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
2022-12-05 02:40:21 C 00 09 56.911 -28 11 19.50 V W68
2022-12-05 03:01:41 C 00 09 55.812 -28 10 57.90 V W68
2022-12-06 18:50:10 C 00 08 03.931 -27 30 38.59 V M22
2022-12-06 18:57:39 C 00 08 03.574 -27 30 31.07 V M22
2022-12-06 19:02:20 C 00 08 03.362 -27 30 25.74 V M22
2022-12-06 19:16:51 C 00 08 02.681 -27 30 11.02 V M22
2022-12-08 02:08:35 C 00 06 42.170 -26 58 08.76 V W68
2022-12-08 02:10:31 C 00 06 42.103 -26 58 06.46 V W68
2022-12-08 02:13:07 C 00 06 41.966 -26 58 03.61 V W68
2022-12-08 02:15:04 C 00 06 41.866 -26 58 01.85 V W68
2022-12-08 02:22:54 C 00 06 41.506 -26 57 53.42 V W68
2022-12-08 02:33:20 C 00 06 41.105 -26 57 42.12 V W68
2022-12-08 02:38:36 C 00 06 40.853 -26 57 36.72 V W68
2022-12-08 02:41:12 C 00 06 40.747 -26 57 33.91 V W68
2022-12-09 01:01:53 C 00 05 46.332 -26 33 58.82 V W68
2022-12-09 01:09:36 C 00 05 46.001 -26 33 50.62 V W68
2022-12-09 01:21:47 C 00 05 45.475 -26 33 37.91 V W68
2022-12-09 01:26:21 C 00 05 45.286 -26 33 32.69 V W68
2022-12-09 19:00:14 C 00 05 04.433 -26 14 45.74 V M22
2022-12-09 19:04:49 C 00 05 04.246 -26 14 40.92 V M22
2022-12-09 19:13:20 C 00 05 03.898 -26 14 31.60 V M22
2022-12-09 19:49:51 C 00 05 02.431 -26 13 52.10 V M22
2022-12-12 00:53:43 C 00 03 09.679 -25 15 57.28 V W68
2022-12-12 00:59:35 C 00 03 09.478 -25 15 50.72 V W68
2022-12-12 01:09:03 C 00 03 09.137 -25 15 40.07 V W68
2022-12-12 01:27:11 C 00 03 08.501 -25 15 20.05 V W68
2022-12-13 02:26:00 C 00 02 20.587 -24 47 27.96 V W68
2022-12-13 02:30:34 C 00 02 20.429 -24 47 22.78 V W68
2022-12-13 02:39:48 C 00 02 20.138 -24 47 12.26 V W68
2022-12-13 02:54:11 C 00 02 19.666 -24 46 55.92 V W68
2022-12-13 20:23:27 C 00 01 48.264 -24 27 12.49 V M22
2022-12-13 20:28:39 C 00 01 48.096 -24 27 06.70 V M22
2022-12-13 20:38:30 C 00 01 47.798 -24 26 55.43 V M22
2022-12-13 20:59:32 C 00 01 47.146 -24 26 31.45 V M22
2022-12-14 18:54:25 C 00 01 10.253 -24 01 34.79 V M22
2022-12-14 18:59:39 C 00 01 10.114 -24 01 28.70 V M22
2022-12-14 19:08:18 C 00 01 09.847 -24 01 18.55 V M22
2022-12-14 19:38:33 C 00 01 08.966 -24 00 43.70 V M22
2022-12-16 01:34:25 C 00 00 22.270 -23 26 11.80 V W68
2022-12-16 01:39:37 C 00 00 22.123 -23 26 05.71 V W68
2022-12-16 01:48:05 C 00 00 21.907 -23 25 55.78 V W68
2022-12-16 02:09:38 C 00 00 21.326 -23 25 30.54 V W68
2022-12-21 02:21:17 C 23 57 56.364 -21 02 00.06 V W68
2022-12-21 02:25:55 C 23 57 56.297 -21 01 54.12 V W68
2022-12-21 02:33:50 C 23 57 56.158 -21 01 44.51 V W68
2022-12-21 02:53:03 C 23 57 55.824 -21 01 20.71 V W68
2022-12-21 20:23:41 C 23 57 40.066 -20 39 49.07 V M22
2022-12-21 20:24:20 C 23 57 40.056 -20 39 48.31 V M22
2022-12-21 20:28:16 C 23 57 39.982 -20 39 43.27 V M22
2022-12-21 20:28:55 C 23 57 39.982 -20 39 42.59 V M22
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)