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 22:04:11 S 02 51 37.476 -32 17 30.59 V C57
2020-10-23 22:04:11 s 1 +175182.80 3 +218225.06 5700.0 C57
2020-10-23 22:14:11 S 02 51 36.336 -32 17 37.57 V C57
2020-10-23 22:14:11 s 1 +175019.10 2 +218875.90 8070.0 C57
2020-10-23 22:24:11 S 02 51 35.268 -32 17 46.50 V C57
2020-10-23 22:24:11 s 1 +174854.26 3 +219525.32 9840.0 C57
2020-10-23 22:34:11 S 02 51 34.049 -32 17 55.82 V C57
2020-10-23 22:34:11 s 1 +174688.29 2 +220173.32 1010.0 C57
2020-10-23 22:44:11 S 02 51 33.014 -32 18 04.72 V C57
2020-10-23 22:44:11 s 1 +174521.19 3 +220819.91 1580.0 C57
2020-10-23 22:54:11 S 02 51 31.925 -32 18 13.39 V C57
2020-10-23 22:54:11 s 1 +174352.97 4 +221465.08 1560.0 C57
2020-10-23 23:04:11 S 02 51 30.672 -32 18 20.63 V C57
2020-10-23 23:04:11 s 1 +174183.63 9 +222108.83 950.0 C57
2020-10-23 23:14:11 S 02 51 29.638 -32 18 29.56 V C57
2020-10-23 23:14:11 s 1 +174013.19 5 +222751.18 9750.0 C57
2020-10-23 23:24:11 S 02 51 28.570 -32 18 38.70 V C57
2020-10-23 23:24:11 s 1 +173841.64 8 +223392.11 7970.0 C57
2020-10-23 23:34:11 S 02 51 27.408 -32 18 47.09 V C57
2020-10-23 23:34:11 s 1 +173669.00 3 +224031.64 5610.0 C57
2020-10-23 23:44:11 S 02 51 26.292 -32 18 55.94 V C57
2020-10-23 23:44:11 s 1 +173495.26 6 +224669.77 2670.0 C57
2020-10-23 23:54:11 S 02 51 25.003 -32 19 04.15 V C57
2020-10-23 23:54:11 s 1 +173320.44 3 +225306.48 9160.0 C57
2020-10-24 00:04:11 S 02 51 23.978 -32 19 12.94 V C57
2020-10-24 00:04:11 s 1 +173144.53 9 +225941.80 5080.0 C57
2020-10-24 00:14:11 S 02 51 22.798 -32 19 21.43 V C57
2020-10-24 00:14:11 s 1 +172967.56 0 +226575.72 440.0 C57
2020-10-24 00:24:11 S 02 51 21.737 -32 19 30.18 V C57
2020-10-24 00:24:11 s 1 +172789.51 2 +227208.24 5230.0 C57
2020-10-24 00:34:11 S 02 51 20.587 -32 19 38.35 V C57
2020-10-24 00:34:11 s 1 +172610.40 0 +227839.36 9470.0 C57
2020-10-24 00:44:11 S 02 51 19.409 -32 19 46.88 V C57
2020-10-24 00:44:11 s 1 +172430.22 9 +228469.09 3150.0 C57
2020-10-24 00:54:11 S 02 51 18.343 -32 19 54.44 V C57
2020-10-24 00:54:11 s 1 +172249.00 5 +229097.43 6270.0 C57
2020-10-24 01:04:11 S 02 51 17.131 -32 20 03.19 V C57
2020-10-24 01:04:11 s 1 +172066.73 3 +229724.38 8850.0 C57
2020-10-24 01:14:11 S 02 51 16.078 -32 20 12.12 V C57
2020-10-24 01:14:11 s 1 +171883.41 9 +230349.94 880.0 C57
2020-10-24 01:24:11 S 02 51 14.918 -32 20 19.14 V C57
2020-10-24 01:24:11 s 1 +171699.06 9 +230974.11 2370.0 C57
2020-10-24 01:34:11 S 02 51 13.812 -32 20 29.36 V C57
2020-10-24 01:34:11 s 1 +171513.68 7 +231596.90 3320.0 C57
2020-10-24 01:44:11 S 02 51 12.674 -32 20 37.79 V C57
2020-10-24 01:44:11 s 1 +171327.27 8 +232218.31 3740.0 C57
2020-10-24 01:54:11 S 02 51 11.602 -32 20 46.07 V C57
2020-10-24 01:54:11 s 1 +171139.84 9 +232838.33 3620.0 C57
2020-10-24 02:04:11 S 02 51 10.500 -32 20 54.06 V C57
2020-10-24 02:04:11 s 1 +170951.40 4 +233456.98 2970.0 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)