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 23:24:11 S 02 48 43.644 -32 38 42.25 V C57
2020-10-24 23:24:11 s 1 +139991.98 5 +301880.89 3690.0 C57
2020-10-24 23:34:11 S 02 48 42.480 -32 38 49.92 V C57
2020-10-24 23:34:11 s 1 +139706.75 7 +302335.84 5430.0 C57
2020-10-24 23:44:11 S 02 48 41.386 -32 38 57.88 V C57
2020-10-24 23:44:11 s 1 +139420.98 7 +302789.61 6920.0 C57
2020-10-24 23:54:11 S 02 48 40.236 -32 39 06.19 V C57
2020-10-24 23:54:11 s 1 +139134.67 8 +303242.22 8170.0 C57
2020-10-25 00:04:11 S 02 48 39.007 -32 39 14.40 V C57
2020-10-25 00:04:11 s 1 +138847.83 2 +303693.65 9180.0 C57
2020-10-25 00:14:11 S 02 48 37.848 -32 39 22.57 V C57
2020-10-25 00:14:11 s 1 +138560.45 2 +304143.92 9950.0 C57
2020-10-25 00:24:11 S 02 48 36.718 -32 39 30.31 V C57
2020-10-25 00:24:11 s 1 +138272.54 1 +304593.02 490.0 C57
2020-10-25 00:34:11 S 02 48 35.630 -32 39 38.95 V C57
2020-10-25 00:34:11 s 1 +137984.10 0 +305040.96 790.0 C57
2020-10-25 00:44:11 S 02 48 34.387 -32 39 48.35 V C57
2020-10-25 00:44:11 s 1 +137695.13 2 +305487.74 860.0 C57
2020-10-25 00:54:11 S 02 48 33.161 -32 39 56.16 V C57
2020-10-25 00:54:11 s 1 +137405.64 1 +305933.35 690.0 C57
2020-10-25 01:04:11 S 02 48 32.033 -32 40 03.14 V C57
2020-10-25 01:04:11 s 1 +137115.62 7 +306377.80 290.0 C57
2020-10-25 01:14:11 S 02 48 30.902 -32 40 11.86 V C57
2020-10-25 01:14:11 s 1 +136825.09 4 +306821.09 9660.0 C57
2020-10-25 01:24:11 S 02 48 29.710 -32 40 20.50 V C57
2020-10-25 01:24:11 s 1 +136534.04 4 +307263.22 8810.0 C57
2020-10-25 01:34:11 S 02 48 28.675 -32 40 30.00 V C57
2020-10-25 01:34:11 s 1 +136242.48 0 +307704.20 7730.0 C57
2020-10-25 01:44:11 S 02 48 27.358 -32 40 36.37 V C57
2020-10-25 01:44:11 s 1 +135950.40 3 +308144.02 6420.0 C57
2020-10-25 01:54:11 S 02 48 26.268 -32 40 42.89 V C57
2020-10-25 01:54:11 s 1 +135657.81 6 +308582.68 4890.0 C57
2020-10-25 02:04:11 S 02 48 25.006 -32 40 50.84 V C57
2020-10-25 02:04:11 s 1 +135364.72 3 +309020.20 3130.0 C57
2020-10-25 02:14:11 S 02 48 23.782 -32 41 01.07 V C57
2020-10-25 02:14:11 s 1 +135071.12 4 +309456.56 1160.0 C57
2020-10-25 02:24:11 S 02 48 22.788 -32 41 08.81 V C57
2020-10-25 02:24:11 s 1 +134777.02 2 +309891.76 8960.0 C57
2020-10-25 02:34:11 S 02 48 21.487 -32 41 17.77 V C57
2020-10-25 02:34:11 s 1 +134482.42 0 +310325.82 6550.0 C57
2020-10-25 02:44:11 S 02 48 20.393 -32 41 24.61 V C57
2020-10-25 02:44:11 s 1 +134187.32 1 +310758.73 3920.0 C57
2020-10-25 02:54:11 S 02 48 19.274 -32 41 33.43 V C57
2020-10-25 02:54:11 s 1 +133891.72 5 +311190.50 1080.0 C57
2020-10-25 03:04:11 S 02 48 18.019 -32 41 41.06 V C57
2020-10-25 03:04:11 s 1 +133595.63 6 +311621.12 8020.0 C57
2020-10-25 03:14:11 S 02 48 16.906 -32 41 49.34 V C57
2020-10-25 03:14:11 s 1 +133299.05 6 +312050.59 4750.0 C57
2020-10-25 03:24:11 S 02 48 15.768 -32 41 56.11 V C57
2020-10-25 03:24:11 s 1 +133001.98 8 +312478.92 1270.0 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)