4953 (1990 MU)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6574752439 ± 6.44e-09
Semi-major axis (a)1.6214443779 AU ± 4.95e-10
Inclination (i)24.37896137° ± 7.77e-07
Long. of Asc. Node (Ω)77.52718564° ± 2.04e-06
Arg. of Perihelion (ω)77.92579270° ± 1.99e-06
Mean Anomaly (M)115.97675053° ± 1.07e-06
Mean Motion (n)0.4773744745°/day ± 2.19e-10
Perihelion dist (q)0.55538484 AU ± 1.04e-08
Aphelion dist (Q)2.68750392 AU ± 1.05e-08
Orbital Period2.06468158 yr ± 9.46e-10
Physical Parameters
H (abs. magnitude)14.88
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.179″
Uncertainty0
Orbit TypeApollo
MOID0.024785 AU
Observations Used2821
Radar Obs Used2
Gaia Obs Used92
Oppositions22
Arc Total1974-2025
First Observation Used1974-07-21
Last Observation Used2025-09-17
Observations (3883)
Date Type RA Dec Mag Band Observatory
2024-12-25 02:00:09 C 23 58 24.931 -21 10 43.03 V W68
2024-12-25 11:05:46 B 23 58 34.81 -21 01 31.7 q Q73
2024-12-25 11:10:56 B 23 58 34.90 -21 01 26.4 q Q73
2024-12-25 11:16:06 B 23 58 34.99 -21 01 21.0 q Q73
2024-12-26 01:29:32 C 23 58 51.341 -20 47 04.45 V 703
2024-12-26 01:32:58 C 23 58 51.388 -20 47 01.36 V 703
2024-12-26 01:36:24 C 23 58 51.442 -20 46 57.07 V 703
2024-12-26 01:38:50 C 23 58 51.240 -20 46 47.46 V W68
2024-12-26 01:39:49 C 23 58 51.503 -20 46 54.12 V 703
2024-12-26 01:43:05 C 23 58 51.305 -20 46 43.14 V W68
2024-12-26 01:50:54 C 23 58 51.442 -20 46 35.15 V W68
2024-12-26 02:06:39 C 23 58 51.749 -20 46 18.98 V W68
2024-12-27 18:50:43 C 23 59 41.712 -20 04 43.50 V M22
2024-12-27 18:55:15 C 23 59 41.789 -20 04 38.46 V M22
2024-12-27 19:04:23 C 23 59 41.976 -20 04 29.32 V M22
2024-12-27 19:30:36 C 23 59 42.492 -20 04 02.10 V M22
2024-12-29 00:56:30 C 00 00 22.152 -19 33 41.36 V W68
2024-12-29 01:05:45 C 00 00 22.320 -19 33 31.75 V W68
2024-12-29 01:21:02 C 00 00 22.656 -19 33 15.98 V W68
2024-12-31 01:32:49 C 00 01 33.906 -18 43 07.68 V 703
2024-12-31 01:36:16 C 00 01 33.985 -18 43 04.40 V 703
2024-12-31 01:39:44 C 00 01 34.075 -18 43 00.70 V 703
2024-12-31 01:43:12 C 00 01 34.133 -18 42 57.67 V 703
2024-12-31 19:50:41 C 00 02 02.573 -18 23 44.48 V M22
2024-12-31 19:55:17 C 00 02 02.638 -18 23 39.91 V M22
2024-12-31 20:03:16 C 00 02 02.866 -18 23 31.24 V M22
2024-12-31 20:54:14 C 00 02 04.219 -18 22 37.52 V M22
2025-01-06 01:26:38 C 00 05 48.067 -16 08 57.05 V W68
2025-01-06 01:31:14 C 00 05 48.206 -16 08 52.12 V W68
2025-01-06 01:42:21 C 00 05 48.588 -16 08 39.95 V W68
2025-01-06 01:58:19 C 00 05 49.051 -16 08 21.98 V W68
2025-01-07 18:59:34 C 00 07 12.550 -15 23 19.00 V M22
2025-01-07 19:04:09 C 00 07 12.701 -15 23 13.60 V M22
2025-01-07 19:11:59 C 00 07 12.960 -15 23 05.42 V M22
2025-01-07 19:27:16 C 00 07 13.483 -15 22 48.36 V M22
2025-01-09 04:56:17 C 00 08 25.056 -14 45 45.04 V T05
2025-01-09 05:05:27 C 00 08 25.399 -14 45 34.70 V T05
2025-01-09 05:21:52 C 00 08 25.973 -14 45 16.27 V T05
2025-01-09 05:35:07 C 00 08 26.412 -14 45 01.62 V T05
2025-01-12 01:53:55 C 00 11 01.129 -13 28 07.18 V 703
2025-01-12 01:57:15 C 00 11 01.381 -13 28 02.60 V 703
2025-01-12 02:00:34 C 00 11 01.435 -13 27 58.50 V 703
2025-01-12 02:03:54 C 00 11 01.543 -13 27 54.14 V 703
2025-01-13 05:08:54 C 00 12 05.993 -12 56 56.29 V T05
2025-01-13 05:14:10 C 00 12 06.235 -12 56 50.89 V T05
2025-01-13 05:27:20 C 00 12 06.650 -12 56 35.56 V T05
2025-01-13 05:41:45 C 00 12 07.234 -12 56 19.25 V T05
2025-01-15 05:35:12 C 00 14 05.515 -12 00 58.68 V T08
2025-01-15 05:47:09 C 00 14 05.986 -12 00 44.75 V T08
2025-01-15 06:15:45 C 00 14 07.162 -12 00 11.45 V T08
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1994-05-27 17:00:00 217197.3 5.5 Hz 8510 -14 -14
1994-05-27.708333 21719730 200 Hz 8510 253 253
1994-05-28 14:00:00 158792.8 5.5 Hz 8510 -14 -14
1994-05-28.583333 15879280 200 Hz 8510 253 253
Station codes
-14 DSS-14 Goldstone (70-m)