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
2020-09-08 14:27:10 C 03 24 14.94 -17 47 00.1 V T08
2020-09-08 15:08:32 C 03 24 15.65 -17 47 23.7 V T08
2020-09-08 15:13:22 C 03 24 15.72 -17 47 26.7 V T08
2020-09-09 13:45:38 C 03 24 40.52 -18 00 30.2 V T05
2020-09-09 13:54:49 C 03 24 40.64 -18 00 35.7 V T05
2020-09-09 13:59:26 C 03 24 40.74 -18 00 38.5 V T05
2020-09-09 14:13:25 C 03 24 40.96 -18 00 46.7 V T05
2020-09-11 11:45:40 C 03 25 25.67 -18 27 58.4 V T08
2020-09-11 13:11:51 C 03 25 26.80 -18 28 51.8 V T08
2020-09-11 13:16:29 C 03 25 26.85 -18 28 54.6 V T08
2020-09-11 13:21:07 C 03 25 26.92 -18 28 57.4 V T08
2020-09-11 13:32:25 C 03 25 27.07 -18 29 04.3 V T08
2020-09-13 13:27:25 C 03 26 05.62 -18 58 55.8 V T05
2020-09-13 13:30:43 C 03 26 05.66 -18 58 58.0 V T05
2020-09-13 13:38:09 C 03 26 05.734 -18 59 02.75 U F51
2020-09-13 13:48:32 C 03 26 05.82 -18 59 09.3 V T05
2020-09-13 13:53:17 C 03 26 05.88 -18 59 12.4 V T05
2020-09-13 13:54:29 C 03 26 05.895 -18 59 13.12 U F51
2020-09-13 14:11:00 C 03 26 06.057 -18 59 23.64 U F51
2020-09-15 09:26:04 C 03 26 33.48 -19 27 25.1 V 703
2020-09-15 09:34:01 C 03 26 33.54 -19 27 30.2 V 703
2020-09-15 09:41:58 C 03 26 33.59 -19 27 35.7 V 703
2020-09-15 09:49:55 C 03 26 33.64 -19 27 40.8 V 703
2020-09-15 13:08:51 C 03 26 35.40 -19 29 50.9 V T08
2020-09-15 13:12:10 C 03 26 35.42 -19 29 53.2 V T08
2020-09-15 13:18:48 C 03 26 35.46 -19 29 57.6 V T08
2020-09-15 13:26:06 C 03 26 35.51 -19 30 02.3 V T08
2020-09-17 13:28:30 C 03 26 56.14 -20 02 24.1 V T05
2020-09-17 13:32:27 C 03 26 56.14 -20 02 26.8 V T05
2020-09-17 13:36:24 C 03 26 56.17 -20 02 29.7 V T05
2020-09-17 13:43:39 C 03 26 56.19 -20 02 34.7 V T05
2020-09-17 14:15:45 C 03 26 56.28 -20 02 56.5 V T05
2020-09-17 14:20:28 C 03 26 56.31 -20 02 59.7 V T05
2020-09-17 14:57:22 C 03 26 56.41 -20 03 25.1 V T05
2020-09-18 09:18:57 C 03 27 01.90 -20 16 08.1 V 703
2020-09-18 09:26:47 C 03 27 01.92 -20 16 14.1 V 703
2020-09-18 09:34:38 C 03 27 01.95 -20 16 19.0 V 703
2020-09-18 09:42:28 C 03 27 01.94 -20 16 24.6 V 703
2020-09-19 11:57:35 C 03 27 06.84 -20 34 50.9 V T08
2020-09-19 12:02:22 C 03 27 06.85 -20 34 54.3 V T08
2020-09-19 12:11:41 C 03 27 06.85 -20 35 01.2 V T08
2020-09-19 12:27:01 C 03 27 06.85 -20 35 12.0 V T08
2020-09-21 09:54:35 C 03 27 07.50 -21 08 02.1 V 703
2020-09-21 10:02:12 C 03 27 07.45 -21 08 07.8 V 703
2020-09-21 10:09:50 C 03 27 07.44 -21 08 13.2 V 703
2020-09-21 10:17:27 C 03 27 07.38 -21 08 18.6 V 703
2020-09-21 12:47:32 C 03 27 07.23 -21 10 07.9 V T05
2020-09-21 12:53:32 C 03 27 07.20 -21 10 12.4 V T05
2020-09-21 13:05:57 C 03 27 07.15 -21 10 21.5 V T05
2020-09-21 13:58:26 C 03 27 06.91 -21 11 00.3 V T05
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)