List of unnumbered trans-Neptunian objects: 2011

The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2011. As of November 2025^[update], it contains a total of 91 bodies.^[1]^[2]^[3]^[4]^[5] For more information see the description on the main page. Also see list for the previous and next year.

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[2]

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[5]

Designation	First Observed (discovered)		D (km)	Orbital description						Remarks	Refs
Designation	Date	Observer (Site)	D (km)	Class	a (AU)	e	i (°)	q (AU)	Q (AU)	Remarks	Refs
2011 BN₁₇₀	30 January 2011	Pan-STARRS 1 (F51)	172	SDO	71.7	0.51	12	34.9	108.4	—	MPC · JPL
2011 BS₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	178	cubewano (cold)	43.9	0.05	5	41.6	46.1	—	MPC · JPL
2011 BT₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	236	res · 5:12	54.2	0.34	33	35.8	72.6	—	MPC · JPL
2011 BU₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	141	res · 3:8?	57.9	0.38	21	35.7	80.1	—	MPC · JPL
2011 CW₁₁₉	2 February 2011	Pan-STARRS 1 (F51)	112	res · 3:7	53.2	0.37	20	33.4	72.9	—	MPC · JPL
2011 CX₁₁₉	4 February 2011	Pan-STARRS 1 (F51)	233	cubewano (hot)?	41.8	0.14	27	35.9	47.8	—	MPC · JPL
2011 CY₁₁₉	4 February 2011	Pan-STARRS 1 (F51)	135	res · 1:3?	62.9	0.37	22	39.6	86.1	—	MPC · JPL
2011 EZ₉₀	14 March 2011	Pan-STARRS 1 (F51)	238	cubewano (hot)?	41.2	0.07	27	38.2	44.1	—	MPC · JPL
2011 GM₈₉	4 April 2011	Las Campanas Obs. (304)	143	SDO	52.6	0.31	17	36.5	68.7	—	MPC · JPL
2011 HD₁₀₃	28 April 2011	New Horizons KBO Search (268)	77	other TNO	43.9	0.26	6	32.5	55.4	—	MPC · JPL
2011 HE₁₀₃	28 April 2011	New Horizons KBO Search (268)	91	cubewano (hot)?	43.6	0.11	7	38.9	48.3	—	MPC · JPL
2011 HF₁₀₃	29 April 2011	New Horizons KBO Search (268)	118	cubewano (cold)	42.8	0.05	3	40.7	45	—	MPC · JPL
2011 HJ₁₀₃	28 April 2011	New Horizons KBO Search (268)	116	cubewano (hot)	46.4	0.15	5	39.3	53.4	—	MPC · JPL
2011 HK₁₀₃	28 April 2011	New Horizons KBO Search (268)	110	other TNO	53	0.31	6	36.6	69.4	—	MPC · JPL
2011 HL₁₀₃	28 April 2011	Magellan-Clay Telescope (268)	98	res · 3:5	42.3	0.17	15	35.2	49.5	—	MPC · JPL
2011 HN₁₀₄	30 April 2011	Pan-STARRS 1 (F51)	121	plutino	39.2	0.29	18	27.8	50.6	—	MPC · JPL
2011 HO₆₀	26 April 2011	La Silla Obs. (809)	215	res · 2:11	92.9	0.61	22	36.6	149.1	—	MPC · JPL
2011 HP₈₃	29 April 2011	La Silla Obs. (809)	395	SDO	52.1	0.31	29	36.1	68	—	MPC · JPL
2011 HZ₁₀₂	28 April 2011	New Horizons KBO Search (268)	66	cubewano (cold)	43	0.01	2	42.7	43.4	—	MPC · JPL
2011 JA₃₂	2 May 2011	New Horizons KBO Search (268)	54	cubewano (cold)	46.4	0.13	3	40.3	52.5	—	MPC · JPL
2011 JD₃₂	1 May 2011	Magellan-Clay Telescope (268)	69	SDO	50.9	0.34	13	33.7	68.1	—	MPC · JPL
2011 JW₃₁	4 May 2011	New Horizons KBO Search (268)	86	cubewano (cold)	45.4	0.09	2	41.2	49.7	—	MPC · JPL
2011 JY₃₁	4 May 2011	New Horizons KBO Search (268)	79	cubewano (cold)	43.8	0.06	3	41.4	46.3	—	MPC · JPL
2011 KW₄₈	29 May 2011	New Horizons KBO Search-Subaru (266)	64	other TNO	37.5	0.14	4	32.4	42.7	—	MPC · JPL
2011 LJ₂₉	6 June 2011	Pan-STARRS 1 (F51)	262	cubewano (cold)	43.9	0.08	0	40.4	47.5	—	MPC · JPL
2011 OB₆₀	27 July 2011	Pan-STARRS 1 (F51)	157	SDO	101.8	0.64	20	36.7	167	—	MPC · JPL
2011 OM₇₈	—	—	—	—	103.3	0.64	19	36.7	170	—	MPC · JPL
2011 OR₁₇	29 July 2011	Siding Spring Survey (E12)	15	damocloid	272.3	0.99	110	3.1	541.6	—	MPC · JPL
2011 SW₂₈₁	26 September 2011	Pan-STARRS 1 (F51)	176	cubewano (cold)	46.9	0.1	5	42.2	51.6	—	MPC · JPL
2011 UA₄₁₁	26 October 2011	M. Alexandersen (568)	67	plutino	39.6	0.25	9	29.7	49.5	—	MPC · JPL
2011 UA₄₁₂	24 October 2011	M. Alexandersen (568)	62	cubewano (cold)	46.6	0.15	3	39.4	53.7	—	MPC · JPL
2011 UA₄₁₃	26 October 2011	M. Alexandersen (568)	69	res · 3:4	36.8	0.14	5	31.8	41.8	—	MPC · JPL
2011 UB₄₁₁	26 October 2011	M. Alexandersen (568)	123	plutino?	39.8	0.04	15	38.1	41.6	—	MPC · JPL
2011 UB₄₁₂	24 October 2011	M. Alexandersen (568)	124	cubewano (hot)?	43.7	0.06	15	41.4	46.1	—	MPC · JPL
2011 UC₄₁₂	24 October 2011	M. Alexandersen (568)	93	cubewano (cold)	43.7	0.07	3	40.4	46.9	—	MPC · JPL
2011 UD₄₁₁	26 October 2011	M. Alexandersen (568)	187	plutino	39.5	0.29	16	28	50.9	—	MPC · JPL
2011 UD₄₁₂	24 October 2011	M. Alexandersen (568)	197	cubewano (hot)	45.7	0.06	6	43.1	48.3	—	MPC · JPL
2011 UE₄₁₁	24 October 2011	M. Alexandersen (568)	52	twotino	48.1	0.33	9	32.4	63.8	—	MPC · JPL
2011 UE₄₁₂	24 October 2011	M. Alexandersen (568)	216	cubewano (hot)?	43.7	0.11	23	39	48.4	—	MPC · JPL
2011 UF₄₁₁	26 October 2011	M. Alexandersen (568)	77	twotino	48.3	0.35	6	31.3	65.3	—	MPC · JPL
2011 UF₄₁₂	24 October 2011	M. Alexandersen (568)	78	cubewano (cold)	45.3	0.01	2	45.1	45.6	—	MPC · JPL
2011 UG₄₁₁	26 October 2011	M. Alexandersen (568)	71	twotino	48	0.14	11	41.1	54.9	—	MPC · JPL
2011 UG₄₁₂	26 October 2011	M. Alexandersen (568)	95	cubewano (cold)	46.8	0.16	3	39.4	54.1	—	MPC · JPL
2011 UH₄₁₁	24 October 2011	M. Alexandersen (568)	70	other TNO	46.5	0.25	27	35.1	57.9	—	MPC · JPL
2011 UH₄₁₂	26 October 2011	M. Alexandersen (568)	108	cubewano (hot)?	42.9	0.12	15	37.7	48.1	—	MPC · JPL
2011 UJ₄₁₁	24 October 2011	M. Alexandersen (568)	78	res · 3:5	42.6	0.13	5	37.3	47.9	—	MPC · JPL
2011 UJ₄₁₂	26 October 2011	M. Alexandersen (568)	113	cubewano (hot)?	42.3	0.03	30	41.1	43.4	—	MPC · JPL
2011 UK₄₁₂	26 October 2011	M. Alexandersen (568)	124	cubewano (hot)?	41	0.1	26	37.1	44.9	—	MPC · JPL
2011 UK₄₁₃	25 October 2011	Pan-STARRS 1 (F51)	231	cubewano (hot)?	41.8	0.09	14	38.1	45.5	—	MPC · JPL
2011 UL₄₁₁	24 October 2011	M. Alexandersen (568)	68	res · 3:5	42.5	0.08	2	39.2	45.8	—	MPC · JPL
2011 UL₄₁₂	26 October 2011	M. Alexandersen (568)	136	cubewano (hot)	43.3	0.08	10	39.8	46.7	—	MPC · JPL
2011 UM₄₁₁	24 October 2011	M. Alexandersen (568)	124	res · 3:5	42.4	0.14	9	36.4	48.5	—	MPC · JPL
2011 UM₄₁₂	26 October 2011	M. Alexandersen (568)	94	cubewano (hot)	45.7	0.14	11	39.5	51.8	—	MPC · JPL
2011 UN₄₁₁	26 October 2011	M. Alexandersen (568)	54	res · 3:5	42.7	0.22	3	33.5	51.9	—	MPC · JPL
2011 UN₄₁₂	24 October 2011	M. Alexandersen (568)	97	plutino?	39.2	0.06	20	37	41.3	—	MPC · JPL
2011 UO₄₁₁	26 October 2011	M. Alexandersen (568)	68	res · 3:5	42.6	0.21	5	33.6	51.7	—	MPC · JPL
2011 UO₄₁₂	26 October 2011	M. Alexandersen (568)	97	other TNO	38.2	0.12	28	33.5	43	—	MPC · JPL
2011 UP₄₁₀	24 October 2011	M. Alexandersen (568)	102	plutino	39.9	0.18	3	32.7	47.2	—	MPC · JPL
2011 UP₄₁₁	26 October 2011	M. Alexandersen (568)	78	res · 1:4	76.8	0.5	13	38.6	115	—	MPC · JPL
2011 UP₄₁₂	24 October 2011	M. Alexandersen (568)	86	SDO	57	0.35	20	36.9	77	—	MPC · JPL
2011 UQ₄₁₀	24 October 2011	M. Alexandersen (568)	62	plutino	39.7	0.27	3	29.2	50.2	—	MPC · JPL
2011 UQ₄₁₁	26 October 2011	M. Alexandersen (568)	150	SDO	62.8	0.41	40	37.3	88.3	—	MPC · JPL
2011 UQ₄₁₂	24 October 2011	M. Alexandersen (568)	107	res · 3:10?	68.4	0.49	17	34.8	102	—	MPC · JPL
2011 UR₄₁₀	24 October 2011	M. Alexandersen (568)	56	plutino	39.8	0.28	17	28.8	50.7	—	MPC · JPL
2011 UR₄₁₁	26 October 2011	M. Alexandersen (568)	75	SDO	62.7	0.44	27	35	90.3	—	MPC · JPL
2011 UR₄₁₂	26 October 2011	M. Alexandersen (568)	66	SDO	50.6	0.32	18	34.3	66.9	—	MPC · JPL
2011 US₄₁₀	24 October 2011	M. Alexandersen (568)	97	plutino	39.7	0.25	12	29.6	49.8	—	MPC · JPL
2011 US₄₁₁	26 October 2011	M. Alexandersen (568)	54	res · 1:3	63.3	0.51	22	31.3	95.3	—	MPC · JPL
2011 US₄₁₂	24 October 2011	M. Alexandersen (568)	98	cubewano (cold)?	48.2	0.17	3	40.3	56.2	—	MPC · JPL
2011 UT₄₁₁	26 October 2011	M. Alexandersen (568)	113	res · 2:5	56	0.41	6	33.2	78.8	—	MPC · JPL
2011 UT₄₁₂	26 October 2011	M. Alexandersen (568)	130	cubewano (hot)?	48.3	0.18	18	39.6	57	—	MPC · JPL
2011 UU₄₁₀	24 October 2011	M. Alexandersen (568)	54	plutino	39.6	0.27	13	29	50.3	—	MPC · JPL
2011 UU₄₁₁	24 October 2011	M. Alexandersen (568)	90	cubewano (cold)	44.2	0.04	2	42.7	45.8	—	MPC · JPL
2011 UU₄₁₂	26 October 2011	Mauna Kea Obs. (568)	56	plutino?	39.3	0.17	23	32.8	45.9	—	MPC · JPL
2011 UV₄₁₀	24 October 2011	M. Alexandersen (568)	129	plutino	39.7	0.26	4	29.3	50.1	—	MPC · JPL
2011 UV₄₁₁	24 October 2011	M. Alexandersen (568)	78	cubewano (cold)	43.6	0.07	4	40.7	46.6	—	MPC · JPL
2011 UV₄₁₂	24 October 2011	Mauna Kea Obs. (568)	93	other TNO	48.9	0.3	12	34.2	63.6	—	MPC · JPL
2011 UW₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.8	0.22	11	31.2	48.4	—	MPC · JPL
2011 UW₄₁₁	24 October 2011	M. Alexandersen (568)	71	cubewano (cold)	44.2	0.17	5	36.6	51.7	—	MPC · JPL
2011 UW₄₁₂	26 October 2011	Mauna Kea Obs. (568)	60	SDO	79.1	0.53	13	37.5	120.8	—	MPC · JPL
2011 UX₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.7	0.33	17	26.5	52.9	—	MPC · JPL
2011 UX₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (hot)	42.7	0.1	7	38.5	46.9	—	MPC · JPL
2011 UX₄₁₂	24 October 2011	Mauna Kea Obs. (568)	113	cubewano (hot)?	44.4	0.08	30	41	47.8	—	MPC · JPL
2011 UY₄₁₀	26 October 2011	M. Alexandersen (568)	71	plutino	39.6	0.14	9	34	45.2	—	MPC · JPL
2011 UY₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (cold)	44.5	0.07	2	41.4	47.6	—	MPC · JPL
2011 UY₄₁₂	24 October 2011	Mauna Kea Obs. (568)	78	cubewano (hot)?	43.1	0.03	8	41.7	44.4	—	MPC · JPL
2011 UZ₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.7	0.12	4	34.9	44.6	—	MPC · JPL
2011 UZ₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (cold)	45.8	0.05	1	43.4	48.2	—	MPC · JPL
2011 UZ₄₁₂	24 October 2011	M. Alexandersen (568)	50	res · 3:4	36.7	0.14	7	31.6	41.8	—	MPC · JPL
2011 WS₄₁	24 November 2011	Pan-STARRS 1 (F51)	1.9	damocloid	37.4	0.94	142	2.1	72.7	—	MPC · JPL
2011 WW₁₈₈	25 November 2011	Pan-STARRS 1 (F51)	133	SDO	51.8	0.31	26	35.8	67.8	—	MPC · JPL

v t e Trans-Neptunian objects
TNO classes	Classical Kuiper belt objects Scattered-disc objects Detached objects Resonant objects Neptune trojans plutinos twotinos TNO moons
Dwarf planets (moons)	Orcus Vanth Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hiʻiaka ring Quaoar Weywot rings Makemake MK2 Gonggong Xiangliu Eris Dysnomia Sedna
Sednoids	Sedna 2012 VP113 'Biden' Leleākūhonua 2023 KQ14 'Ammonite'

List of unnumbered trans-Neptunian objects: 2011

References

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