a highly eccentric trans-Neptunian object, retrograde centaur and damocloid from the outer regions of the Solar System. It was discovered on 8 June 2013 by astronomers with the Mount Lemmon Survey at the Mount Lemmon Observatory in Arizona, United States. The object is unlikely a dwarf planet as it measures approximately 110 kilometers (68 miles) in diameter. It was numbered in 2016 and has not been named since.

(523635) 2010 DN₉₃ (provisional designation 2010 DN₉₃) is a trans-Neptunian object from in the scattered disc located in the outermost region of the Solar System. It was discovered on 26 February 2010, by astronomers with the Pan-STARRS survey at Haleakala Observatory on the island of Maui, Hawaii, in the United States. Assuming a low albedo, the object is estimated at approximately 490 kilometers (300 miles) in diameter. It was numbered in 2018 and remains unnamed.

2011 MM₄, provisional designation: 2011 MM₄, is a sizable centaur and retrograde damocloid from the outer Solar System, approximately 64 kilometers (40 miles) in diameter. It was discovered on 24 June 2011, by astronomers with the Pan-STARRS 1 at the Haleakala Obs. in Hawaii.

(523676) 2013 UL₁₀ (prov. designation:2013 UL₁₀) is a reddish centaur with cometary activity orbiting the Sun between Jupiter and Uranus. It was discovered on 18 August 2010, by a team of astronomers with the Pan-STARRS survey at the Haleakalā Observatory, Hawaii. It is the first centaur known to have both comet-like activity and red surface colors. It is also one of the smallest centaurs, with a nucleus of no more than 10 kilometers (6.2 miles) in diameter. As of 2021, it has not been named.

References

↑ "Unusual Minor Planets". Minor Planet Center. Retrieved 14 November 2018.
1 2 "List Of Other Unusual Objects". Minor Planet Center. Retrieved 19 August 2021.
↑ Fernández, Yanga R.; Jewitt, David C.; Sheppard, Scott S. (July 2005). "Albedos of Asteroids in Comet-Like Orbits". The Astronomical Journal. 130 (1): 308–318. Bibcode:2005AJ....130..308F. CiteSeerX 10.1.1.507.2206 . doi:10.1086/430802.
↑ Gladman, B.; Marsden, B. G.; Vanlaerhoven, C. (2008). "Nomenclature in the Outer Solar System" (PDF). The Solar System Beyond Neptune: 43. Bibcode:2008ssbn.book...43G.}
↑ Davies, John K.; Tholen, David J.; Whiteley, Robert J.; Green, Simon F.; Hillier, Jon K.; Foster, Michael J.; et al. (March 2001). "The Lightcurve and Colors of Unusual Minor Planet 1998 WU 24". Icarus. 150 (1): 69–77. Bibcode:2001Icar..150...69D. doi:10.1006/icar.2000.6554.

External links

MPC data page
New Object Moves Like A Comet But Looks Like An Asteroid, 1996 PW, JPL, August 1996
The lightcurve and colors of unusual minor planet 1996 PW
Unusual Minor Planet 2011 YU75 (remanzacco)
Unusual Minor Planet 2012 NJ (remanzacco)

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[MPC-Unusual-1] "Unusual Minor Planets". Minor Planet Center. Retrieved 14 November 2018.

[MPC-Other-Unusual-2] 1 2 "List Of Other Unusual Objects". Minor Planet Center. Retrieved 19 August 2021.

[Fernandez-2005-3] Fernández, Yanga R.; Jewitt, David C.; Sheppard, Scott S. (July 2005). "Albedos of Asteroids in Comet-Like Orbits". The Astronomical Journal. 130 (1): 308–318. Bibcode:2005AJ....130..308F. CiteSeerX 10.1.1.507.2206 . doi:10.1086/430802.

[Gladman-2008-4] Gladman, B.; Marsden, B. G.; Vanlaerhoven, C. (2008). "Nomenclature in the Outer Solar System" (PDF). The Solar System Beyond Neptune: 43. Bibcode:2008ssbn.book...43G.}

[Davies-2001-5] Davies, John K.; Tholen, David J.; Whiteley, Robert J.; Green, Simon F.; Hillier, Jon K.; Foster, Michael J.; et al. (March 2001). "The Lightcurve and Colors of Unusual Minor Planet 1998 WU 24". Icarus. 150 (1): 69–77. Bibcode:2001Icar..150...69D. doi:10.1006/icar.2000.6554.

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