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
2020-10-07 11:49:27 C 03 19 29.59 -26 24 02.9 V T05
2020-10-07 11:52:05 C 03 19 29.47 -26 24 05.2 V T05
2020-10-07 11:56:46 C 03 19 29.28 -26 24 09.4 V T05
2020-10-07 12:12:47 C 03 19 28.57 -26 24 23.7 V T05
2020-10-09 11:39:16 C 03 17 22.29 -27 06 47.2 V T08
2020-10-09 11:43:54 C 03 17 22.06 -27 06 51.4 V T08
2020-10-09 11:47:53 C 03 17 21.87 -27 06 54.8 V T08
2020-10-09 11:55:51 C 03 17 21.46 -27 07 02.2 V T08
2020-10-10 02:44:23 C 03 16 38.57 -27 20 10.9 q 834
2020-10-10 03:26:28 C 03 16 36.49 -27 20 49.2 q 834
2020-10-10 10:09:43 C 03 16 15.62 -27 27 02.8 V 703
2020-10-10 10:25:09 C 03 16 14.80 -27 27 17.4 V 703
2020-10-10 10:32:52 C 03 16 14.38 -27 27 24.8 V 703
2020-10-11 11:42:16 C 03 14 55.50 -27 50 06.1 V T05
2020-10-11 11:44:58 C 03 14 55.34 -27 50 08.6 V T05
2020-10-11 12:20:18 C 03 14 53.31 -27 50 40.6 V T05
2020-10-11 13:01:02 C 03 14 50.95 -27 51 17.3 V T05
2020-10-12 09:19:05 C 03 13 42.91 -28 09 41.0 V 703
2020-10-12 09:26:43 C 03 13 42.34 -28 09 47.8 V 703
2020-10-12 09:41:58 C 03 13 41.22 -28 10 00.4 V 703
2020-10-13 11:11:14 C 03 12 10.95 -28 33 05.0 V T08
2020-10-13 11:13:53 C 03 12 10.78 -28 33 07.5 V T08
2020-10-13 11:17:52 C 03 12 10.52 -28 33 11.1 V T08
2020-10-13 11:25:09 C 03 12 10.04 -28 33 17.3 V T08
2020-10-15 08:33:18 C 03 09 14.49 -29 14 08.5 V 703
2020-10-15 08:40:50 C 03 09 13.94 -29 14 15.6 V 703
2020-10-15 08:48:23 C 03 09 13.41 -29 14 22.5 V 703
2020-10-15 08:55:55 C 03 09 12.87 -29 14 29.0 V 703
2020-10-15 11:05:38 C 03 09 04.16 -29 16 24.6 V T05
2020-10-15 11:13:33 C 03 09 03.59 -29 16 31.9 V T05
2020-10-15 11:16:11 C 03 09 03.40 -29 16 34.3 V T05
2020-10-15 11:24:45 C 03 09 02.78 -29 16 42.0 V T05
2020-10-17 10:57:51 C 03 05 35.87 -29 59 24.1 V T08
2020-10-17 11:02:30 C 03 05 35.51 -29 59 28.4 V T08
2020-10-17 11:10:27 C 03 05 34.86 -29 59 35.4 V T08
2020-10-17 11:17:47 C 03 05 34.28 -29 59 41.9 V T08
2020-10-18 19:24:12 S 03 02 24.226 -30 27 58.39 V C57
2020-10-18 19:24:12 s 1 -210917.65 1 +159093.65 9090.0 C57
2020-10-18 22:14:12 S 03 02 11.544 -30 30 18.07 V C57
2020-10-18 22:14:12 s 1 -210590.50 5 +146801.71 1000.0 C57
2020-10-18 22:24:12 S 03 02 10.810 -30 30 26.32 V C57
2020-10-18 22:24:12 s 1 -210555.63 5 +146067.50 7980.0 C57
2020-10-18 22:34:12 S 03 02 10.068 -30 30 36.40 V C57
2020-10-18 22:34:12 s 1 -210518.97 3 +145332.05 3660.0 C57
2020-10-18 22:44:12 S 03 02 09.276 -30 30 42.44 V C57
2020-10-18 22:44:12 s 1 -210480.51 1 +144595.36 8030.0 C57
2020-10-18 22:54:12 S 03 02 08.491 -30 30 52.81 V C57
2020-10-18 22:54:12 s 1 -210440.23 9 +143857.43 1100.0 C57
2020-10-18 23:04:12 S 03 02 07.730 -30 31 01.45 V C57
2020-10-18 23:04:12 s 1 -210398.14 8 +143118.25 2840.0 C57
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)