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
2020-10-25 19:54:11 S 02 46 18.950 -32 55 05.05 V C57
2020-10-25 19:54:11 s 1 +101516.39 7 +349410.81 1750.0 C57
2020-10-25 20:04:11 S 02 46 17.834 -32 55 11.93 V C57
2020-10-25 20:04:11 s 1 +101180.51 9 +349730.32 3320.0 C57
2020-10-25 20:14:11 S 02 46 16.637 -32 55 20.96 V C57
2020-10-25 20:14:11 s 1 +100844.34 0 +350048.78 4810.0 C57
2020-10-25 20:24:11 S 02 46 15.418 -32 55 29.53 V C57
2020-10-25 20:24:11 s 1 +100507.86 3 +350366.21 6200.0 C57
2020-10-25 20:34:11 S 02 46 14.182 -32 55 36.05 V C57
2020-10-25 20:34:11 s 1 +100171.08 8 +350682.60 7500.0 C57
2020-10-25 20:44:11 S 02 46 13.063 -32 55 44.22 V C57
2020-10-25 20:44:11 s 1 +99834.018 0 +350997.96 8700.0 C57
2020-10-25 20:54:11 S 02 46 11.808 -32 55 52.75 V C57
2020-10-25 20:54:11 s 1 +99496.653 0 +351312.28 9820.0 C57
2020-10-25 21:04:11 S 02 46 10.622 -32 56 01.03 V C57
2020-10-25 21:04:11 s 1 +99158.995 0 +351625.56 840.0 C57
2020-10-25 21:14:11 S 02 46 09.463 -32 56 08.27 V C57
2020-10-25 21:14:11 s 1 +98821.047 0 +351937.81 1780.0 C57
2020-10-25 21:24:11 S 02 46 08.273 -32 56 14.68 V C57
2020-10-25 21:24:11 s 1 +98482.808 0 +352249.03 2620.0 C57
2020-10-25 21:34:11 S 02 46 07.111 -32 56 23.24 V C57
2020-10-25 21:34:11 s 1 +98144.281 0 +352559.21 3380.0 C57
2020-10-25 21:44:11 S 02 46 05.899 -32 56 32.21 V C57
2020-10-25 21:44:11 s 1 +97805.467 0 +352868.36 4060.0 C57
2020-10-25 21:54:11 S 02 46 04.639 -32 56 39.98 V C57
2020-10-25 21:54:11 s 1 +97466.368 0 +353176.49 4640.0 C57
2020-10-25 22:04:11 S 02 46 03.451 -32 56 46.64 V C57
2020-10-25 22:04:11 s 1 +97126.985 0 +353483.58 5150.0 C57
2020-10-25 22:14:11 S 02 46 02.314 -32 56 54.38 V C57
2020-10-25 22:14:11 s 1 +96787.320 0 +353789.64 5570.0 C57
2020-10-25 22:24:11 S 02 46 01.018 -32 57 02.88 V C57
2020-10-25 22:24:11 s 1 +96447.374 0 +354094.68 5900.0 C57
2020-10-25 22:34:11 S 02 45 59.904 -32 57 11.23 V C57
2020-10-25 22:34:11 s 1 +96107.148 0 +354398.68 6160.0 C57
2020-10-25 22:44:11 S 02 45 58.697 -32 57 18.43 V C57
2020-10-25 22:44:11 s 1 +95766.644 0 +354701.66 6330.0 C57
2020-10-25 22:54:11 S 02 45 57.614 -32 57 24.95 V C57
2020-10-25 22:54:11 s 1 +95425.864 0 +355003.62 6420.0 C57
2020-10-25 23:04:11 S 02 45 56.280 -32 57 32.18 V C57
2020-10-25 23:04:11 s 1 +95084.808 0 +355304.55 6440.0 C57
2020-10-25 23:14:11 S 02 45 55.082 -32 57 41.76 V C57
2020-10-25 23:14:11 s 1 +94743.479 0 +355604.46 6380.0 C57
2020-10-25 23:24:11 S 02 45 53.962 -32 57 50.29 V C57
2020-10-25 23:24:11 s 1 +94401.877 0 +355903.34 6240.0 C57
2020-10-25 23:34:11 S 02 45 52.654 -32 57 55.98 V C57
2020-10-25 23:34:11 s 1 +94060.005 0 +356201.20 6020.0 C57
2020-10-25 23:44:11 S 02 45 51.586 -32 58 04.30 V C57
2020-10-25 23:44:11 s 1 +93717.863 0 +356498.04 5730.0 C57
2020-10-25 23:54:11 S 02 45 50.398 -32 58 12.29 V C57
2020-10-25 23:54:11 s 1 +93375.453 0 +356793.85 5360.0 C57
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)