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
2018-11-21 07:14:39 S 05 17 27.530 -60 01 15.74 V C57
2018-11-21 07:14:39 s 1 -37424.705 0 +376745.71 6110.0 C57
2018-11-21 07:44:39 S 05 17 29.719 -60 05 47.51 V C57
2018-11-21 07:44:39 s 1 -38454.679 0 +376803.44 6570.0 C57
2018-11-21 08:44:39 S 05 17 33.917 -60 14 29.87 V C57
2018-11-21 08:44:39 s 1 -40511.678 0 +376892.04 700.0 C57
2018-11-21 08:45:49 S 05 17 33.98 -60 14 44.3 V C57
2018-11-21 08:45:49 s 1 -40551.169 0 +376893.39 3030.0 C57
2018-11-21 09:14:39 S 05 17 36.326 -60 19 07.25 V C57
2018-11-21 09:14:39 s 1 -41538.654 0 +376922.91 4660.0 C57
2018-11-21 09:44:39 S 05 17 38.376 -60 23 33.68 V C57
2018-11-21 09:44:39 s 1 -42564.582 0 +376944.83 3420.0 C57
2018-11-21 10:14:39 S 05 17 40.627 -60 27 53.24 V C57
2018-11-21 10:14:39 s 1 -43589.439 0 +376957.82 7110.0 C57
2018-11-21 11:14:39 S 05 17 45.146 -60 37 10.85 V C57
2018-11-21 11:14:39 s 1 -45635.843 0 +376957.00 9880.0 C57
2018-11-21 14:44:39 S 05 18 01.476 -61 09 03.24 V C57
2018-11-21 14:44:39 s 1 -52760.984 0 +376673.42 6360.0 C57
2018-11-21 15:14:39 S 05 18 04.054 -61 13 58.12 V C57
2018-11-21 15:14:39 s 1 -53773.809 0 +376597.32 7370.0 C57
2018-11-21 15:44:39 S 05 18 06.478 -61 18 31.54 V C57
2018-11-21 15:44:39 s 1 -54785.300 0 +376512.34 4900.0 C57
2018-11-21 16:14:39 S 05 18 08.890 -61 23 05.21 V C57
2018-11-21 16:14:39 s 1 -55795.432 0 +376418.48 9090.0 C57
2018-11-21 16:44:39 S 05 18 11.321 -61 27 38.99 V C57
2018-11-21 16:44:39 s 1 -56804.182 0 +376315.75 100.0 C57
2018-11-21 17:14:39 S 05 18 13.810 -61 32 13.09 V C57
2018-11-21 17:14:39 s 1 -57811.524 0 +376204.14 8050.0 C57
2018-11-21 17:44:39 S 05 18 16.318 -61 36 47.09 V C57
2018-11-21 17:44:39 s 1 -58817.436 0 +376083.67 3100.0 C57
2018-11-21 18:14:39 S 05 18 18.797 -61 41 21.08 V C57
2018-11-21 18:14:39 s 1 -59821.894 0 +375954.34 5390.0 C57
2018-11-21 18:44:39 S 05 18 21.494 -61 46 16.97 V C57
2018-11-21 18:44:39 s 1 -60824.873 0 +375816.14 5050.0 C57
2018-11-21 19:14:39 S 05 18 24.041 -61 50 51.58 V C57
2018-11-21 19:14:39 s 1 -61826.349 0 +375669.08 2240.0 C57
2018-11-21 21:44:39 S 05 18 37.618 -62 14 50.71 V C57
2018-11-21 21:44:39 s 1 -66810.346 0 +374801.03 5980.0 C57
2018-11-21 22:44:39 S 05 18 42.910 -62 24 01.19 V C57
2018-11-21 22:44:39 s 1 -68792.580 0 +374391.89 5120.0 C57
2018-11-21 23:14:39 S 05 18 45.833 -62 28 57.36 V C57
2018-11-21 23:14:39 s 1 -69781.165 0 +374174.07 7610.0 C57
2018-11-21 23:44:39 S 05 18 48.533 -62 33 32.87 V C57
2018-11-21 23:44:39 s 1 -70768.029 0 +373947.40 8900.0 C57
2018-11-22 00:14:39 S 05 18 51.458 -62 38 29.76 V C57
2018-11-22 00:14:39 s 1 -71753.148 0 +373711.90 9140.0 C57
2018-11-22 00:44:39 S 05 18 54.595 -62 43 29.24 V C57
2018-11-22 00:44:39 s 1 -72736.498 0 +373467.56 8470.0 C57
2018-11-22 01:14:39 S 05 18 57.209 -62 48 02.38 V C57
2018-11-22 01:14:39 s 1 -73718.053 0 +373214.39 7040.0 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)