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
2020-10-25 15:44:11 S 02 46 48.720 -32 51 49.82 V C57
2020-10-25 15:44:11 s 1 +109811.17 9 +341082.87 8530.0 C57
2020-10-25 15:54:11 S 02 46 47.477 -32 51 55.22 V C57
2020-10-25 15:54:11 s 1 +109483.32 0 +341428.64 2800.0 C57
2020-10-25 16:04:11 S 02 46 46.253 -32 52 04.51 V C57
2020-10-25 16:04:11 s 1 +109155.12 1 +341773.36 6950.0 C57
2020-10-25 16:14:11 S 02 46 45.149 -32 52 12.86 V C57
2020-10-25 16:14:11 s 1 +108826.58 3 +342117.01 990.0 C57
2020-10-25 16:24:11 S 02 46 43.891 -32 52 20.32 V C57
2020-10-25 16:24:11 s 1 +108497.70 9 +342459.60 4910.0 C57
2020-10-25 16:34:11 S 02 46 42.658 -32 52 28.92 V C57
2020-10-25 16:34:11 s 1 +108168.49 9 +342801.13 8710.0 C57
2020-10-25 16:44:11 S 02 46 41.506 -32 52 36.37 V C57
2020-10-25 16:44:11 s 1 +107838.95 6 +343141.60 2390.0 C57
2020-10-25 16:54:11 S 02 46 40.445 -32 52 43.46 V C57
2020-10-25 16:54:11 s 1 +107509.08 0 +343481.02 5960.0 C57
2020-10-25 17:04:11 S 02 46 39.252 -32 52 51.96 V C57
2020-10-25 17:04:11 s 1 +107178.87 5 +343819.38 9420.0 C57
2020-10-25 17:14:11 S 02 46 38.045 -32 52 59.70 V C57
2020-10-25 17:14:11 s 1 +106848.34 0 +344156.68 2760.0 C57
2020-10-25 17:24:11 S 02 46 36.749 -32 53 07.26 V C57
2020-10-25 17:24:11 s 1 +106517.47 9 +344492.94 5990.0 C57
2020-10-25 17:34:11 S 02 46 35.616 -32 53 15.90 V C57
2020-10-25 17:34:11 s 1 +106186.29 2 +344828.13 9110.0 C57
2020-10-25 17:44:11 S 02 46 34.373 -32 53 22.78 V C57
2020-10-25 17:44:11 s 1 +105854.78 1 +345162.28 2130.0 C57
2020-10-25 17:54:11 S 02 46 33.202 -32 53 31.38 V C57
2020-10-25 17:54:11 s 1 +105522.94 9 +345495.37 5030.0 C57
2020-10-25 18:04:11 S 02 46 32.095 -32 53 38.69 V C57
2020-10-25 18:04:11 s 1 +105190.79 5 +345827.42 7820.0 C57
2020-10-25 18:14:11 S 02 46 30.936 -32 53 47.33 V C57
2020-10-25 18:14:11 s 1 +104858.32 2 +346158.41 510.0 C57
2020-10-25 18:24:11 S 02 46 29.671 -32 53 53.70 V C57
2020-10-25 18:24:11 s 1 +104525.53 2 +346488.36 3090.0 C57
2020-10-25 18:34:11 S 02 46 28.462 -32 54 03.10 V C57
2020-10-25 18:34:11 s 1 +104192.42 7 +346817.25 5570.0 C57
2020-10-25 18:44:11 S 02 46 27.281 -32 54 10.87 V C57
2020-10-25 18:44:11 s 1 +103859.00 7 +347145.10 7950.0 C57
2020-10-25 18:54:11 S 02 46 26.083 -32 54 18.04 V C57
2020-10-25 18:54:11 s 1 +103525.27 4 +347471.91 220.0 C57
2020-10-25 19:04:11 S 02 46 24.972 -32 54 25.99 V C57
2020-10-25 19:04:11 s 1 +103191.23 0 +347797.67 2390.0 C57
2020-10-25 19:14:11 S 02 46 23.758 -32 54 34.09 V C57
2020-10-25 19:14:11 s 1 +102856.87 6 +348122.38 4460.0 C57
2020-10-25 19:24:11 S 02 46 22.517 -32 54 41.90 V C57
2020-10-25 19:24:11 s 1 +102522.21 5 +348446.05 6430.0 C57
2020-10-25 19:34:11 S 02 46 21.334 -32 54 50.08 V C57
2020-10-25 19:34:11 s 1 +102187.24 6 +348768.68 8300.0 C57
2020-10-25 19:44:11 S 02 46 20.122 -32 54 57.85 V C57
2020-10-25 19:44:11 s 1 +101851.97 3 +349090.27 70.0 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)