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
2022-09-13 01:38:07 C 02 45 27.943 -24 17 50.89 V M22
2022-09-14 00:27:26 C 02 45 07.039 -24 34 05.48 V M22
2022-09-14 00:30:02 C 02 45 06.986 -24 34 07.46 V M22
2022-09-14 00:35:16 C 02 45 06.905 -24 34 11.03 V M22
2022-09-14 01:14:29 C 02 45 06.221 -24 34 39.47 V M22
2022-09-15 14:12:26 C 02 44 26.306 -25 01 26.08 U F51
2022-09-15 14:30:01 C 02 44 25.926 -25 01 38.81 U F51
2022-09-15 14:47:23 C 02 44 25.550 -25 01 51.39 U F51
2022-09-15 15:04:52 C 02 44 25.173 -25 02 04.02 U F51
2022-09-17 12:18:11 C 02 43 27.041 -25 35 15.55 U F51
2022-09-17 12:36:51 C 02 43 26.561 -25 35 29.43 U F51
2022-09-17 13:06:47 C 02 43 25.794 -25 35 51.64 U F51
2022-09-17 13:25:28 C 02 43 25.312 -25 36 05.49 U F51
2022-09-18 08:58:28 C 02 42 56.689 -25 50 37.39 V 703
2022-09-18 09:06:23 C 02 42 56.452 -25 50 43.37 V 703
2022-09-18 09:14:17 C 02 42 56.250 -25 50 49.60 V 703
2022-09-18 09:22:11 C 02 42 56.038 -25 50 55.32 V 703
2022-09-20 06:03:23 C 02 41 42.264 -26 24 19.58 V W68
2022-09-20 06:08:09 C 02 41 42.084 -26 24 23.08 V W68
2022-09-20 06:12:47 C 02 41 41.952 -26 24 26.68 V W68
2022-09-20 06:21:15 C 02 41 41.633 -26 24 33.26 V W68
2022-09-20 12:33:02 C 02 41 30.480 -26 29 19.80 U F51
2022-09-20 13:04:29 C 02 41 29.460 -26 29 43.62 U F51
2022-09-20 13:20:24 C 02 41 28.942 -26 29 55.63 U F51
2022-09-23 05:24:32 C 02 39 20.580 -27 18 34.09 V W68
2022-09-23 05:27:46 C 02 39 20.474 -27 18 36.83 V W68
2022-09-23 05:34:45 C 02 39 20.203 -27 18 42.19 V W68
2022-09-23 05:44:48 C 02 39 19.802 -27 18 50.04 V W68
2022-09-24 06:15:41 C 02 38 24.005 -27 37 36.55 V W68
2022-09-24 06:19:11 C 02 38 23.875 -27 37 39.47 V W68
2022-09-24 06:23:44 C 02 38 23.700 -27 37 43.07 V W68
2022-09-24 07:11:43 C 02 38 21.703 -27 38 19.82 V W68
2022-09-25 09:42:33 C 02 37 17.173 -27 58 47.78 V 703
2022-09-25 09:51:18 C 02 37 16.784 -27 58 54.37 V 703
2022-09-25 10:00:02 C 02 37 16.410 -27 59 01.32 V 703
2022-09-25 10:08:46 C 02 37 16.000 -27 59 07.91 V 703
2022-09-25 11:43:36 C 02 37 12.224 -28 00 19.69 U F52
2022-09-25 12:15:12 C 02 37 10.819 -28 00 44.05 U F52
2022-09-25 12:31:00 C 02 37 10.116 -28 00 56.26 U F52
2022-10-01 05:20:28 C 02 30 24.298 -29 45 24.77 V W68
2022-10-01 05:23:04 C 02 30 24.142 -29 45 26.78 V W68
2022-10-01 05:29:57 C 02 30 23.712 -29 45 31.93 V W68
2022-10-01 06:02:47 C 02 30 21.780 -29 45 56.74 V W68
2022-10-01 11:18:09 C 02 30 03.836 -29 50 00.76 U F52
2022-10-01 11:33:39 C 02 30 02.910 -29 50 12.54 U F52
2022-10-01 11:49:15 C 02 30 01.972 -29 50 24.35 U F52
2022-10-02 05:20:45 C 02 29 00.600 -30 03 28.19 V W68
2022-10-02 05:24:02 C 02 29 00.394 -30 03 30.49 V W68
2022-10-02 05:28:35 C 02 29 00.115 -30 03 34.13 V W68
2022-10-02 05:36:22 C 02 28 59.628 -30 03 40.03 V W68
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)