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
2020-12-08 11:15:50 C 23 55 35.42 -28 22 16.4 q Q68
2020-12-08 11:18:02 C 23 55 35.07 -28 22 13.1 q Q68
2020-12-08 11:20:13 C 23 55 34.70 -28 22 09.8 q Q68
2020-12-08 11:22:25 C 23 55 34.34 -28 22 06.4 q Q68
2020-12-08 12:27:30 C 23 55 23.69 -28 20 28.3 q Q68
2020-12-08 12:29:41 C 23 55 23.33 -28 20 25.1 q Q68
2020-12-08 12:31:52 C 23 55 23.01 -28 20 22.0 q Q68
2020-12-08 12:34:04 C 23 55 22.63 -28 20 18.5 q Q68
2020-12-10 06:09:15 C 23 48 47.36 -27 17 12.9 V T05
2020-12-10 06:13:52 C 23 48 46.60 -27 17 05.7 V T05
2020-12-10 06:23:06 C 23 48 45.10 -27 16 51.1 V T05
2020-12-10 06:39:37 C 23 48 42.40 -27 16 25.1 V T05
2020-12-12 01:21:50 C 23 42 01.35 -26 07 39.0 q 834
2020-12-12 02:00:02 C 23 41 55.29 -26 06 35.6 q 834
2020-12-12 06:01:37 C 23 41 18.33 -26 00 18.1 V T08
2020-12-12 06:06:56 C 23 41 17.48 -26 00 09.3 V T08
2020-12-12 06:16:13 C 23 41 15.99 -25 59 53.8 V T08
2020-12-12 06:32:09 C 23 41 13.42 -25 59 27.3 V T08
2020-12-14 06:07:01 C 23 33 52.85 -24 39 04.5 V T05
2020-12-14 06:11:38 C 23 33 52.11 -24 38 56.4 V T05
2020-12-14 06:19:34 C 23 33 50.87 -24 38 42.6 V T05
2020-12-14 06:35:25 C 23 33 48.35 -24 38 14.8 V T05
2020-12-16 02:30:29 C 23 27 04.98 -23 20 50.9 V 703
2020-12-16 02:38:25 C 23 27 03.75 -23 20 35.7 V 703
2020-12-16 02:46:22 C 23 27 02.49 -23 20 21.7 V 703
2020-12-16 02:54:18 C 23 27 01.28 -23 20 06.1 V 703
2020-12-19 01:25:31 C 23 16 14.30 -21 09 41.4 V 703
2020-12-19 01:33:44 C 23 16 13.02 -21 09 25.8 V 703
2020-12-19 01:41:56 C 23 16 11.71 -21 09 09.9 V 703
2020-12-19 01:50:09 C 23 16 10.41 -21 08 54.4 V 703
2020-12-22 05:50:54 C 23 04 23.39 -18 40 44.7 V T05
2020-12-22 05:55:31 C 23 04 22.65 -18 40 35.4 V T05
2020-12-22 06:04:47 C 23 04 21.14 -18 40 16.8 V T05
2020-12-22 06:22:35 C 23 04 18.29 -18 39 40.9 V T05
2020-12-24 04:53:29 C 22 56 55.89 -17 05 41.5 V T08
2020-12-24 05:04:06 C 22 56 54.13 -17 05 19.7 V T08
2020-12-24 05:09:25 C 22 56 53.25 -17 05 08.8 V T08
2020-12-24 05:28:40 C 22 56 50.06 -17 04 29.1 V T08
2020-12-26 01:27:39 C 22 49 40.70 -15 33 37.9 V 703
2020-12-26 01:35:20 C 22 49 39.39 -15 33 21.7 V 703
2020-12-26 01:43:02 C 22 49 38.07 -15 33 05.8 V 703
2020-12-26 01:50:44 C 22 49 36.76 -15 32 49.6 V 703
2020-12-26 04:47:20 C 22 49 07.51 -15 26 37.4 V T05
2020-12-26 04:51:57 C 22 49 06.72 -15 26 27.8 V T05
2020-12-26 05:02:30 C 22 49 04.92 -15 26 05.5 V T05
2020-12-26 05:17:02 C 22 49 02.43 -15 25 34.9 V T05
2020-12-28 05:31:32 C 22 40 53.76 -13 43 49.8 V T08
2020-12-28 05:36:52 C 22 40 52.82 -13 43 38.1 V T08
2020-12-28 05:45:31 C 22 40 51.30 -13 43 19.6 V T08
2020-12-28 06:02:06 C 22 40 48.37 -13 42 44.3 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)