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 04:34:11 s 1 +184583.27 4 +141601.43 9640.0 C57
2020-10-23 04:44:11 S 02 53 32.746 -32 02 19.21 V C57
2020-10-23 04:44:11 s 1 +184582.74 7 +142411.85 2420.0 C57
2020-10-23 04:54:11 S 02 53 31.632 -32 02 28.50 V C57
2020-10-23 04:54:11 s 1 +184580.13 7 +143220.67 4010.0 C57
2020-10-23 05:04:11 S 02 53 30.509 -32 02 37.03 V C57
2020-10-23 05:04:11 s 1 +184575.45 5 +144027.88 4410.0 C57
2020-10-23 05:34:11 S 02 53 27.206 -32 03 04.36 V C57
2020-10-23 05:34:11 s 1 +184549.11 4 +146439.92 8590.0 C57
2020-10-23 05:44:11 S 02 53 26.191 -32 03 13.57 V C57
2020-10-23 05:44:11 s 1 +184536.27 8 +147240.74 4330.0 C57
2020-10-23 05:54:11 S 02 53 24.967 -32 03 21.02 V C57
2020-10-23 05:54:11 s 1 +184521.43 5 +148039.96 8940.0 C57
2020-10-23 06:04:11 S 02 53 23.902 -32 03 29.16 V C57
2020-10-23 06:04:11 s 1 +184504.59 8 +148837.58 2400.0 C57
2020-10-23 06:14:11 S 02 53 22.901 -32 03 39.78 V C57
2020-10-23 06:14:11 s 1 +184485.77 9 +149633.61 4740.0 C57
2020-10-23 06:24:11 S 02 53 21.684 -32 03 47.23 V C57
2020-10-23 06:24:11 s 1 +184464.99 1 +150428.05 5950.0 C57
2020-10-23 06:34:11 S 02 53 20.666 -32 03 57.74 V C57
2020-10-23 06:34:11 s 1 +184442.24 5 +151220.89 6060.0 C57
2020-10-23 06:44:11 S 02 53 19.555 -32 04 05.09 V C57
2020-10-23 06:44:11 s 1 +184417.55 4 +152012.14 5060.0 C57
2020-10-23 06:54:11 S 02 53 18.569 -32 04 15.56 V C57
2020-10-23 06:54:11 s 1 +184390.93 1 +152801.81 2960.0 C57
2020-10-23 07:04:11 S 02 53 17.388 -32 04 22.73 V C57
2020-10-23 07:04:11 s 1 +184362.38 5 +153589.88 9770.0 C57
2020-10-23 07:14:11 S 02 53 16.303 -32 04 31.51 V C57
2020-10-23 07:14:11 s 1 +184331.93 1 +154376.37 5500.0 C57
2020-10-23 07:24:11 S 02 53 15.175 -32 04 41.05 V C57
2020-10-23 07:24:11 s 1 +184299.57 8 +155161.28 160.0 C57
2020-10-23 07:34:11 S 02 53 14.083 -32 04 50.59 V C57
2020-10-23 07:34:11 s 1 +184265.34 0 +155944.60 3750.0 C57
2020-10-23 07:44:11 S 02 53 13.116 -32 04 59.09 V C57
2020-10-23 07:44:11 s 1 +184229.22 7 +156726.34 6270.0 C57
2020-10-23 07:54:11 S 02 53 11.897 -32 05 08.20 V C57
2020-10-23 07:54:11 s 1 +184191.25 1 +157506.50 7750.0 C57
2020-10-23 08:04:11 S 02 53 10.913 -32 05 16.66 V C57
2020-10-23 08:04:11 s 1 +184151.42 3 +158285.08 8170.0 C57
2020-10-23 08:14:11 S 02 53 09.696 -32 05 25.69 V C57
2020-10-23 08:14:11 s 1 +184109.75 5 +159062.08 7560.0 C57
2020-10-23 08:24:11 S 02 53 08.626 -32 05 34.26 V C57
2020-10-23 08:24:11 s 1 +184066.25 7 +159837.51 5920.0 C57
2020-10-23 08:34:11 S 02 53 07.459 -32 05 42.97 V C57
2020-10-23 08:34:11 s 1 +184020.94 1 +160611.36 3250.0 C57
2020-10-23 08:44:11 S 02 53 06.360 -32 05 52.51 V C57
2020-10-23 08:44:11 s 1 +183973.81 8 +161383.63 9570.0 C57
2020-10-23 08:54:11 S 02 53 05.321 -32 06 01.04 V C57
2020-10-23 08:54:11 s 1 +183924.89 9 +162154.34 4870.0 C57
2020-10-23 09:04:11 S 02 53 04.222 -32 06 10.30 V 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)