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 October 2026^[update], it contains a total of 90 bodies. For more information see the description on the main page. Also see list for the previous and next year.

2011

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	71.8	0.51	13	34.9	108.7	albedo: 0.124	MPC JPL
2011 BS₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	178	cubewano (cold)	43.9	0.05	5	41.7	46.1	albedo: 0.152	MPC JPL
2011 BT₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	217	res · 5:12	54.2	0.34	33	35.8	72.6	albedo: 0.126	MPC JPL
2011 BU₁₆₃	30 January 2011	Pan-STARRS 1 (F51)	141	res · 3:8?	58.0	0.38	21	35.7	80.3	albedo: 0.126	MPC JPL
2011 CW₁₁₉	2 February 2011	Pan-STARRS 1 (F51)	112	res · 3:7	53.2	0.37	20	33.4	73.1	albedo: 0.126	MPC JPL
2011 CX₁₁₉	4 February 2011	Pan-STARRS 1 (F51)	233	cubewano (hot)?	41.9	0.14	27	36.0	47.8	albedo: 0.079	MPC JPL
2011 CY₁₁₉	4 February 2011	Pan-STARRS 1 (F51)	135	res · 1:3?	63.0	0.37	22	39.6	86.4	albedo: 0.126	MPC JPL
2011 EZ₉₀	14 March 2011	Pan-STARRS 1 (F51)	238	cubewano (hot)?	41.2	0.07	27	38.2	44.2	albedo: 0.079	MPC JPL
2011 GM₈₉	4 April 2011	Las Campanas Observatory (304)	143	SDO	52.7	0.31	17	36.6	68.7	albedo: 0.124	MPC JPL
2011 HD₁₀₃	28 April 2011	New Horizons KBO Search (268)	77	other TNO	43.9	0.26	6	32.5	55.4	albedo: 0.13	MPC JPL
2011 HE₁₀₃	28 April 2011	New Horizons KBO Search (268)	91	cubewano (hot)?	43.6	0.11	7	38.9	48.2	albedo: 0.079	MPC JPL
2011 HF₁₀₃	29 April 2011	New Horizons KBO Search (268)	118	cubewano (cold)	42.8	0.05	3	40.7	45.0	albedo: 0.152	MPC JPL
2011 HJ₁₀₃	28 April 2011	New Horizons KBO Search (268)	116	cubewano (hot)	46.4	0.15	5	39.3	53.4	albedo: 0.079	MPC JPL
2011 HK₁₀₃	28 April 2011	New Horizons KBO Search (268)	110	other TNO	53.0	0.31	6	36.6	69.3	albedo: 0.13	MPC JPL
2011 HL₁₀₃	28 April 2011	New Horizons KBO Search (268)	98	res · 3:5	41.9	0.12	14	36.7	47.1	albedo: 0.126	MPC JPL
2011 HN₁₀₄	30 April 2011	Pan-STARRS 1 (F51)	121	plutino	39.2	0.29	18	27.8	50.7	albedo: 0.074	MPC JPL
2011 HO₆₀	26 April 2011	European Southern Observatory, La Silla (809)	215	res · 2:11	93.1	0.61	22	36.6	149.6	albedo: 0.126	MPC JPL
2011 HP₈₃	29 April 2011	European Southern Observatory, La Silla (809)	395	SDO	52.1	0.31	29	36.1	68.2	albedo: 0.124	MPC JPL
2011 HZ₁₀₂	28 April 2011	New Horizons KBO Search (268)	66	cubewano (cold)	43.0	0.01	2	42.6	43.4	albedo: 0.152	MPC JPL
2011 JA₃₂	2 May 2011	New Horizons KBO Search (268)	54	cubewano (cold)	46.4	0.13	3	40.3	52.5	albedo: 0.152	MPC JPL
2011 JD₃₂	1 May 2011	New Horizons KBO Search (268)	69	SDO	50.0	0.31	13	34.3	65.7	albedo: 0.124	MPC JPL
2011 JW₃₁	4 May 2011	New Horizons KBO Search (268)	86	cubewano (cold)	45.4	0.09	2	41.2	49.6	albedo: 0.152	MPC JPL
2011 JY₃₁	4 May 2011	New Horizons KBO Search (268)	112	cubewano (cold)	43.8	0.06	3	41.4	46.2	binary: 79 km; albedo: 0.152	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	albedo: 0.13	MPC JPL
2011 LJ₂₉	6 June 2011	Pan-STARRS 1 (F51)	262	cubewano (cold)	43.9	0.08	0	40.4	47.5	albedo: 0.152	MPC JPL
2011 OB₆₀	27 July 2011	Pan-STARRS 1 (F51)	159	SDO	101.3	0.64	20	36.7	166.0	albedo: 0.124	MPC JPL
2011 OR₁₇	29 July 2011	Siding Spring Survey (E12)	15	damocloid	267.9	0.99	110	3.1	532.7	albedo: 0.048	MPC JPL
2011 SW₂₈₁	26 September 2011	Pan-STARRS 1 (F51)	176	cubewano (cold)	46.8	0.10	5	42.2	51.4	albedo: 0.152; taxonomy: IR	MPC JPL
2011 UA₄₁₁	26 October 2011	M. Alexandersen (568)	67	plutino	39.5	0.25	9	29.7	49.4	albedo: 0.074	MPC JPL
2011 UA₄₁₂	24 October 2011	M. Alexandersen (568)	62	cubewano (cold)	46.5	0.15	3	39.4	53.6	albedo: 0.152	MPC JPL
2011 UA₄₁₃	26 October 2011	M. Alexandersen (568)	69	res · 3:4	36.7	0.14	5	31.8	41.7	albedo: 0.126	MPC JPL
2011 UB₄₁₁	26 October 2011	M. Alexandersen (568)	123	plutino?	39.8	0.04	15	38.1	41.5	albedo: 0.074	MPC JPL
2011 UB₄₁₂	24 October 2011	M. Alexandersen (568)	124	cubewano (hot)?	43.7	0.06	15	41.3	46.1	albedo: 0.079	MPC JPL
2011 UC₄₁₂	24 October 2011	M. Alexandersen (568)	93	cubewano (cold)	43.6	0.07	3	40.4	46.8	albedo: 0.152	MPC JPL
2011 UD₄₁₁	26 October 2011	M. Alexandersen (568)	183	plutino	39.4	0.29	16	28.0	50.9	albedo: 0.074	MPC JPL
2011 UD₄₁₂	24 October 2011	M. Alexandersen (568)	197	cubewano (hot)	45.6	0.06	6	43.0	48.2	albedo: 0.079	MPC JPL
2011 UE₄₁₁	24 October 2011	M. Alexandersen (568)	52	twotino	48.0	0.33	9	32.4	63.7	albedo: 0.126	MPC JPL
2011 UE₄₁₂	24 October 2011	M. Alexandersen (568)	216	cubewano (hot)?	43.7	0.11	23	38.9	48.4	albedo: 0.079	MPC JPL
2011 UF₄₁₁	26 October 2011	M. Alexandersen (568)	77	twotino	48.2	0.35	6	31.2	65.2	albedo: 0.126	MPC JPL
2011 UF₄₁₂	24 October 2011	M. Alexandersen (568)	78	cubewano (cold)	45.3	0.01	2	44.9	45.6	albedo: 0.152	MPC JPL
2011 UG₄₁₁	26 October 2011	M. Alexandersen (568)	71	twotino	47.9	0.14	11	41.1	54.8	albedo: 0.126	MPC JPL
2011 UG₄₁₂	26 October 2011	M. Alexandersen (568)	95	cubewano (cold)	46.7	0.16	3	39.4	54.0	albedo: 0.152	MPC JPL
2011 UH₄₁₁	24 October 2011	M. Alexandersen (568)	70	other TNO	46.5	0.24	27	35.2	57.8	albedo: 0.13	MPC JPL
2011 UH₄₁₂	26 October 2011	M. Alexandersen (568)	108	cubewano (hot)?	42.8	0.12	15	37.7	48.0	albedo: 0.079	MPC JPL
2011 UJ₄₁₁	24 October 2011	M. Alexandersen (568)	78	res · 3:5	42.5	0.12	5	37.3	47.8	albedo: 0.126	MPC JPL
2011 UJ₄₁₂	26 October 2011	M. Alexandersen (568)	113	cubewano (hot)?	42.2	0.03	30	41.0	43.4	albedo: 0.079	MPC JPL
2011 UK₄₁₂	26 October 2011	M. Alexandersen (568)	124	cubewano (hot)?	40.9	0.09	26	37.1	44.8	albedo: 0.079	MPC JPL
2011 UK₄₁₃	25 October 2011	Pan-STARRS 1 (F51)	231	cubewano (hot)?	41.8	0.09	14	38.2	45.5	albedo: 0.079	MPC JPL
2011 UL₄₁₁	24 October 2011	M. Alexandersen (568)	68	res · 3:5	42.4	0.08	2	39.2	45.6	albedo: 0.126	MPC JPL
2011 UL₄₁₂	26 October 2011	M. Alexandersen (568)	136	cubewano (hot)	43.2	0.08	10	39.7	46.7	albedo: 0.079	MPC JPL
2011 UM₄₁₁	24 October 2011	M. Alexandersen (568)	124	res · 3:5	42.4	0.14	9	36.3	48.5	albedo: 0.126	MPC JPL
2011 UM₄₁₂	26 October 2011	M. Alexandersen (568)	94	cubewano (hot)	45.6	0.13	11	39.5	51.7	albedo: 0.079	MPC JPL
2011 UN₄₁₁	26 October 2011	M. Alexandersen (568)	54	res · 3:5	42.6	0.21	3	33.5	51.7	albedo: 0.126	MPC JPL
2011 UN₄₁₂	24 October 2011	M. Alexandersen (568)	97	plutino?	39.1	0.06	20	36.9	41.3	albedo: 0.074	MPC JPL
2011 UO₄₁₁	26 October 2011	M. Alexandersen (568)	68	res · 3:5	42.6	0.21	5	33.6	51.5	albedo: 0.126	MPC JPL
2011 UO₄₁₂	26 October 2011	M. Alexandersen (568)	96	other TNO	38.2	0.13	28	33.4	42.9	albedo: 0.13	MPC JPL
2011 UP₄₁₀	24 October 2011	M. Alexandersen (568)	102	plutino	39.9	0.18	3	32.7	47.1	albedo: 0.074	MPC JPL
2011 UP₄₁₁	26 October 2011	M. Alexandersen (568)	78	res · 1:4	76.6	0.50	13	38.6	114.6	albedo: 0.126	MPC JPL
2011 UP₄₁₂	24 October 2011	M. Alexandersen (568)	86	SDO	56.9	0.35	20	36.9	76.8	albedo: 0.124	MPC JPL
2011 UQ₄₁₀	24 October 2011	M. Alexandersen (568)	62	plutino	39.6	0.26	3	29.1	50.1	albedo: 0.074	MPC JPL
2011 UQ₄₁₁	26 October 2011	M. Alexandersen (568)	150	SDO	62.7	0.41	40	37.3	88.2	albedo: 0.124	MPC JPL
2011 UQ₄₁₂	24 October 2011	M. Alexandersen (568)	107	res · 3:10?	68.2	0.49	17	34.8	101.6	albedo: 0.126	MPC JPL
2011 UR₄₁₀	24 October 2011	M. Alexandersen (568)	56	plutino	39.7	0.27	17	28.8	50.6	albedo: 0.074	MPC JPL
2011 UR₄₁₁	26 October 2011	M. Alexandersen (568)	75	SDO	62.6	0.44	27	35.0	90.1	albedo: 0.124	MPC JPL
2011 UR₄₁₂	26 October 2011	M. Alexandersen (568)	66	SDO	50.5	0.32	18	34.3	66.7	albedo: 0.124	MPC JPL
2011 US₄₁₀	24 October 2011	M. Alexandersen (568)	93	plutino	39.7	0.25	12	29.6	49.7	albedo: 0.074	MPC JPL
2011 US₄₁₁	26 October 2011	M. Alexandersen (568)	54	res · 1:3	63.1	0.51	22	31.3	95.0	albedo: 0.126	MPC JPL
2011 US₄₁₂	24 October 2011	M. Alexandersen (568)	98	cubewano (cold)?	48.1	0.16	3	40.2	56.1	albedo: 0.152	MPC JPL
2011 UT₄₁₁	26 October 2011	M. Alexandersen (568)	113	res · 2:5	55.9	0.41	6	33.2	78.7	albedo: 0.126	MPC JPL
2011 UT₄₁₂	26 October 2011	M. Alexandersen (568)	126	cubewano (hot)?	48.2	0.18	18	39.6	56.9	albedo: 0.079	MPC JPL
2011 UU₄₁₀	24 October 2011	M. Alexandersen (568)	54	plutino	39.6	0.27	13	29.0	50.1	albedo: 0.074	MPC JPL
2011 UU₄₁₁	24 October 2011	M. Alexandersen (568)	90	cubewano (cold)	44.2	0.03	2	42.6	45.7	albedo: 0.152	MPC JPL
2011 UU₄₁₂	26 October 2011	Maunakea (568)	42	other TNO	39.3	0.17	23	32.8	45.9	albedo: 0.13	MPC JPL
2011 UV₄₁₀	24 October 2011	M. Alexandersen (568)	126	plutino	39.7	0.26	4	29.3	50.0	albedo: 0.074	MPC JPL
2011 UV₄₁₁	24 October 2011	M. Alexandersen (568)	78	cubewano (cold)	43.6	0.07	4	40.6	46.5	albedo: 0.152	MPC JPL
2011 UV₄₁₂	24 October 2011	Maunakea (568)	93	other TNO	48.8	0.30	12	34.2	63.5	albedo: 0.13	MPC JPL
2011 UW₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.7	0.22	11	31.2	48.3	albedo: 0.074	MPC JPL
2011 UW₄₁₁	24 October 2011	M. Alexandersen (568)	71	cubewano (cold)	44.1	0.17	5	36.6	51.6	albedo: 0.152	MPC JPL
2011 UW₄₁₂	26 October 2011	Maunakea (568)	60	SDO	78.9	0.53	13	37.5	120.3	albedo: 0.124	MPC JPL
2011 UX₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.7	0.33	18	26.5	52.9	albedo: 0.074	MPC JPL
2011 UX₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (hot)	42.6	0.10	7	38.4	46.8	albedo: 0.079	MPC JPL
2011 UX₄₁₂	24 October 2011	Maunakea (568)	113	cubewano (hot)?	44.4	0.08	30	41.0	47.8	albedo: 0.079	MPC JPL
2011 UY₄₁₀	26 October 2011	M. Alexandersen (568)	71	plutino	39.5	0.14	9	34.0	45.0	albedo: 0.074	MPC JPL
2011 UY₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (cold)	44.4	0.07	2	41.4	47.5	albedo: 0.152	MPC JPL
2011 UY₄₁₂	24 October 2011	Maunakea (568)	78	cubewano (hot)?	43.1	0.03	8	41.7	44.4	albedo: 0.079	MPC JPL
2011 UZ₄₁₀	26 October 2011	M. Alexandersen (568)	107	plutino	39.7	0.12	4	34.8	44.5	albedo: 0.074	MPC JPL
2011 UZ₄₁₁	24 October 2011	M. Alexandersen (568)	94	cubewano (cold)	45.7	0.05	1	43.4	48.1	albedo: 0.152	MPC JPL
2011 UZ₄₁₂	24 October 2011	M. Alexandersen (568)	50	res · 3:4	36.7	0.14	7	31.6	41.7	albedo: 0.126	MPC JPL
2011 WS₄₁	24 November 2011	Pan-STARRS 1 (F51)	1.9	damocloid	37.4	0.94	142	2.1	72.8	albedo: 0.048	MPC JPL
2011 WW₁₈₈	25 November 2011	Pan-STARRS 1 (F51)	133	SDO	51.8	0.31	26	35.8	67.9	albedo: 0.124	MPC JPL

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References

↑ "Lists and Plots: Minor Planets". Minor Planet Center. 29 October 2026. Retrieved 29 October 2026.
↑ "MPC Database Search: a ≥ 30.1 AU". Minor Planet Center. Archived from the original on 23 October 2025. Retrieved 29 October 2026.
↑ "List of Known Trans-Neptunian Objects". Johnston's Archive. 19 January 2026. Retrieved 1 March 2026.

[MPC-Lists-1] "Lists and Plots: Minor Planets". Minor Planet Center. 29 October 2026. Retrieved 29 October 2026.

[MPC-a30.1-2] "MPC Database Search: a ≥ 30.1 AU". Minor Planet Center. Archived from the original on 23 October 2025. Retrieved 29 October 2026.

[TNO-list-Johnstons-3] "List of Known Trans-Neptunian Objects". Johnston's Archive. 19 January 2026. Retrieved 1 March 2026.

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 MK 2 Gonggong Xiangliu Eris Dysnomia Sedna
Sednoids	Sedna 2012 VP113 'Biden' Leleākūhonua 2023 KQ14 'Ammonite'