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
2018-09-23 14:53:39 C 04 25 56.181 -13 37 59.98 U F52
2018-09-24 13:19:10 C 04 27 01.23 -13 50 01.5 U T05
2018-09-24 13:33:13 C 04 27 01.87 -13 50 09.0 U T05
2018-09-24 13:45:58 C 04 27 02.45 -13 50 16.2 U T05
2018-09-24 13:47:17 C 04 27 02.50 -13 50 16.7 U T05
2018-09-24 13:59:59 C 04 27 03.07 -13 50 23.9 U T05
2018-09-24 14:28:05 C 04 27 04.37 -13 50 39.0 U T05
2018-09-26 13:38:10 C 04 29 18.94 -14 16 55.9 U T08
2018-09-26 13:52:14 C 04 29 19.56 -14 17 03.5 U T08
2018-09-26 14:06:14 C 04 29 20.19 -14 17 11.8 U T08
2018-10-03 14:52:45 C 04 36 59.43 -16 02 46.5 U T05
2018-10-03 15:07:17 C 04 37 00.02 -16 02 56.4 U T05
2018-10-03 15:21:36 C 04 37 00.60 -16 03 06.0 U T05
2018-10-03 15:36:06 C 04 37 01.20 -16 03 15.4 U T05
2018-10-05 14:44:00 C 04 39 02.87 -16 36 20.1 U T08
2018-10-05 14:58:42 C 04 39 03.45 -16 36 30.5 U T08
2018-10-05 15:13:20 C 04 39 04.03 -16 36 40.7 U T08
2018-10-05 15:28:04 C 04 39 04.69 -16 36 51.2 U T08
2018-10-06 15:16:13 C 04 40 04.80 -16 54 13.2 U T05
2018-10-06 15:21:35 C 04 40 05.01 -16 54 17.1 U T05
2018-10-06 15:31:35 C 04 40 05.40 -16 54 24.3 U T05
2018-10-06 15:36:53 C 04 40 05.61 -16 54 28.5 U T05
2018-10-10 09:47:02 C 04 43 46.33 -18 04 31.2 V 703
2018-10-10 09:54:38 C 04 43 46.61 -18 04 37.2 V 703
2018-10-10 10:02:16 C 04 43 46.89 -18 04 43.7 V 703
2018-10-10 10:09:53 C 04 43 47.16 -18 04 49.9 V 703
2018-10-10 12:25:26 C 04 43 52.71 -18 06 38.6 U T05
2018-10-10 12:36:44 C 04 43 53.11 -18 06 47.8 U T05
2018-10-10 12:48:05 C 04 43 53.52 -18 06 57.2 U T05
2018-10-10 12:59:20 C 04 43 53.92 -18 07 06.5 U T05
2018-10-10 22:30:02 C 04 44 16.53 -18 14 59.2 o C41
2018-10-10 22:36:10 C 04 44 16.75 -18 15 04.3 o C41
2018-10-12 14:51:10 C 04 45 49.67 -18 49 04.8 U T08
2018-10-12 15:05:09 C 04 45 50.15 -18 49 16.8 U T08
2018-10-12 15:20:32 C 04 45 50.68 -18 49 30.0 U T08
2018-10-12 15:35:15 C 04 45 51.19 -18 49 42.7 U T08
2018-10-14 14:40:20 C 04 47 37.48 -19 31 38.6 U T05
2018-10-14 14:55:02 C 04 47 37.97 -19 31 52.0 U T05
2018-10-14 15:09:01 C 04 47 38.43 -19 32 04.8 U T05
2018-10-14 15:23:43 C 04 47 38.92 -19 32 18.0 U T05
2018-10-18 08:59:12 C 04 50 51.85 -20 58 57.0 V 703
2018-10-18 09:06:31 C 04 50 52.11 -20 59 05.5 V 703
2018-10-18 09:13:51 C 04 50 52.33 -20 59 12.8 V 703
2018-10-18 09:21:10 C 04 50 52.54 -20 59 20.4 V 703
2018-10-18 13:53:41 C 04 51 01.59 -21 03 57.9 U T05
2018-10-18 14:08:26 C 04 51 02.04 -21 04 13.1 U T05
2018-10-18 14:22:27 C 04 51 02.46 -21 04 27.4 U T05
2018-10-18 14:37:08 C 04 51 02.89 -21 04 42.1 U T05
2018-10-22 12:24:10 C 04 54 10.42 -22 47 24.8 U T05
2018-10-22 12:35:22 C 04 54 10.73 -22 47 37.9 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)