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
2020-08-07 13:20:35 C 02 58 07.25 -12 46 37.9 V T08
2020-08-07 13:25:14 C 02 58 07.43 -12 46 39.0 V T08
2020-08-07 13:47:48 C 02 58 08.49 -12 46 43.4 V T08
2020-08-15 03:04:57 C 03 05 56.02 -13 34 11.3 V C95
2020-08-15 03:26:21 C 03 05 56.86 -13 34 17.9 V C95
2020-08-15 14:38:52 C 03 06 24.25 -13 37 38.2 V T08
2020-08-15 14:47:30 C 03 06 24.59 -13 37 40.8 V T08
2020-08-15 14:53:29 C 03 06 24.86 -13 37 42.6 V T08
2020-08-15 15:10:48 C 03 06 25.54 -13 37 48.0 V T08
2020-08-17 13:32:58 C 03 08 16.77 -13 52 18.0 V T05
2020-08-17 13:38:54 C 03 08 17.00 -13 52 19.7 V T05
2020-08-17 13:47:34 C 03 08 17.33 -13 52 23.3 V T05
2020-08-17 14:04:05 C 03 08 17.99 -13 52 28.4 V T05
2020-08-21 14:11:30 C 03 11 56.70 -14 25 30.5 V T05
2020-08-21 14:16:50 C 03 11 56.88 -14 25 33.2 V T05
2020-08-21 14:45:36 C 03 11 57.89 -14 25 43.7 V T05
2020-08-21 15:06:28 C 03 11 58.61 -14 25 51.8 V T05
2020-08-23 13:40:04 C 03 13 38.51 -14 43 20.2 V T08
2020-08-23 13:47:58 C 03 13 38.79 -14 43 23.6 V T08
2020-08-23 13:53:59 C 03 13 38.97 -14 43 25.6 V T08
2020-08-23 14:05:18 C 03 13 39.38 -14 43 30.0 V T08
2020-08-27 14:14:15 C 03 16 51.58 -15 22 44.9 V T08
2020-08-27 14:29:31 C 03 16 52.06 -15 22 50.8 V T08
2020-08-27 14:47:30 C 03 16 52.58 -15 22 58.9 V T08
2020-08-27 15:16:38 C 03 16 53.47 -15 23 12.1 V T08
2020-08-29 13:41:37 C 03 18 19.15 -15 43 41.8 V T05
2020-08-29 13:44:15 C 03 18 19.23 -15 43 43.0 V T05
2020-08-29 13:48:14 C 03 18 19.34 -15 43 44.8 V T05
2020-08-29 14:02:43 C 03 18 19.77 -15 43 51.9 V T05
2020-08-30 13:19:11 C 03 19 00.83 -15 54 32.8 V T08
2020-08-30 13:21:50 C 03 19 00.89 -15 54 32.9 V T08
2020-08-30 13:25:49 C 03 19 00.94 -15 54 35.0 V T08
2020-08-30 13:40:25 C 03 19 01.32 -15 54 42.6 V T08
2020-09-01 10:31:53 C 03 20 16.76 -16 16 01.7 U I41
2020-09-01 11:33:05 C 03 20 18.34 -16 16 31.5 U I41
2020-09-03 11:08:57 C 03 21 32.52 -16 40 14.7 U I41
2020-09-03 11:51:14 C 03 21 33.49 -16 40 36.4 U I41
2020-09-03 12:41:03 C 03 21 34.98 -16 41 00.0 V T08
2020-09-03 12:43:42 C 03 21 35.02 -16 41 01.8 V T08
2020-09-03 12:49:00 C 03 21 35.10 -16 41 03.9 V T08
2020-09-03 12:58:23 C 03 21 35.32 -16 41 09.3 V T08
2020-09-04 13:25:42 C 03 22 10.91 -16 53 48.4 V T08
2020-09-04 13:29:01 C 03 22 10.99 -16 53 50.2 V T08
2020-09-04 13:37:04 C 03 22 11.14 -16 53 54.4 V T08
2020-09-04 13:53:03 C 03 22 11.49 -16 54 02.8 V T08
2020-09-06 13:40:48 C 03 23 16.15 -17 19 39.4 V T05
2020-09-06 13:43:27 C 03 23 16.19 -17 19 40.9 V T05
2020-09-06 13:47:25 C 03 23 16.32 -17 19 43.1 V T05
2020-09-06 14:07:16 C 03 23 16.67 -17 19 54.2 V T05
2020-09-08 14:14:57 C 03 24 14.75 -17 46 53.1 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)