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
2024-09-22 22:58:48 C 02 00 04.752 -31 41 55.72 V M22
2024-09-22 23:06:43 C 02 00 04.289 -31 42 01.26 V M22
2024-09-26 22:12:00 C 01 54 22.087 -32 45 48.20 V M22
2024-09-26 22:15:17 C 01 54 21.854 -32 45 50.51 V M22
2024-09-26 22:22:43 C 01 54 21.353 -32 45 55.08 V M22
2024-09-26 22:44:46 C 01 54 19.913 -32 46 10.02 V M22
2024-09-28 06:43:46 C 01 52 13.594 -33 06 46.76 V W68
2024-09-28 06:48:22 C 01 52 13.294 -33 06 49.68 V W68
2024-09-28 06:56:15 C 01 52 12.734 -33 06 54.68 V W68
2024-09-28 07:10:48 C 01 52 11.758 -33 07 03.86 V W68
2024-09-29 04:42:07 C 01 50 44.129 -33 20 38.22 V W68
2024-09-29 04:47:02 C 01 50 43.778 -33 20 41.24 V W68
2024-09-29 04:54:16 C 01 50 43.282 -33 20 45.82 V W68
2024-09-29 05:02:57 C 01 50 42.667 -33 20 51.14 V W68
2024-09-29 10:25:00 C 01 50 20.416 -33 24 17.15 X F51
2024-09-29 10:39:04 C 01 50 19.409 -33 24 25.97 X F51
2024-09-29 10:53:05 C 01 50 18.403 -33 24 34.73 X F51
2024-09-29 11:07:06 C 01 50 17.395 -33 24 43.49 X F51
2024-10-02 04:38:27 C 01 45 33.391 -34 04 02.82 V W68
2024-10-02 04:43:16 C 01 45 33.012 -34 04 05.70 V W68
2024-10-02 04:47:16 C 01 45 32.695 -34 04 08.18 V W68
2024-10-02 05:03:08 C 01 45 31.500 -34 04 17.51 V W68
2024-10-03 03:41:44 C 01 43 48.574 -34 17 14.21 V W68
2024-10-03 03:45:46 C 01 43 48.293 -34 17 16.66 V W68
2024-10-03 03:51:10 C 01 43 47.846 -34 17 20.04 V W68
2024-10-03 04:41:56 C 01 43 43.841 -34 17 48.73 V W68
2024-10-03 22:25:03 C 01 42 21.485 -34 27 40.64 V M22
2024-10-03 22:27:39 C 01 42 21.276 -34 27 41.94 V M22
2024-10-03 22:32:28 C 01 42 20.892 -34 27 44.64 V M22
2024-10-03 23:22:57 C 01 42 16.831 -34 28 12.58 V M22
2024-10-04 22:21:12 C 01 40 27.970 -34 40 37.56 V M22
2024-10-04 22:24:28 C 01 40 27.710 -34 40 39.14 V M22
2024-10-04 22:29:02 C 01 40 27.336 -34 40 41.56 V M22
2024-10-04 22:38:25 C 01 40 26.546 -34 40 46.67 V M22
2024-10-07 20:33:30 C 01 34 41.333 -35 15 51.37 V M22
2024-10-07 20:37:27 C 01 34 40.978 -35 15 53.32 V M22
2024-10-07 20:40:42 C 01 34 40.706 -35 15 55.30 V M22
2024-10-07 20:42:42 C 01 34 40.514 -35 15 55.80 V M22
2024-10-07 20:44:00 C 01 34 40.409 -35 15 56.30 V M22
2024-10-07 20:48:35 C 01 34 40.013 -35 15 58.75 V M22
2024-10-07 21:00:05 C 01 34 39.010 -35 16 04.19 V M22
2024-10-07 21:07:15 C 01 34 38.388 -35 16 07.46 V M22
2024-10-08 22:08:49 C 01 32 29.974 -35 27 37.15 V M22
2024-10-08 22:53:31 C 01 32 26.033 -35 27 57.13 V M22
2024-10-08 22:57:55 C 01 32 25.632 -35 27 59.15 V M22
2024-10-10 02:16:31 C 01 30 03.382 -35 39 48.28 V W68
2024-10-10 02:21:09 C 01 30 02.974 -35 39 49.93 V W68
2024-10-10 02:29:03 C 01 30 02.282 -35 39 53.39 V W68
2024-10-10 03:16:55 C 01 29 57.979 -35 40 13.62 V W68
2024-10-11 03:47:21 C 01 27 47.849 -35 50 10.90 V W68
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)