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
2020-10-23 13:24:11 S 02 52 35.508 -32 09 58.82 V C57
2020-10-23 13:24:11 s 1 +181962.61 8 +182375.45 9280.0 C57
2020-10-23 13:34:11 S 02 52 34.298 -32 10 08.22 V C57
2020-10-23 13:34:11 s 1 +181867.49 6 +183102.84 8820.0 C57
2020-10-23 13:44:11 S 02 52 33.278 -32 10 15.96 V C57
2020-10-23 13:44:11 s 1 +181770.86 0 +183828.70 7530.0 C57
2020-10-23 13:54:11 S 02 52 32.148 -32 10 24.71 V C57
2020-10-23 13:54:11 s 1 +181672.71 7 +184553.05 5420.0 C57
2020-10-23 14:04:11 S 02 52 30.998 -32 10 34.46 V C57
2020-10-23 14:04:11 s 1 +181573.07 7 +185275.89 2470.0 C57
2020-10-23 14:14:11 S 02 52 30.055 -32 10 42.42 V C57
2020-10-23 14:14:11 s 1 +181471.94 8 +185997.20 8710.0 C57
2020-10-23 14:24:11 S 02 52 28.951 -32 10 53.26 V C57
2020-10-23 14:24:11 s 1 +181369.33 9 +186717.01 4130.0 C57
2020-10-23 14:34:11 S 02 52 27.773 -32 11 00.89 V C57
2020-10-23 14:34:11 s 1 +181265.25 7 +187435.30 8740.0 C57
2020-10-23 14:44:11 S 02 52 26.674 -32 11 07.84 V C57
2020-10-23 14:44:11 s 1 +181159.71 2 +188152.08 2550.0 C57
2020-10-23 14:54:11 S 02 52 25.572 -32 11 17.02 V C57
2020-10-23 14:54:11 s 1 +181052.71 1 +188867.35 5560.0 C57
2020-10-23 15:04:11 S 02 52 24.394 -32 11 26.48 V C57
2020-10-23 15:04:11 s 1 +180944.26 3 +189581.12 7770.0 C57
2020-10-23 15:14:11 S 02 52 23.311 -32 11 34.58 V C57
2020-10-23 15:14:11 s 1 +180834.37 5 +190293.39 9200.0 C57
2020-10-23 15:24:11 S 02 52 22.238 -32 11 43.40 V C57
2020-10-23 15:24:11 s 1 +180723.05 6 +191004.15 9840.0 C57
2020-10-23 15:34:11 S 02 52 21.058 -32 11 51.43 V C57
2020-10-23 15:34:11 s 1 +180610.31 5 +191713.41 9710.0 C57
2020-10-23 15:44:11 S 02 52 19.987 -32 12 01.26 V C57
2020-10-23 15:44:11 s 1 +180496.15 8 +192421.17 8800.0 C57
2020-10-23 15:54:11 S 02 52 18.876 -32 12 08.53 V C57
2020-10-23 15:54:11 s 1 +180380.59 4 +193127.44 7120.0 C57
2020-10-23 16:04:11 S 02 52 17.698 -32 12 18.54 V C57
2020-10-23 16:04:11 s 1 +180263.63 0 +193832.21 4670.0 C57
2020-10-23 16:34:11 S 02 52 14.470 -32 12 45.25 V C57
2020-10-23 16:34:11 s 1 +179904.42 2 +195937.58 2800.0 C57
2020-10-23 16:44:11 S 02 52 13.289 -32 12 53.86 V C57
2020-10-23 16:44:11 s 1 +179781.93 8 +196636.40 7350.0 C57
2020-10-23 16:54:11 S 02 52 12.151 -32 13 01.56 V C57
2020-10-23 16:54:11 s 1 +179658.09 3 +197333.73 1160.0 C57
2020-10-23 17:04:11 S 02 52 11.028 -32 13 10.60 V C57
2020-10-23 17:04:11 s 1 +179532.89 6 +198029.57 4230.0 C57
2020-10-23 17:14:11 S 02 52 09.914 -32 13 18.80 V C57
2020-10-23 17:14:11 s 1 +179406.35 2 +198723.94 6560.0 C57
2020-10-23 17:24:11 S 02 52 08.830 -32 13 28.24 V C57
2020-10-23 17:24:11 s 1 +179278.46 9 +199416.83 8180.0 C57
2020-10-23 17:34:11 S 02 52 07.714 -32 13 36.66 V C57
2020-10-23 17:34:11 s 1 +179149.25 5 +200108.24 9070.0 C57
2020-10-23 17:44:11 S 02 52 06.631 -32 13 45.91 V C57
2020-10-23 17:44:11 s 1 +179018.71 8 +200798.17 9240.0 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)