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
2020-10-24 02:14:11 S 02 51 09.264 -32 21 04.32 V C57
2020-10-24 02:14:11 s 1 +170761.94 8 +234074.25 1800.0 C57
2020-10-24 02:24:11 S 02 51 08.110 -32 21 12.35 V C57
2020-10-24 02:24:11 s 1 +170571.48 6 +234690.14 100.0 C57
2020-10-24 02:34:11 S 02 51 07.090 -32 21 19.87 V C57
2020-10-24 02:34:11 s 1 +170380.02 5 +235304.66 7880.0 C57
2020-10-24 02:44:11 S 02 51 05.981 -32 21 28.94 V C57
2020-10-24 02:44:11 s 1 +170187.56 8 +235917.81 5140.0 C57
2020-10-24 02:54:11 S 02 51 04.843 -32 21 37.48 V C57
2020-10-24 02:54:11 s 1 +169994.12 0 +236529.58 1900.0 C57
2020-10-24 03:04:11 S 02 51 03.770 -32 21 45.79 V C57
2020-10-24 03:04:11 s 1 +169799.68 8 +237140.00 8130.0 C57
2020-10-24 03:14:11 S 02 51 02.465 -32 21 54.54 V C57
2020-10-24 03:14:11 s 1 +169604.27 6 +237749.04 3870.0 C57
2020-10-24 03:24:11 S 02 51 01.392 -32 22 04.44 V C57
2020-10-24 03:24:11 s 1 +169407.88 8 +238356.72 9090.0 C57
2020-10-24 03:34:11 S 02 51 00.223 -32 22 12.25 V C57
2020-10-24 03:34:11 s 1 +169210.53 0 +238963.04 3820.0 C57
2020-10-24 03:44:11 S 02 50 59.110 -32 22 20.24 V C57
2020-10-24 03:44:11 s 1 +169012.20 6 +239568.00 8040.0 C57
2020-10-24 03:54:11 S 02 50 57.994 -32 22 26.98 V C57
2020-10-24 03:54:11 s 1 +168812.92 2 +240171.59 1770.0 C57
2020-10-24 04:04:11 S 02 50 56.815 -32 22 37.96 V C57
2020-10-24 04:04:11 s 1 +168612.68 2 +240773.84 5010.0 C57
2020-10-24 04:14:11 S 02 50 55.745 -32 22 45.26 V C57
2020-10-24 04:14:11 s 1 +168411.49 2 +241374.72 7750.0 C57
2020-10-24 04:24:11 S 02 50 54.559 -32 22 52.28 V C57
2020-10-24 04:24:11 s 1 +168209.35 5 +241974.26 10.0 C57
2020-10-24 04:34:11 S 02 50 53.448 -32 23 02.51 V C57
2020-10-24 04:34:11 s 1 +168006.27 7 +242572.44 1790.0 C57
2020-10-24 04:44:11 S 02 50 52.330 -32 23 11.51 V C57
2020-10-24 04:44:11 s 1 +167802.26 2 +243169.27 3080.0 C57
2020-10-24 04:54:11 S 02 50 51.298 -32 23 21.26 V C57
2020-10-24 04:54:11 s 1 +167597.31 5 +243764.76 3890.0 C57
2020-10-24 05:04:11 S 02 50 50.014 -32 23 28.39 V C57
2020-10-24 05:04:11 s 1 +167391.44 1 +244358.90 4230.0 C57
2020-10-24 05:14:11 S 02 50 48.938 -32 23 35.23 V C57
2020-10-24 05:14:11 s 1 +167184.64 5 +244951.69 4090.0 C57
2020-10-24 05:24:11 S 02 50 47.731 -32 23 45.46 V C57
2020-10-24 05:24:11 s 1 +166976.93 0 +245543.14 3490.0 C57
2020-10-24 05:34:11 S 02 50 46.618 -32 23 53.99 V C57
2020-10-24 05:34:11 s 1 +166768.30 2 +246133.26 2410.0 C57
2020-10-24 05:44:11 S 02 50 45.610 -32 24 01.12 V C57
2020-10-24 05:44:11 s 1 +166558.76 5 +246722.03 870.0 C57
2020-10-24 05:54:11 S 02 50 44.378 -32 24 10.73 V C57
2020-10-24 05:54:11 s 1 +166348.32 3 +247309.47 8870.0 C57
2020-10-24 06:04:11 S 02 50 43.250 -32 24 18.11 V C57
2020-10-24 06:04:11 s 1 +166136.98 2 +247895.57 6410.0 C57
2020-10-24 06:14:11 S 02 50 42.062 -32 24 26.42 V C57
2020-10-24 06:14:11 s 1 +165924.74 5 +248480.33 3500.0 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)