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
2020-10-19 03:44:12 S 03 01 46.867 -30 34 55.02 V C57
2020-10-19 03:44:12 s 1 -208441.56 7 +121916.93 1170.0 C57
2020-10-19 03:54:12 S 03 01 46.118 -30 35 01.97 V C57
2020-10-19 03:54:12 s 1 -208342.40 7 +121141.75 1900.0 C57
2020-10-19 04:04:12 S 03 01 45.226 -30 35 08.88 V C57
2020-10-19 04:04:12 s 1 -208241.11 8 +120365.33 1120.0 C57
2020-10-19 04:14:12 S 03 01 44.424 -30 35 17.02 V C57
2020-10-19 04:14:12 s 1 -208137.68 9 +119587.67 8810.0 C57
2020-10-19 04:24:12 S 03 01 43.709 -30 35 22.99 V C57
2020-10-19 04:24:12 s 1 -208032.10 7 +118808.78 4970.0 C57
2020-10-19 04:34:12 S 03 01 43.238 -30 35 32.78 V C57
2020-10-19 04:34:12 s 1 -207924.36 2 +118028.65 9580.0 C57
2020-10-19 04:44:12 S 03 01 42.394 -30 35 41.32 V C57
2020-10-19 04:44:12 s 1 -207814.44 1 +117247.29 2650.0 C57
2020-10-19 04:54:12 S 03 01 41.602 -30 35 50.35 V C57
2020-10-19 04:54:12 s 1 -207702.33 3 +116464.70 4170.0 C57
2020-10-19 05:04:12 S 03 01 40.766 -30 36 00.83 V C57
2020-10-19 05:04:12 s 1 -207588.02 5 +115680.87 4120.0 C57
2020-10-19 05:14:12 S 03 01 40.310 -30 36 06.37 V C57
2020-10-19 05:14:12 s 1 -207471.50 6 +114895.81 2490.0 C57
2020-10-19 05:24:12 S 03 01 39.314 -30 36 16.45 V C57
2020-10-19 05:24:12 s 1 -207352.76 2 +114109.52 9290.0 C57
2020-10-19 12:08:39 C 03 01 38.27 -30 42 57.4 V T05
2020-10-19 12:18:33 C 03 01 37.41 -30 43 06.0 V T05
2020-10-19 12:23:50 C 03 01 36.94 -30 43 10.6 V T05
2020-10-19 13:04:34 C 03 01 33.34 -30 43 46.0 V T05
2020-10-19 13:07:53 C 03 01 33.01 -30 43 49.1 V T05
2020-10-19 13:12:30 C 03 01 32.67 -30 43 53.0 V T05
2020-10-19 14:10:41 C 03 01 27.53 -30 44 43.1 V T05
2020-10-19 20:14:12 S 03 00 33.646 -30 48 35.10 V C57
2020-10-19 20:14:12 s 1 -186066.09 0 +39472.501 8870.0 C57
2020-10-19 23:34:12 S 03 00 19.411 -30 51 18.32 V C57
2020-10-19 23:34:12 s 1 -177614.20 9 +21633.814 8310.0 C57
2020-10-22 00:24:11 S 02 56 30.739 -31 36 03.60 V C57
2020-10-22 00:24:11 s 1 +138145.06 4 -16188.593 320.0 C57
2020-10-22 00:34:11 S 02 56 29.774 -31 36 11.92 V C57
2020-10-22 00:34:11 s 1 +138834.05 2 -15186.756 1680.0 C57
2020-10-22 00:44:11 S 02 56 28.802 -31 36 21.67 V C57
2020-10-22 00:44:11 s 1 +139515.77 1 -14184.123 8210.0 C57
2020-10-22 00:54:12 S 02 56 27.686 -31 36 30.92 V C57
2020-10-22 00:54:12 s 1 +140190.27 6 -13180.755 9960.0 C57
2020-10-22 01:04:11 S 02 56 26.846 -31 36 42.12 V C57
2020-10-22 01:04:11 s 1 +140857.61 9 -12176.712 6970.0 C57
2020-10-22 01:14:12 S 02 56 25.860 -31 36 51.12 V C57
2020-10-22 01:14:12 s 1 +141517.85 4 -11172.053 9270.0 C57
2020-10-22 01:24:11 S 02 56 24.780 -31 37 00.19 V C57
2020-10-22 01:24:11 s 1 +142171.03 3 -10166.836 6910.0 C57
2020-10-22 01:34:11 S 02 56 23.753 -31 37 09.37 V C57
2020-10-22 01:34:11 s 1 +142817.21 0 - 9161.116 9940.0 C57
2020-10-22 01:44:11 S 02 56 22.978 -31 37 19.38 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)