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
2025-02-16 02:25:07 C 00 54 12.272 +05 04 37.02 V 703
2025-02-16 02:28:24 C 00 54 12.416 +05 04 42.67 V 703
2025-02-16 02:31:42 C 00 54 12.661 +05 04 47.46 V 703
2025-02-16 18:06:18 C 00 55 06.060 +05 29 11.54 Z C23
2025-02-16 18:58:13 C 00 55 08.950 +05 30 33.73 Z C23
2025-02-16 19:25:35 C 00 55 10.498 +05 31 16.79 Z C23
2025-02-17 18:10:28 C 00 56 27.972 +06 07 18.95 Z C23
2025-02-17 18:30:47 C 00 56 29.066 +06 07 52.90 Z C23
2025-02-18 18:18:12 C 00 57 49.483 +06 45 56.16 Z C23
2025-02-18 18:50:21 C 00 57 51.235 +06 46 48.61 Z C23
2025-02-28 18:25:57 C 01 10 05.429 +13 33 23.00 Z C23
2025-02-28 18:32:26 C 01 10 05.662 +13 33 33.23 Z C23
2025-02-28 18:49:56 C 01 10 06.413 +13 34 03.97 Z C23
2025-03-02 18:27:12 C 01 12 02.614 +14 59 31.52 Z C23
2025-03-02 19:06:44 C 01 12 04.109 +15 00 42.88 Z C23
2025-03-04 18:36:30 C 01 13 43.440 +16 27 09.94 Z C23
2025-03-04 19:08:04 C 01 13 44.369 +16 28 08.18 Z C23
2025-03-04 19:10:13 C 01 13 44.429 +16 28 11.96 Z C23
2025-03-07 18:41:40 C 01 15 34.123 +18 39 59.62 Z C23
2025-03-07 18:56:18 C 01 15 34.411 +18 40 26.22 Z C23
2025-03-07 19:19:05 C 01 15 34.858 +18 41 07.73 Z C23
2025-03-10 18:39:29 C 01 16 22.529 +20 53 08.77 Z C23
2025-03-10 18:51:33 C 01 16 22.560 +20 53 30.05 Z C23
2025-03-10 19:09:07 C 01 16 22.589 +20 54 02.20 Z C23
2025-03-15 19:13:09 C 01 14 32.993 +24 30 43.92 Z C23
2025-03-15 19:21:05 C 01 14 32.669 +24 30 57.74 Z C23
2025-03-16 18:56:01 C 01 13 36.674 +25 11 34.40 Z C23
2025-03-16 18:58:56 C 01 13 36.569 +25 11 40.88 Z C23
2025-03-16 19:02:23 C 01 13 36.353 +25 11 46.50 Z C23
2025-03-17 18:48:08 C 01 12 26.563 +25 51 41.76 Z C23
2025-03-17 18:51:35 C 01 12 26.407 +25 51 49.07 Z C23
2025-03-17 18:54:30 C 01 12 26.225 +25 51 53.06 Z C23
2025-03-18 18:56:40 C 01 11 01.466 +26 31 02.78 Z C23
2025-03-18 18:59:34 C 01 11 01.250 +26 31 07.18 Z C23
2025-03-18 19:01:52 C 01 11 01.142 +26 31 11.89 Z C23
2025-05-06 03:08:35 C 22 23 10.462 +01 31 04.80 V M22
2025-05-06 03:16:21 C 22 23 09.857 +01 30 42.08 V M22
2025-05-06 03:38:49 C 22 23 08.107 +01 29 36.64 V M22
2025-05-06 03:45:23 C 22 23 07.601 +01 29 17.59 V M22
2025-05-09 14:01:11 C 22 17 14.866 -02 31 23.45 V T05
2025-05-09 14:09:46 C 22 17 14.244 -02 31 48.29 V T05
2025-05-09 14:27:39 C 22 17 12.912 -02 32 41.17 V T05
2025-05-09 14:29:37 C 22 17 12.766 -02 32 46.50 V T05
2025-05-09 14:35:34 C 22 17 12.314 -02 33 04.00 V T05
2025-05-09 14:41:32 C 22 17 11.882 -02 33 21.56 V T05
2025-05-09 14:51:29 C 22 17 11.131 -02 33 50.62 V T05
2025-05-11 14:06:02 C 22 13 52.874 -04 52 23.66 V T08
2025-05-11 14:15:18 C 22 13 52.183 -04 52 50.88 V T08
2025-05-11 14:41:47 C 22 13 50.210 -04 54 08.78 V T08
2025-05-11 14:53:49 C 22 13 49.308 -04 54 44.10 V T08
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)