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
2023-04-08 09:30:20 C 21 18 57.113 -07 10 31.15 V W68
2023-04-08 09:53:19 C 21 18 57.941 -07 10 59.12 V W68
2023-04-08 10:02:44 C 21 18 58.279 -07 11 10.82 V W68
2023-04-11 09:32:25 C 21 21 49.337 -08 35 55.21 V W68
2023-04-11 09:39:50 C 21 21 49.637 -08 36 03.74 V W68
2023-04-11 10:03:28 C 21 21 50.554 -08 36 31.21 V W68
2023-04-11 10:06:50 C 21 21 50.712 -08 36 34.96 V W68
2023-04-16 09:26:56 C 21 26 55.632 -10 50 41.39 V W68
2023-04-16 09:30:14 C 21 26 55.778 -10 50 44.84 V W68
2023-04-16 09:57:48 C 21 26 56.918 -10 51 15.16 V W68
2023-04-16 10:09:01 C 21 26 57.391 -10 51 27.50 V W68
2023-04-22 09:18:11 C 21 33 08.537 -13 24 32.69 V W68
2023-04-22 09:24:12 C 21 33 08.796 -13 24 38.88 V W68
2023-04-22 09:39:01 C 21 33 09.389 -13 24 54.58 V W68
2023-04-22 09:59:11 C 21 33 10.198 -13 25 15.92 V W68
2023-04-29 09:42:47 C 21 39 57.360 -16 20 35.38 V W68
2023-04-29 09:48:40 C 21 39 57.562 -16 20 41.53 V W68
2023-04-29 09:55:52 C 21 39 57.816 -16 20 49.09 V W68
2023-04-29 10:07:46 C 21 39 58.234 -16 21 01.76 V W68
2023-05-02 02:30:14 C 21 42 20.112 -17 28 34.14 V M22
2023-05-02 02:34:52 C 21 42 20.285 -17 28 39.00 V M22
2023-05-02 02:42:51 C 21 42 20.546 -17 28 47.39 V M22
2023-05-02 02:57:14 C 21 42 21.029 -17 29 02.76 V M22
2023-05-03 08:15:42 C 21 43 22.214 -18 00 00.47 V W68
2023-05-03 08:20:18 C 21 43 22.363 -18 00 05.36 V W68
2023-05-03 08:27:39 C 21 43 22.613 -18 00 13.25 V W68
2023-05-03 08:40:40 C 21 43 23.014 -18 00 27.50 V W68
2023-05-04 03:15:57 C 21 44 00.442 -18 20 10.79 V M22
2023-05-04 03:24:04 C 21 44 00.696 -18 20 19.39 V M22
2023-05-04 03:29:36 C 21 44 00.866 -18 20 25.37 V M22
2023-05-04 03:46:48 C 21 44 01.387 -18 20 43.80 V M22
2023-05-04 09:34:42 C 21 44 12.967 -18 26 54.13 V W68
2023-05-04 09:38:01 C 21 44 13.034 -18 26 57.77 V W68
2023-05-04 09:47:49 C 21 44 13.358 -18 27 08.03 V W68
2023-05-04 10:03:51 C 21 44 13.829 -18 27 25.31 V W68
2023-05-05 02:11:39 C 21 44 45.526 -18 44 36.42 V M22
2023-05-05 02:16:20 C 21 44 45.665 -18 44 41.24 V M22
2023-05-05 02:30:26 C 21 44 46.097 -18 44 56.54 V M22
2023-05-05 02:51:48 C 21 44 46.728 -18 45 19.51 V M22
2023-05-06 08:48:54 C 21 45 43.061 -19 17 27.35 V W68
2023-05-06 08:54:56 C 21 45 43.238 -19 17 33.90 V W68
2023-05-06 09:00:11 C 21 45 43.385 -19 17 39.62 V W68
2023-05-06 09:08:29 C 21 45 43.618 -19 17 48.59 V W68
2023-05-08 01:46:42 C 21 46 55.610 -20 01 46.96 V M22
2023-05-08 01:51:59 C 21 46 55.764 -20 01 52.79 V M22
2023-05-08 02:26:21 C 21 46 56.657 -20 02 30.70 V M22
2023-05-08 02:39:08 C 21 46 56.988 -20 02 44.70 V M22
2023-05-09 08:29:17 C 21 47 46.198 -20 35 23.10 V W68
2023-05-09 08:33:58 C 21 47 46.315 -20 35 28.36 V W68
2023-05-09 08:40:15 C 21 47 46.454 -20 35 35.38 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)