List of unnumbered trans-Neptunian objects: 2003

The following is a partial list of unnumbered trans-Neptunian objects for principal designations assigned within 2003. As of April 2022, it contains a total of 118 bodies. ^{[1] [2] [3]} For more information see the description on the main page. Also see list for the previous and next year .

2003

See also: List of unnumbered trans-Neptunian objects

Designation	First Observed (discovered)		D (km)	Orbital description						Remarks	Refs
	Date	Observer (Site)		Class	a (AU)	e	i (°)	q (AU)	Q (AU)
2003 BF91	27 January 2003	Hubble Space Telescope ( 250 )	16	cubewano?	42.7	0.01	2	42.1	43.4	—	MPC  · JPL
2003 BG91	27 January 2003	Hubble Space Telescope (250)	25	cubewano?	43.4	0.10	3	39.1	47.8	—	MPC  · JPL
2003 BH91	27 January 2003	Hubble Space Telescope (250)	14	cubewano?	44.0	0.03	2	42.6	45.4	—	MPC  · JPL
2003 FA130	24 March 2003	Mauna Kea Obs. ( 568 )	121	cubewano (cold)	42.5	0.03	0	41.2	43.8	—	MPC  · JPL
2003 FB130	24 March 2003	Mauna Kea Obs. (568)	132	other TNO	43.0	0.11	24	38.2	47.8	—	MPC  · JPL
2003 FD128	31 March 2003	M. W. Buie ( 695 )	178	cubewano (hot)	38.1	0.02	5	37.4	38.9	—	MPC  · JPL
2003 FH127	30 March 2003	Kitt Peak Obs. (695)	167	cubewano (cold)	44.8	0.08	0	41.1	48.5	—	MPC  · JPL
2003 FH129	30 March 2003	M. W. Buie (695)	122	centaur	70.1	0.61	19	27.6	113	—	MPC  · JPL
2003 FJ127	30 March 2003	M. W. Buie (695)	132	other TNO	44.7	0.26	23	33.1	56.3	—	MPC  · JPL
2003 FL127	31 March 2003	M. W. Buie (695)	260	plutino	39.1	0.24	4	29.7	48.5	—	MPC  · JPL
2003 FM127	31 March 2003	M. W. Buie (695)	126	cubewano (cold)	43.7	0.06	4	41.2	46.2	—	MPC  · JPL
2003 FM129	31 March 2003	DLS ( 807 )	198	SDO	50.7	0.28	18	36.5	64.8	—	MPC  · JPL
2003 FZ129	24 March 2003	Mauna Kea Obs. ( 568 )	125	SDO	61.6	0.38	6	38.1	85.1	BR-mag: 1.32; taxonomy: BR	MPC  · JPL
2003 GF55	1 April 2003	M. W. Buie ( 695 )	246	cubewano (hot)	45.4	0.05	6	43.1	47.8	—	MPC  · JPL
2003 GM53	1 April 2003	Kitt Peak Obs. (695)	143	cubewano?	44.5	0.05	7	42.2	46.7	—	MPC  · JPL
2003 HA57	26 April 2003	Mauna Kea Obs. ( 568 )	113	plutino	39.4	0.17	28	32.7	46.1	—	MPC  · JPL
2003 HF57	26 April 2003	Mauna Kea Obs. (568)	90	plutino	39.3	0.19	1	31.8	46.8	—	MPC  · JPL
2003 HH57	26 April 2003	Mauna Kea Obs. (568)	110	cubewano (cold)	43.9	0.08	1	40.3	47.6	—	MPC  · JPL
2003 HJ57	26 April 2003	Mauna Kea Obs. (568)	103	plutino?	39.7	0.25	22	29.8	49.6	—	MPC  · JPL
2003 HK57	26 April 2003	Mauna Kea Obs. (568)	86	cubewano?	43.4	0.07	6	40.2	46.7	—	MPC  · JPL
2003 HL57	26 April 2003	Mauna Kea Obs. (568)	189	cubewano?	79.3	0.65	6	27.8	131	—	MPC  · JPL
2003 HM57	26 April 2003	Mauna Kea Obs. (568)	116	centaur	42.7	0.68	11	13.5	71.8	—	MPC  · JPL
2003 HN57	26 April 2003	Mauna Kea Obs. (568)	109	cubewano?	44.4	0.07	2	41.5	47.4	—	MPC  · JPL
2003 HO57	26 April 2003	Mauna Kea Obs. (568)	83	cubewano (cold)	46.2	0.15	4	39.1	53.3	—	MPC  · JPL
2003 HP57	26 April 2003	Mauna Kea Obs. (568)	218	other TNO	46.7	0.19	38	37.9	55.4	—	MPC  · JPL
2003 HX56	26 April 2003	Mauna Kea Obs. (568)	158	other TNO	47.0	0.22	30	36.6	57.5	BR-mag: 1.01	MPC  · JPL
2003 HZ56	26 April 2003	Mauna Kea Obs. (568)	105	cubewano (cold)	43.5	0.00	3	43.5	43.5	—	MPC  · JPL
2003 KO20	30 May 2003	M. W. Buie ( 807 )	159	cubewano (cold)	43.9	0.04	2	41.9	45.9	—	MPC  · JPL
2003 KP20	30 May 2003	Cerro Tololo Obs. (807)	125	cubewano?	44.8	0.12	2	39.5	50.2	—	MPC  · JPL
2003 LA7	1 June 2003	M. W. Buie (807)	181	res  · 1:4	77.1	0.53	6	35.9	118	—	MPC  · JPL
2003 LC7	1 June 2003	Cerro Tololo Obs. (807)	197	cubewano?	45.1	0.12	5	39.9	50.4	—	MPC  · JPL
2003 LD7	1 June 2003	Cerro Tololo Obs. (807)	143	cubewano?	42.9	0.04	2	41.1	44.7	—	MPC  · JPL
2003 LD9	1 June 2003	M. W. Buie K. J. Meech (807)	182	other TNO	47.4	0.17	7	39.3	55.5	—	MPC  · JPL
2003 LE7	1 June 2003	Cerro Tololo Obs. (807)	143	plutino?	39.3	0.21	19	31.2	47.4	—	MPC  · JPL
2003 LF7	1 June 2003	Cerro Tololo Obs. (807)	124	plutino?	39.5	0.13	3	34.5	44.5	—	MPC  · JPL
2003 LZ6	1 June 2003	Cerro Tololo Obs. (807)	172	cubewano?	43.5	0.00	7	43.5	43.5	—	MPC  · JPL
2003 MM13	25 June 2003	Mauna Kea Obs. ( 568 )	297	centaur	36.2	0.44	2	20.1	52.2	—	MPC  · JPL
2003 OS33	31 July 2003	Mauna Kea Obs. (568)	119	SDO	70.0	0.52	21	33.3	107	—	MPC  · JPL
2003 QB112	26 August 2003	M. W. Buie ( 807 )	186	cubewano (hot)	44.4	0.11	11	39.3	49.4	—	MPC  · JPL
2003 QC91	25 August 2003	Cerro Tololo Obs. (807)	137	cubewano?	43.5	0.00	3	43.5	43.5	—	MPC  · JPL
2003 QD91	23 August 2003	M. W. Buie (807)	115	cubewano (cold)	43.6	0.04	2	41.9	45.3	—	MPC  · JPL
2003 QE91	23 August 2003	M. W. Buie (807)	114	cubewano (cold)	43.3	0.05	4	41.0	45.6	—	MPC  · JPL
2003 QE112	26 August 2003	M. W. Buie (807)	170	cubewano (cold)	43.4	0.04	4	41.8	45.0	—	MPC  · JPL
2003 QF91	23 August 2003	M. W. Buie (807)	111	cubewano (cold)	43.3	0.04	2	41.6	45.0	—	MPC  · JPL
2003 QG91	24 August 2003	M. W. Buie (807)	112	cubewano (cold)	42.9	0.02	2	41.8	43.9	—	MPC  · JPL
2003 QJ91	24 August 2003	M. W. Buie (807)	144	cubewano (cold)	44.6	0.04	3	42.8	46.5	—	MPC  · JPL
2003 QL91	25 August 2003	M. W. Buie (807)	132	cubewano (cold)	43.4	0.02	2	42.6	44.1	—	MPC  · JPL
2003 QM91	25 August 2003	M. W. Buie (807)	167	cubewano (cold)	43.5	0.05	3	41.2	45.7	—	MPC  · JPL
2003 QM112	29 August 2003	Mauna Kea Obs. ( 568 )	8	centaur	83.4	0.84	16	13.2	154	—	MPC  · JPL
2003 QN91	23 August 2003	M. W. Buie ( 807 )	115	cubewano (cold)	42.9	0.12	4	38.0	47.9	—	MPC  · JPL
2003 QO112	29 August 2003	Mauna Kea Obs. ( 568 )	23	centaur	33.3	0.50	7	16.5	50.1	—	MPC  · JPL
2003 QP91	23 August 2003	M. W. Buie ( 807 )	120	res  · 3:4	36.7	0.10	7	33.1	40.3	—	MPC  · JPL
2003 QS91	25 August 2003	M. W. Buie (807)	96	cubewano (cold)	46.6	0.15	4	39.6	53.6	—	MPC  · JPL
2003 QT90	23 August 2003	M. W. Buie (807)	145	cubewano (cold)	44.2	0.05	2	41.8	46.6	—	MPC  · JPL
2003 QU90	23 August 2003	Cerro Tololo Obs. (807)	121	cubewano (cold)	43.4	0.01	2	43.0	43.7	—	MPC  · JPL
2003 QU91	25 August 2003	Cerro Tololo Obs. (807)	138	other TNO	43.6	0.14	26	37.6	49.7	—	MPC  · JPL
2003 QV91	23 August 2003	Cerro Tololo Obs. (807)	150	plutino?	39.5	0.35	33	25.7	53.3	—	MPC  · JPL
2003 QW91	23 August 2003	Cerro Tololo Obs. (807)	72	plutino?	39.5	0.27	5	28.7	50.2	—	MPC  · JPL
2003 QX90	24 August 2003	M. W. Buie (807)	145	cubewano (cold)	44.1	0.01	3	43.5	44.8	—	MPC  · JPL
2003 QX91	23 August 2003	M. W. Buie (807)	74	res  · 4:7	44.0	0.26	28	32.8	55.3	—	MPC  · JPL
2003 QY90	24 August 2003	M. W. Buie (807)	81	cubewano (cold)	43.1	0.04	4	41.2	45.0	albedo: 0.310; binary: 80 km	MPC  · JPL
2003 QY91	23 August 2003	Cerro Tololo Obs. (807)	109	SDO	82.5	0.61	26	32.0	133	—	MPC  · JPL
2003 QY113	31 August 2003	Mauna Kea Obs. ( 568 )	157	cubewano?	45.3	0.03	3	43.9	46.8	—	MPC  · JPL
2003 QZ90	24 August 2003	Cerro Tololo Obs. ( 807 )	157	cubewano?	43.6	0.00	6	43.6	43.6	—	MPC  · JPL
2003 SO317	25 September 2003	Mauna Kea Obs. ( 568 )	112	plutino	39.6	0.28	7	28.6	50.6	—	MPC  · JPL
2003 SS422	28 September 2003	Cerro Tololo Obs. ( 807 )	137	SDO	199	0.80	17	39.6	359	ETNO	MPC  · JPL
2003 TJ58	3 October 2003	Mauna Kea Obs. ( 568 )	65	cubewano (cold)	44.3	0.09	1	40.5	48.2	albedo: 0.285; binary: 51 km	MPC  · JPL
2003 TK58	3 October 2003	Mauna Kea Obs. (568)	145	cubewano (cold)	43.0	0.07	3	40.2	45.9	—	MPC  · JPL
2003 TL58	3 October 2003	Mauna Kea Obs. (568)	204	cubewano (hot)	43.4	0.04	8	41.6	45.3	—	MPC  · JPL
2003 UA292	22 October 2003	Kitt Peak Obs. ( 695 )	207	cubewano?	46.8	0.15	11	39.8	53.8	—	MPC  · JPL
2003 UA414	18 October 2003	NEAT ( 644 )	357	res  · 2:9	83.3	0.56	22	36.6	130	—	MPC  · JPL
2003 UB292	23 October 2003	M. W. Buie ( 695 )	277	other TNO	47.2	0.05	19	44.8	49.7	—	MPC  · JPL
2003 UC292	23 October 2003	Kitt Peak Obs. (695)	143	cubewano?	45.1	0.09	4	41.2	49.1	—	MPC  · JPL
2003 UC414	30 October 2003	Cerro Tololo Obs. ( 807 )	122	centaur	44.9	0.64	26	16.3	73.5	—	MPC  · JPL
2003 UD292	23 October 2003	Kitt Peak Obs. ( 695 )	164	cubewano?	46.0	0.11	8	40.9	51.1	—	MPC  · JPL
2003 UE292	23 October 2003	Kitt Peak Obs. (695)	190	other TNO	43.5	0.14	19	37.6	49.3	—	MPC  · JPL
2003 UF292	23 October 2003	Kitt Peak Obs. (695)	144	other TNO	44.8	0.13	31	39.1	50.5	—	MPC  · JPL
2003 UG292	23 October 2003	Kitt Peak Obs. (695)	204	cubewano (hot)	43.4	0.10	7	39.1	47.7	—	MPC  · JPL
2003 UH292	24 October 2003	Kitt Peak Obs. (695)	99	cubewano?	43.9	0.07	7	41.0	46.9	—	MPC  · JPL
2003 UK292	24 October 2003	Kitt Peak Obs. (695)	125	cubewano?	43.2	0.11	13	38.5	47.9	—	MPC  · JPL
2003 UK293	23 October 2003	M. W. Buie (695)	110	cubewano (cold)	42.5	0.07	3	39.4	45.6	—	MPC  · JPL
2003 UL292	24 October 2003	Kitt Peak Obs. (695)	119	cubewano?	44.9	0.07	4	41.5	48.3	—	MPC  · JPL
2003 UM292	24 October 2003	Kitt Peak Obs. (695)	166	other TNO	46.1	0.19	18	37.4	54.7	—	MPC  · JPL
2003 UN292	24 October 2003	M. W. Buie (695)	105	cubewano (cold)	44.9	0.11	1	40.1	49.8	—	MPC  · JPL
2003 UO292	22 October 2003	Kitt Peak Obs. (695)	157	plutino?	39.4	0.19	5	32.0	46.8	—	MPC  · JPL
2003 UP292	23 October 2003	M. W. Buie (695)	126	twotino	47.8	0.42	13	27.9	67.8	—	MPC  · JPL
2003 UQ292	23 October 2003	Kitt Peak Obs. (695)	188	plutino?	39.5	0.12	3	34.6	44.4	—	MPC  · JPL
2003 US291	22 October 2003	Kitt Peak Obs. (695)	158	other TNO	44.9	0.00	24	44.9	44.9	—	MPC  · JPL
2003 UT291	22 October 2003	M. W. Buie (695)	174	cubewano (cold)	42.9	0.06	2	40.2	45.5	—	MPC  · JPL
2003 UU292	24 October 2003	Kitt Peak Obs. (695)	108	plutino?	39.5	0.13	17	34.3	44.7	—	MPC  · JPL
2003 UV291	23 October 2003	M. W. Buie (695)	115	cubewano (cold)	43.8	0.04	2	42.2	45.3	—	MPC  · JPL
2003 UV292	24 October 2003	M. W. Buie (695)	157	plutino	39.4	0.22	11	30.8	47.9	—	MPC  · JPL
2003 UW291	23 October 2003	Kitt Peak Obs. (695)	189	cubewano?	44.6	0.00	12	44.6	44.6	—	MPC  · JPL
2003 UX291	23 October 2003	Kitt Peak Obs. (695)	137	cubewano?	46.5	0.00	11	46.5	46.5	—	MPC  · JPL
2003 UX292	23 October 2003	Kitt Peak Obs. (695)	164	cubewano?	44.1	0.12	11	38.6	49.5	—	MPC  · JPL
2003 UY291	24 October 2003	M. W. Buie (695)	120	cubewano (cold)	49.3	0.17	4	41.1	57.4	BR-mag: 1.39; taxonomy: BB	MPC  · JPL
2003 UZ291	22 October 2003	M. W. Buie (695)	196	cubewano (hot)	45.1	0.13	5	39.3	51.0	—	MPC  · JPL
2003 UZ292	24 October 2003	Kitt Peak Obs. (695)	120	other TNO	43.1	0.14	22	37.2	49.1	—	MPC  · JPL
2003 WA191	23 November 2003	M. W. Buie (695)	104	plutino	39.3	0.24	5	30.0	48.5	—	MPC  · JPL
2003 WN193	17 November 2003	Cerro Tololo Obs. ( 807 )	94	plutino	39.4	0.25	22	29.4	49.4	—	MPC  · JPL
2003 WO193	29 November 2003	Cerro Tololo Obs. (807)	108	plutino	39.7	0.25	7	29.8	49.5	—	MPC  · JPL
2003 WQ188	20 November 2003	Kitt Peak Obs. ( 695 )	227	cubewano?	46.3	0.00	6	46.3	46.3	—	MPC  · JPL
2003 WS184	20 November 2003	Kitt Peak Obs. (695)	114	cubewano?	44.0	0.05	3	41.8	46.2	—	MPC  · JPL
2003 WS188	20 November 2003	Kitt Peak Obs. (695)	75	plutino?	39.3	0.24	6	30.0	48.7	—	MPC  · JPL
2003 WV188	20 November 2003	Kitt Peak Obs. (695)	130	cubewano?	45.9	0.00	8	45.9	45.9	—	MPC  · JPL
2003 WW188	21 November 2003	Kitt Peak Obs. (695)	114	cubewano?	44.3	0.08	5	40.9	47.6	—	MPC  · JPL
2003 YJ179	16 December 2003	Mauna Kea Obs. ( 568 )	126	cubewano (cold)	43.6	0.08	1	40.2	47.0	—	MPC  · JPL
2003 YK179	16 December 2003	Mauna Kea Obs. (568)	132	other TNO	41.6	0.14	20	35.7	47.4	—	MPC  · JPL
2003 YM179	16 December 2003	Mauna Kea Obs. (568)	105	other TNO	40.9	0.06	23	38.4	43.4	—	MPC  · JPL
2003 YN179	16 December 2003	Mauna Kea Obs. (568)	145	cubewano (cold)	44.2	0.01	3	43.8	44.5	—	MPC  · JPL
2003 YP179	24 December 2003	Mauna Kea Obs. (568)	113	cubewano (cold)	43.8	0.08	1	40.3	47.3	—	MPC  · JPL
2003 YR179	24 December 2003	Mauna Kea Obs. (568)	195	cubewano (hot)	43.2	0.05	10	41.1	45.2	—	MPC  · JPL
2003 YS179	24 December 2003	Mauna Kea Obs. (568)	109	cubewano (cold)	43.3	0.02	4	42.4	44.3	binary: 95 km	MPC  · JPL
2003 YT179	24 December 2003	Mauna Kea Obs. (568)	126	cubewano (cold)	43.3	0.03	2	42.1	44.6	—	MPC  · JPL
2003 YV179	24 December 2003	Mauna Kea Obs. (568)	166	other TNO	46.7	0.21	16	36.7	56.6	—	MPC  · JPL
2003 YX179	24 December 2003	Mauna Kea Obs. (568)	132	cubewano (cold)	43.3	0.04	5	41.7	45.0	—	MPC  · JPL
2003 YY179	16 December 2003	Mauna Kea Obs. (568)	72	plutino?	39.6	0.16	11	33.4	45.7	—	MPC  · JPL
2003 YZ179	24 December 2003	Mauna Kea Obs. (568)	104	cubewano?	43.2	0.12	13	38.2	48.1	—	MPC  · JPL

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References

1. "List Of Transneptunian Objects". Minor Planet Center. 16 April 2022. Retrieved 16 April 2022.
2. "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. 16 April 2022. Retrieved 16 April 2022.
3. "List of Known Trans-Neptunian Objects". Johnston's Archive. 2 January 2022. Retrieved 16 April 2022.