List of unnumbered trans-Neptunian objects: 2005

The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2005. As of March 2026^[update], it contains a total of 66 bodies.^[1]^[2]^[3]^[4] For more information see the description on the main page. Also see list for the previous and next year.

[1]

[2]

[3]

[4]

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
2005 BV₄₉	16 January 2005	B. Gladman (568)	209	cubewano (hot)	43.4	0.04	8	41.7	45.1	—	MPC · JPL
2005 BW₄₉	16 January 2005	B. Gladman (568)	159	cubewano (cold)	43.8	0.07	2	40.6	47.0	binary: 123 km	MPC · JPL
2005 CD₈₁	10 February 2005	CFEPS (568)	184	plutino	39.1	0.16	21	33.0	45.2	—	MPC · JPL
2005 CE₈₁	10 February 2005	B. Gladman (568)	80	cubewano (cold)	42.4	0.04	3	40.7	44.2	binary: 76 km	MPC · JPL
2005 CF₈₁	10 February 2005	CFEPS (568)	79	res · 3:4	36.3	0.06	0	34.1	38.4	—	MPC · JPL
2005 EB₃₁₈	9 March 2005	M. W. Buie (695)	157	cubewano?	44.9	0.14	5	38.6	51.3	—	MPC · JPL
2005 EC₃₁₈	11 March 2005	M. W. Buie (695)	179	cubewano (cold)	43.5	0.04	3	41.8	45.1	—	MPC · JPL
2005 ED₃₀₀	11 March 2005	Kitt Peak Obs. (695)	125	cubewano?	43.9	0.08	2	40.4	47.5	—	MPC · JPL
2005 EE₂₉₆	9 March 2005	M. W. Buie (695)	152	cubewano (cold)	43.9	0.07	3	40.8	47.0	—	MPC · JPL
2005 EF₃₀₄	11 March 2005	M. W. Buie (695)	131	SDO	85.9	0.55	19	38.5	133	—	MPC · JPL
2005 EH₃₀₅	11 March 2005	Kitt Peak Obs. (695)	180	cubewano?	44.1	0.09	8	40.1	48.0	—	MPC · JPL
2005 EJ₃₀₀	11 March 2005	Kitt Peak Obs. (695)	105	other TNO	43.1	0.00	22	43.1	43.1	—	MPC · JPL
2005 EK₂₉₈	11 March 2005	Kitt Peak Obs. (695)	150	plutino?	39.6	0.13	40	34.4	44.7	—	MPC · JPL
2005 EM₃₀₃	11 March 2005	M. W. Buie (695)	155	cubewano (hot)	43.4	0.02	6	42.7	44.2	—	MPC · JPL
2005 EO₂₉₆	9 March 2005	Kitt Peak Obs. (695)	172	cubewano?	45.1	0.09	1	41.2	49.1	—	MPC · JPL
2005 EP₂₉₆	9 March 2005	Kitt Peak Obs. (695)	125	cubewano?	46.8	0.00	3	46.8	46.8	—	MPC · JPL
2005 EW₃₁₈	8 March 2005	H. G. Roe M. E. Brown K. M. Barkume (675)	200	cubewano (cold)	44.3	0.08	1	40.8	47.7	—	MPC · JPL
2005 EX₃₁₈	8 March 2005	H. G. Roe M. E. Brown K. M. Barkume (675)	188	plutino	39.4	0.22	7	30.7	48.0	—	MPC · JPL
2005 GA₁₈₇	10 April 2005	M. W. Buie (695)	150	plutino	39.4	0.22	19	30.8	48.1	—	MPC · JPL
2005 GC₁₈₇	10 April 2005	M. W. Buie (695)	121	cubewano (cold)	44.1	0.12	2	38.7	49.5	—	MPC · JPL
2005 GD₁₈₇	12 April 2005	M. W. Buie (695)	89	cubewano (cold)	42.8	0.03	1	41.7	43.9	binary: 74 km	MPC · JPL
2005 GF₁₈₇	12 April 2005	M. W. Buie (695)	108	plutino	39.6	0.26	4	29.4	49.8	—	MPC · JPL
2005 GH₂₂₈	5 April 2005	CFEPS (568)	111	centaur	36.4	0.18	17	29.8	43.1	—	MPC · JPL
2005 GV₂₁₀	12 April 2005	M. W. Buie (695)	226	plutino	39.1	0.17	12	32.4	45.8	—	MPC · JPL
2005 GW₁₈₆	10 April 2005	Kitt Peak Obs. (695)	150	cubewano?	43.2	0.15	3	36.9	49.5	—	MPC · JPL
2005 GW₂₁₀	12 April 2005	Kitt Peak Obs. (695)	150	plutino?	39.7	0.27	25	28.9	50.4	—	MPC · JPL
2005 GX₁₈₆	10 April 2005	M. W. Buie (695)	118	cubewano (cold)	43.7	0.02	4	43.0	44.5	—	MPC · JPL
2005 GY₂₀₆	11 April 2005	Palomar Obs. (675)	136	plutino?	39.7	0.12	20	34.8	44.6	—	MPC · JPL
2005 GZ₁₈₆	10 April 2005	Kitt Peak Obs. (695)	137	cubewano?	43.8	0.13	8	38.2	49.5	—	MPC · JPL
2005 GZ₂₀₆	13 April 2005	Palomar Obs. (675)	151	other TNO	44.7	0.11	27	39.7	49.7	—	MPC · JPL
2005 JA₁₈₆	14 May 2005	Mauna Kea Obs. (568)	125	cubewano?	45.8	0.04	4	44.0	47.5	—	MPC · JPL
2005 JB₁₈₆	14 May 2005	P. A. Wiegert A. Papadimos (568)	120	other TNO	41.6	0.11	20	37.1	46.2	—	MPC · JPL
2005 JH₁₇₇	11 May 2005	M. W. Buie (807)	132	cubewano (cold)	44.5	0.09	3	40.4	48.5	—	MPC · JPL
2005 JJ₁₈₆	12 May 2005	B. Gladman (568)	159	cubewano (cold)	44.9	0.10	4	40.4	49.3	—	MPC · JPL
2005 JK₁₈₆	12 May 2005	CFEPS (568)	173	twotino?	47.6	0.25	27	35.7	59.5	—	MPC · JPL
2005 JO₁₇₉	10 May 2005	Cerro Tololo Obs. (807)	157	cubewano?	43.6	0.05	2	41.5	45.7	—	MPC · JPL
2005 JQ₁₇₉	11 May 2005	Cerro Tololo Obs. (807)	189	cubewano?	42.6	0.03	3	41.3	44.0	—	MPC · JPL
2005 JR₁₀₆	12 May 2005	Steward Obs. Kitt Peak (691)	10	unusual	44.3	0.92	19	3.7	84.8	—	MPC · JPL
2005 JY₁₈₅	12 May 2005	P. A. Wiegert A. Papadimos (568)	145	cubewano (cold)	44.2	0.06	2	41.4	47.0	—	MPC · JPL
2005 JZ₁₇₄	9 May 2005	M. W. Buie (807)	235	cubewano (hot)	42.6	0.08	7	39.4	45.8	—	MPC · JPL
2005 LA₅₄	10 June 2005	B. Gladman (568)	257	cubewano (hot)	44.5	0.07	8	41.3	47.6	—	MPC · JPL
2005 LB₅₄	10 June 2005	B. Gladman (568)	230	cubewano (cold)	43.8	0.05	3	41.6	46.0	—	MPC · JPL
2005 LC₅₄	10 June 2005	CFEPS (568)	173	SDO	68.1	0.47	22	36.1	100.0	—	MPC · JPL
2005 NU₁₂₅	7 July 2005	P. A. Wiegert A. M. Gilbert (568)	185	SDO	82.2	0.52	37	39.8	125	—	MPC · JPL
2005 OE	16 July 2005	Catalina Sky Survey (703)	11	damocloid	63.27	0.9	67.50	3.0	123.4	—	MPC · JPL
2005 PD₂₃	2 August 2005	Mauna Kea Obs. (568)	68	cubewano?	44.1	0.01	1	43.5	44.6	—	MPC · JPL
2005 PE₂₃	2 August 2005	Mauna Kea Obs. (568)	33	other TNO	43.8	0.04	21	42.0	45.6	—	MPC · JPL
2005 PF₂₃	2 August 2005	Mauna Kea Obs. (568)	39	cubewano?	44.9	0.08	1	41.1	48.7	—	MPC · JPL
2005 PG₂₃	2 August 2005	Mauna Kea Obs. (568)	47	cubewano?	45.9	0.18	2	37.5	54.2	—	MPC · JPL
2005 PH₂₃	2 August 2005	Mauna Kea Obs. (568)	52	cubewano?	44.1	0.06	4	41.6	46.6	—	MPC · JPL
2005 PK₂₁	8 August 2005	Cerro Tololo Obs. (807)	137	cubewano?	44.3	0.09	4	40.5	48.1	—	MPC · JPL
2005 PL₂₁	8 August 2005	Cerro Tololo Obs. (807)	159	cubewano (cold)	46.9	0.15	5	39.9	54.0	—	MPC · JPL
2005 PM₂₁	8 August 2005	Cerro Tololo Obs. (807)	199	other TNO	43.7	0.14	29	37.8	49.6	—	MPC · JPL
2005 PN₂₁	8 August 2005	Cerro Tololo Obs. (807)	189	cubewano?	45.7	0.00	3	45.7	45.7	—	MPC · JPL
2005 PO₂₁	8 August 2005	Cerro Tololo Obs. (807)	143	cubewano?	43.3	0.00	3	43.3	43.3	—	MPC · JPL
2005 PP₂₁	8 August 2005	Cerro Tololo Obs. (807)	172	cubewano?	45.5	0.09	2	41.5	49.5	—	MPC · JPL
2005 PS₂₁	9 August 2005	Cerro Tololo Obs. (807)	155	cubewano (cold)	44.8	0.08	3	41.2	48.4	—	MPC · JPL
2005 PT₂₁	9 August 2005	Cerro Tololo Obs. (807)	138	SDO	76.0	0.53	8	36.0	116	—	MPC · JPL
2005 RH52	3 September 2005	CFEPS (568)	123	SDO	160	0.76	20	39.0	281	ETNO	MPC · JPL
2005 TT₂₂₇	—	—	—	—	39.4	0.28	13	28.3	50.5	—	MPC · JPL
2005 TV₁₈₉	3 October 2005	Palomar Obs. (675)	150	plutino	39.3	0.19	34	31.9	46.7	—	MPC · JPL
2005 VA₁₂₃	2 November 2005	Kitt Peak Obs. (695)	164	plutino	39.5	0.25	2	29.5	49.6	—	MPC · JPL
2005 VX3	1 November 2005	Mt. Lemmon Survey (G96)	9	damocloid	769.73	0.9	112.44	4.1	1535.3	—	MPC · JPL
2005 VZ₁₂₂	2 November 2005	Kitt Peak Obs. (695)	127	res · 5:8	41.2	0.18	12	33.8	48.7	binary: 59 km	MPC · JPL
2005 YL₂₉₂	24 December 2005	Mauna Kea Obs. (568)	68	cubewano?	44.7	0.15	5	38.0	51.4	—	MPC · JPL
2005 YM₂₉₂	24 December 2005	Mauna Kea Obs. (568)	138	other TNO	46.0	0.02	28	45.0	47.0	—	MPC · JPL

List of unnumbered trans-Neptunian objects: 2005

2005

References

Related Articles