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
2020-11-20 14:34:56 C 01 09 58.17 -35 31 10.2 q Q68
2020-11-20 14:37:09 C 01 09 57.76 -35 31 09.1 q Q68
2020-11-22 01:27:38 C 01 03 36.65 -35 13 31.7 q 834
2020-11-22 02:11:48 C 01 03 28.38 -35 13 06.4 q 834
2020-11-26 02:44:33 S 00 45 59.67 -34 07 05.7 L C51
2020-11-26 04:18:48 S 00 45 42.79 -34 05 49.1 L C51
2020-11-26 05:52:52 S 00 45 25.94 -34 04 32.1 L C51
2020-11-26 07:20:34 C 00 45 09.99 -34 03 34.1 V T08
2020-11-26 07:23:53 C 00 45 09.37 -34 03 31.4 V T08
2020-11-26 07:24:33 C 00 45 09.23 -34 03 30.8 V T08
2020-11-26 07:27:08 S 00 45 09.07 -34 03 15.1 L C51
2020-11-26 08:26:21 C 00 44 57.82 -34 02 39.0 V T08
2020-11-26 08:28:25 C 00 44 57.42 -34 02 37.5 V T08
2020-11-26 09:01:11 S 00 44 52.20 -34 01 57.4 L C51
2020-11-26 10:35:26 S 00 44 35.35 -34 00 39.5 L C51
2020-11-26 13:43:45 S 00 44 01.666 -33 58 02.28 L C51
2020-11-28 07:36:45 C 00 36 34.95 -33 20 56.4 V T05
2020-11-28 07:43:22 C 00 36 33.76 -33 20 50.0 V T05
2020-11-28 08:40:58 C 00 36 23.28 -33 19 54.4 V T05
2020-11-28 08:50:20 C 00 36 21.57 -33 19 45.6 V T05
2020-12-02 06:56:54 C 00 20 03.39 -31 39 59.6 V T05
2020-12-02 07:02:11 C 00 20 02.46 -31 39 53.3 V T05
2020-12-02 07:13:23 C 00 20 00.49 -31 39 40.1 V T05
2020-12-02 07:28:37 C 00 19 57.82 -31 39 22.0 V T05
2020-12-04 06:37:49 C 00 12 01.58 -30 41 37.4 V T08
2020-12-04 06:45:07 C 00 12 00.29 -30 41 27.9 V T08
2020-12-04 06:49:45 C 00 11 59.50 -30 41 21.8 V T08
2020-12-04 06:51:05 C 00 11 59.26 -30 41 20.0 V T08
2020-12-04 06:57:43 C 00 11 58.13 -30 41 11.5 V T08
2020-12-04 07:07:00 C 00 11 56.52 -30 40 59.5 V T08
2020-12-04 07:13:38 C 00 11 55.39 -30 40 50.9 V T08
2020-12-06 06:05:15 C 00 04 11.69 -29 38 38.2 V T05
2020-12-06 06:09:53 C 00 04 10.90 -29 38 31.8 V T05
2020-12-06 06:20:28 C 00 04 09.12 -29 38 17.3 V T05
2020-12-06 06:38:57 C 00 04 05.98 -29 37 51.5 V T05
2020-12-07 02:50:13 C 00 00 49.18 -29 09 39.6 V 703
2020-12-07 02:57:49 C 00 00 47.96 -29 09 28.2 V 703
2020-12-07 03:05:25 C 00 00 46.64 -29 09 18.6 V 703
2020-12-07 03:13:01 C 00 00 45.38 -29 09 07.6 V 703
2020-12-07 11:16:47 C 23 59 26.71 -28 57 17.0 q Q68
2020-12-07 11:19:00 C 23 59 26.35 -28 57 13.6 q Q68
2020-12-07 11:21:13 C 23 59 25.97 -28 57 10.6 q Q68
2020-12-07 11:23:26 C 23 59 25.61 -28 57 07.3 q Q68
2020-12-07 12:40:57 C 23 59 12.89 -28 55 14.8 q Q68
2020-12-07 12:43:10 C 23 59 12.43 -28 55 10.7 q Q68
2020-12-07 12:45:23 C 23 59 12.11 -28 55 07.7 q Q68
2020-12-08 06:05:32 C 23 56 25.50 -28 30 12.5 V T08
2020-12-08 06:10:11 C 23 56 24.73 -28 30 05.6 V T08
2020-12-08 06:18:48 C 23 56 23.30 -28 29 52.8 V T08
2020-12-08 06:33:23 C 23 56 20.87 -28 29 31.2 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)