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
2022-12-21 20:36:14 C 23 57 39.871 -20 39 33.16 V M22
2022-12-21 20:37:33 C 23 57 39.842 -20 39 31.75 V M22
2022-12-21 20:57:58 C 23 57 39.523 -20 39 06.16 V M22
2022-12-21 20:58:37 C 23 57 39.521 -20 39 05.58 V M22
2022-12-22 02:01:56 C 23 57 35.647 -20 33 02.88 V 703
2022-12-22 02:10:09 C 23 57 35.514 -20 32 52.58 V 703
2022-12-22 02:20:21 C 23 57 35.345 -20 32 39.98 V 703
2022-12-22 02:28:34 C 23 57 35.212 -20 32 29.65 V 703
2022-12-22 18:54:02 C 23 57 21.749 -20 11 56.04 V M22
2022-12-22 18:59:35 C 23 57 21.653 -20 11 49.16 V M22
2022-12-22 19:07:32 C 23 57 21.533 -20 11 39.26 V M22
2022-12-22 19:23:07 C 23 57 21.290 -20 11 19.82 V M22
2022-12-24 01:38:56 C 23 56 59.551 -19 33 25.34 V W68
2022-12-24 01:57:46 C 23 56 59.314 -19 33 01.48 V W68
2022-12-24 02:02:19 C 23 56 59.244 -19 32 55.72 V W68
2022-12-24 02:10:07 C 23 56 59.148 -19 32 45.78 V W68
2022-12-26 12:31:45 B 23 56 27.206 -18 18 34.50 W N86
2022-12-26 12:35:39 B 23 56 27.111 -18 18 29.70 W N86
2022-12-26 12:43:14 B 23 56 27.084 -18 18 19.88 W N86
2022-12-26 12:47:05 B 23 56 27.005 -18 18 14.40 W N86
2022-12-26 12:54:48 B 23 56 26.983 -18 18 04.87 W N86
2022-12-26 12:58:37 B 23 56 26.851 -18 17 59.66 W N86
2022-12-26 20:02:24 C 23 56 23.472 -18 08 40.67 V M22
2022-12-26 20:07:05 C 23 56 23.429 -18 08 34.51 V M22
2022-12-26 20:16:21 C 23 56 23.359 -18 08 22.49 V M22
2022-12-26 20:42:54 C 23 56 23.131 -18 07 47.89 V M22
2022-12-29 02:17:53 C 23 56 04.613 -16 57 50.98 V W68
2022-12-29 02:21:53 C 23 56 04.584 -16 57 45.40 V W68
2022-12-29 02:29:53 C 23 56 04.555 -16 57 34.70 V W68
2022-12-29 02:48:14 C 23 56 04.469 -16 57 10.30 V W68
2022-12-29 19:25:01 C 23 56 00.535 -16 35 11.76 V M22
2022-12-29 19:34:07 C 23 56 00.480 -16 34 59.81 V M22
2022-12-29 19:38:40 C 23 56 00.454 -16 34 54.01 V M22
2022-12-29 20:06:18 C 23 56 00.319 -16 34 17.00 V M22
2023-01-01 00:53:21 C 23 55 52.406 -15 23 33.40 V W68
2023-01-01 00:57:53 C 23 55 52.421 -15 23 26.84 V W68
2023-01-01 01:06:20 C 23 55 52.351 -15 23 15.36 V W68
2023-01-01 01:20:38 C 23 55 52.339 -15 22 55.96 V W68
2023-01-09 05:19:33 C 23 56 07.183 -10 48 03.13 U F51
2023-01-09 05:26:55 C 23 56 07.189 -10 47 52.35 U F51
2023-01-09 05:34:18 C 23 56 07.193 -10 47 41.52 U F51
2023-01-21 01:45:06 C 23 56 30.026 -03 30 30.56 V 703
2023-01-21 01:51:42 C 23 56 29.987 -03 30 19.94 V 703
2023-01-21 01:58:18 C 23 56 29.929 -03 30 09.25 V 703
2023-01-21 02:04:54 C 23 56 29.900 -03 29 58.49 V 703
2023-04-05 09:06:54 C 21 16 20.335 -05 40 21.11 V W68
2023-04-05 09:10:53 C 21 16 20.460 -05 40 25.86 V W68
2023-04-05 09:18:58 C 21 16 20.705 -05 40 36.37 V W68
2023-04-05 09:44:21 C 21 16 21.528 -05 41 09.02 V W68
2023-04-08 09:25:40 C 21 18 56.928 -07 10 25.39 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)