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
2018-10-22 12:43:17 C 04 54 10.94 -22 47 47.2 U T05
2018-10-22 12:59:02 C 04 54 11.37 -22 48 05.6 U T05
2018-10-23 13:30:01 C 04 54 57.825 -23 17 13.97 U F52
2018-10-23 14:02:23 C 04 54 58.671 -23 17 53.07 U F52
2018-10-23 14:18:32 C 04 54 59.097 -23 18 12.48 U F52
2018-10-26 11:57:52 C 04 57 08.05 -24 46 51.3 q Q67
2018-10-26 13:13:50 C 04 57 10.11 -24 48 35.9 q Q67
2018-10-26 13:34:13 C 04 57 10.13 -24 49 04.1 q E89
2018-10-26 13:40:01 C 04 57 10.28 -24 49 11.9 q E89
2018-10-26 13:45:13 C 04 57 10.41 -24 49 19.0 q E89
2018-10-26 13:50:24 C 04 57 10.53 -24 49 25.9 q E89
2018-10-26 13:55:18 C 04 57 10.09 -24 49 50.6 U T05
2018-10-26 13:55:36 C 04 57 10.66 -24 49 33.1 q E89
2018-10-26 14:09:17 C 04 57 10.43 -24 50 09.5 U T05
2018-10-26 14:23:14 C 04 57 10.77 -24 50 28.1 U T05
2018-10-26 14:36:16 C 04 57 12.21 -24 50 28.6 q Q67
2018-10-26 14:37:14 C 04 57 11.11 -24 50 47.0 U T05
2018-10-26 15:53:40 C 04 57 14.13 -24 52 14.1 q Q67
2018-10-26 17:10:12 C 04 57 16.00 -24 53 58.7 q Q67
2018-10-26 18:19:48 C 04 57 17.72 -24 55 33.0 q Q67
2018-10-27 14:09:08 C 04 57 53.73 -25 22 59.1 q Q67
2018-10-27 15:26:34 C 04 57 55.67 -25 24 49.4 q Q67
2018-11-01 14:14:01 C 05 01 11.70 -28 32 05.2 U T08
2018-11-01 14:30:28 C 05 01 12.03 -28 32 33.8 U T08
2018-11-01 14:45:54 C 05 01 12.34 -28 33 00.6 U T08
2018-11-01 14:59:59 C 05 01 12.62 -28 33 25.2 U T08
2018-11-02 08:16:57 C 05 01 41.31 -29 04 32.1 V 703
2018-11-02 08:24:10 C 05 01 41.44 -29 04 45.3 V 703
2018-11-02 08:31:22 C 05 01 41.60 -29 04 58.7 V 703
2018-11-02 08:38:36 C 05 01 41.73 -29 05 11.9 V 703
2018-11-05 13:43:14 C 05 03 38.89 -31 39 06.6 U T08
2018-11-05 13:48:34 C 05 03 38.99 -31 39 18.3 U T08
2018-11-05 13:57:54 C 05 03 39.16 -31 39 38.4 U T08
2018-11-05 14:03:21 C 05 03 39.24 -31 39 50.2 U T08
2018-11-05 14:13:21 C 05 03 39.43 -31 40 11.8 U T08
2018-11-05 14:18:44 C 05 03 39.51 -31 40 23.6 U T08
2018-11-05 14:28:10 C 05 03 39.68 -31 40 43.8 U T08
2018-11-05 14:33:31 C 05 03 39.78 -31 40 55.4 U T08
2018-11-06 13:38:59 C 05 04 15.80 -32 32 33.5 q E94
2018-11-06 14:00:23 C 05 04 16.22 -32 33 23.3 q E94
2018-11-06 14:22:51 C 05 04 16.57 -32 34 15.3 q E94
2018-11-09 13:21:19 C 05 06 03.83 -35 36 32.8 U T08
2018-11-09 13:35:20 C 05 06 04.07 -35 37 12.0 U T08
2018-11-09 13:50:45 C 05 06 04.31 -35 37 55.6 U T08
2018-11-09 14:04:50 C 05 06 04.55 -35 38 35.3 U T08
2018-11-13 13:04:35 C 05 08 44.46 -40 53 52.2 U T08
2018-11-13 13:18:35 C 05 08 44.71 -40 54 46.3 U T08
2018-11-13 13:32:34 C 05 08 44.97 -40 55 40.4 U T08
2018-11-13 13:46:33 C 05 08 45.24 -40 56 34.3 U T08
2018-11-15 12:48:30 C 05 10 22.95 -44 17 32.9 U T05
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)