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
2023-06-14 06:55:49 C 21 37 16.656 -39 03 29.99 V W68
2023-06-14 07:05:14 C 21 37 16.001 -39 03 43.49 V W68
2023-06-14 07:32:40 C 21 37 14.150 -39 04 21.86 V W68
2023-06-22 22:17:42 C 21 20 35.791 -43 43 39.29 V M22
2023-06-22 22:21:46 C 21 20 35.395 -43 43 44.65 V M22
2023-06-22 22:30:11 C 21 20 34.567 -43 43 55.67 V M22
2023-06-22 23:13:53 C 21 20 30.230 -43 44 52.62 V M22
2023-07-01 21:56:26 C 20 56 35.220 -47 54 37.91 V M22
2023-07-01 22:01:20 C 20 56 34.586 -47 54 43.09 V M22
2023-07-01 22:08:46 C 20 56 33.638 -47 54 50.90 V M22
2023-07-01 22:23:10 C 20 56 31.812 -47 55 05.84 V M22
2023-07-11 00:41:03 C 20 27 20.035 -50 59 02.83 V M22
2023-07-11 00:45:42 C 20 27 19.378 -50 59 05.78 V M22
2023-07-11 00:54:01 C 20 27 18.180 -50 59 11.11 V M22
2023-07-11 01:08:12 C 20 27 16.152 -50 59 20.26 V M22
2023-07-11 01:08:52 C 20 27 16.068 -50 59 20.54 V M22
2023-07-11 01:16:52 C 20 27 14.918 -50 59 25.76 V M22
2023-07-11 01:31:34 C 20 27 12.818 -50 59 35.12 V M22
2023-07-14 00:18:47 C 20 17 19.490 -51 41 19.18 V M22
2023-07-14 00:22:45 C 20 17 18.926 -51 41 21.08 V M22
2023-07-14 01:09:55 C 20 17 12.175 -51 41 45.49 V M22
2023-07-14 01:19:26 C 20 17 10.810 -51 41 50.21 V M22
2023-07-16 23:14:50 C 20 07 28.956 -52 14 15.00 V M22
2023-07-16 23:19:37 C 20 07 28.291 -52 14 17.05 V M22
2023-07-16 23:27:05 C 20 07 27.218 -52 14 20.11 V M22
2023-07-16 23:41:23 C 20 07 25.212 -52 14 25.76 V M22
2023-07-22 23:21:45 C 19 48 21.250 -52 55 18.88 V M22
2023-07-22 23:26:20 C 19 48 20.635 -52 55 19.60 V M22
2023-07-23 00:17:07 C 19 48 14.054 -52 55 27.98 V M22
2023-07-23 00:38:58 C 19 48 11.210 -52 55 31.37 V M22
2023-08-05 03:44:08 C 19 14 43.238 -52 49 23.02 V W68
2023-08-05 03:49:25 C 19 14 42.778 -52 49 21.86 V W68
2023-08-05 03:59:17 C 19 14 41.926 -52 49 20.53 V W68
2023-08-05 03:59:56 C 19 14 41.916 -52 49 20.03 V W68
2023-08-05 04:47:55 C 19 14 37.716 -52 49 11.53 V W68
2023-08-09 23:16:30 C 19 06 02.086 -52 25 06.38 V M22
2023-08-09 23:21:06 C 19 06 01.798 -52 25 05.16 V M22
2023-08-10 00:18:20 C 19 05 57.866 -52 24 50.26 V M22
2023-08-10 00:37:49 C 19 05 56.537 -52 24 45.18 V M22
2023-08-11 03:26:56 C 19 04 13.337 -52 18 03.53 V W68
2023-08-11 03:31:33 C 19 04 13.032 -52 18 02.30 V W68
2023-08-11 03:39:26 C 19 04 12.533 -52 18 00.40 V W68
2023-08-11 03:55:54 C 19 04 11.434 -52 17 55.75 V W68
2023-08-15 21:01:56 C 18 58 02.825 -51 46 05.56 V M22
2023-08-15 21:06:49 C 18 58 02.616 -51 46 04.51 V M22
2023-08-15 21:14:40 C 18 58 02.208 -51 46 02.10 V M22
2023-08-15 21:28:47 C 18 58 01.488 -51 45 57.89 V M22
2023-08-23 02:51:39 C 18 51 55.723 -50 50 01.64 V W68
2023-08-23 02:56:59 C 18 51 55.577 -50 49 59.92 V W68
2023-08-23 03:05:38 C 18 51 55.342 -50 49 57.00 V W68
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)