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
2020-10-24 06:24:11 S 02 50 40.970 -32 24 35.10 V C57
2020-10-24 06:24:11 s 1 +165711.61 7 +249063.77 130.0 C57
2020-10-24 06:34:11 S 02 50 39.835 -32 24 44.68 V C57
2020-10-24 06:34:11 s 1 +165497.60 3 +249645.88 6300.0 C57
2020-10-24 06:44:11 S 02 50 38.746 -32 24 53.35 V C57
2020-10-24 06:44:11 s 1 +165282.70 6 +250226.65 2030.0 C57
2020-10-24 06:54:11 S 02 50 37.543 -32 25 00.23 V C57
2020-10-24 06:54:11 s 1 +165066.93 2 +250806.10 7320.0 C57
2020-10-24 07:04:11 S 02 50 36.377 -32 25 08.90 V C57
2020-10-24 07:04:11 s 1 +164850.28 4 +251384.23 2160.0 C57
2020-10-24 07:14:11 S 02 50 35.285 -32 25 17.22 V C57
2020-10-24 07:14:11 s 1 +164632.76 6 +251961.04 6550.0 C57
2020-10-24 07:24:11 S 02 50 34.058 -32 25 25.90 V C57
2020-10-24 07:24:11 s 1 +164414.38 4 +252536.52 510.0 C57
2020-10-24 07:34:11 S 02 50 32.945 -32 25 34.72 V C57
2020-10-24 07:34:11 s 1 +164195.14 2 +253110.68 4040.0 C57
2020-10-24 07:44:11 S 02 50 31.812 -32 25 43.07 V C57
2020-10-24 07:44:11 s 1 +163975.04 3 +253683.53 7130.0 C57
2020-10-24 07:54:11 S 02 50 30.679 -32 25 50.81 V C57
2020-10-24 07:54:11 s 1 +163754.09 2 +254255.06 9790.0 C57
2020-10-24 08:04:11 S 02 50 29.561 -32 25 59.38 V C57
2020-10-24 08:04:11 s 1 +163532.29 2 +254825.27 2020.0 C57
2020-10-24 08:14:11 S 02 50 28.445 -32 26 07.84 V C57
2020-10-24 08:14:11 s 1 +163309.64 9 +255394.18 3830.0 C57
2020-10-24 08:24:11 S 02 50 27.312 -32 26 17.99 V C57
2020-10-24 08:24:11 s 1 +163086.16 6 +255961.77 5220.0 C57
2020-10-24 08:34:11 S 02 50 26.177 -32 26 24.00 V C57
2020-10-24 08:34:11 s 1 +162861.84 8 +256528.05 6180.0 C57
2020-10-24 08:44:11 S 02 50 25.030 -32 26 33.29 V C57
2020-10-24 08:44:11 s 1 +162636.69 8 +257093.03 6730.0 C57
2020-10-24 08:54:11 S 02 50 23.839 -32 26 42.14 V C57
2020-10-24 08:54:11 s 1 +162410.72 1 +257656.70 6860.0 C57
2020-10-24 09:24:11 S 02 50 20.465 -32 27 06.70 V C57
2020-10-24 09:24:11 s 1 +161727.86 4 +259339.89 4780.0 C57
2020-10-24 09:34:11 S 02 50 19.282 -32 27 15.34 V C57
2020-10-24 09:34:11 s 1 +161498.61 7 +259898.36 3270.0 C57
2020-10-24 09:44:11 S 02 50 18.190 -32 27 23.15 V C57
2020-10-24 09:44:11 s 1 +161268.56 3 +260455.53 1360.0 C57
2020-10-24 09:54:11 S 02 50 17.014 -32 27 31.93 V C57
2020-10-24 09:54:11 s 1 +161037.70 5 +261011.40 9040.0 C57
2020-10-24 10:04:11 S 02 50 15.936 -32 27 39.82 V C57
2020-10-24 10:04:11 s 1 +160806.04 8 +261565.98 6330.0 C57
2020-10-24 10:14:11 S 02 50 14.758 -32 27 49.54 V C57
2020-10-24 10:14:11 s 1 +160573.59 4 +262119.26 3220.0 C57
2020-10-24 10:24:11 S 02 50 13.668 -32 27 57.42 V C57
2020-10-24 10:24:11 s 1 +160340.34 9 +262671.26 9720.0 C57
2020-10-24 10:34:11 S 02 50 12.430 -32 28 05.45 V C57
2020-10-24 10:34:11 s 1 +160106.31 6 +263221.97 5830.0 C57
2020-10-24 10:44:11 S 02 50 11.321 -32 28 15.06 V C57
2020-10-24 10:44:11 s 1 +159871.49 8 +263771.39 1540.0 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)