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
2020-10-26 00:04:11 S 02 45 49.174 -32 58 20.32 V C57
2020-10-26 00:04:11 s 1 +93032.777 0 +357088.65 4920.0 C57
2020-10-31 01:29:23 C 02 31 32.12 -34 19 05.8 q 834
2020-10-31 01:58:54 C 02 31 28.07 -34 19 24.5 q 834
2020-11-04 09:17:27 C 02 16 50.00 -35 17 16.3 V T05
2020-11-04 09:20:05 C 02 16 49.60 -35 17 17.6 V T05
2020-11-04 09:26:02 C 02 16 48.68 -35 17 20.4 V T05
2020-11-04 09:40:35 C 02 16 46.42 -35 17 27.2 V T05
2020-11-08 10:10:44 C 02 01 36.14 -35 53 59.4 V T05
2020-11-08 10:16:00 C 02 01 35.25 -35 54 00.7 V T05
2020-11-08 10:23:54 C 02 01 33.91 -35 54 02.8 V T05
2020-11-08 10:41:02 C 02 01 31.02 -35 54 07.4 V T05
2020-11-09 16:55:25 C 01 56 29.75 -36 01 16.5 q Q68
2020-11-09 16:57:37 C 01 56 29.39 -36 01 17.0 q Q68
2020-11-09 16:59:48 C 01 56 29.00 -36 01 17.2 q Q68
2020-11-09 17:01:58 C 01 56 28.63 -36 01 17.6 q Q68
2020-11-10 09:46:06 C 01 53 40.08 -36 04 46.7 V T08
2020-11-10 09:50:44 C 01 53 39.29 -36 04 47.4 V T08
2020-11-10 10:00:02 C 01 53 37.67 -36 04 49.0 V T08
2020-11-10 10:48:58 C 01 53 29.12 -36 04 56.9 V T08
2020-11-10 14:39:26 C 01 52 50.02 -36 05 22.3 q Q68
2020-11-10 14:41:37 C 01 52 49.61 -36 05 22.7 q Q68
2020-11-10 14:43:49 C 01 52 49.24 -36 05 23.0 q Q68
2020-11-10 14:46:01 C 01 52 48.86 -36 05 23.5 q Q68
2020-11-10 15:18:19 C 01 52 43.24 -36 05 28.0 q Q68
2020-11-10 15:20:34 C 01 52 42.86 -36 05 28.1 q Q68
2020-11-10 15:22:45 C 01 52 42.49 -36 05 28.7 q Q68
2020-11-10 15:24:58 C 01 52 42.10 -36 05 28.9 q Q68
2020-11-11 15:47:13 C 01 48 31.41 -36 08 38.9 q Q68
2020-11-11 15:49:26 C 01 48 31.00 -36 08 39.1 q Q68
2020-11-11 15:51:40 C 01 48 30.56 -36 08 39.2 q Q68
2020-11-11 15:53:53 C 01 48 30.23 -36 08 38.4 q Q68
2020-11-13 16:06:26 C 01 40 04.55 -36 10 39.3 q Q68
2020-11-13 16:08:37 C 01 40 04.16 -36 10 39.1 q Q68
2020-11-13 16:10:49 C 01 40 03.76 -36 10 38.8 q Q68
2020-11-13 16:13:00 C 01 40 03.37 -36 10 38.7 q Q68
2020-11-14 13:48:15 C 01 36 13.89 -36 09 41.8 q Q68
2020-11-14 13:50:26 C 01 36 13.47 -36 09 41.6 q Q68
2020-11-14 13:52:38 C 01 36 13.10 -36 09 41.3 q Q68
2020-11-14 13:54:48 C 01 36 12.64 -36 09 40.9 q Q68
2020-11-16 08:24:18 C 01 28 35.35 -36 04 24.0 V T05
2020-11-16 08:29:35 C 01 28 34.37 -36 04 23.1 V T05
2020-11-16 08:38:48 C 01 28 32.65 -36 04 21.3 V T05
2020-11-16 08:55:17 C 01 28 29.58 -36 04 18.0 V T05
2020-11-20 07:49:02 C 01 11 13.18 -35 34 29.9 V T05
2020-11-20 07:58:58 C 01 11 11.30 -35 34 25.5 V T05
2020-11-20 08:04:55 C 01 11 10.18 -35 34 22.7 V T05
2020-11-20 08:31:22 C 01 11 05.20 -35 34 10.8 V T05
2020-11-20 14:30:33 C 01 09 58.99 -35 31 12.2 q Q68
2020-11-20 14:32:44 C 01 09 58.58 -35 31 11.1 q Q68
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)