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
2022-08-21 03:04:52 C 02 43 03.946 -18 49 18.73 V M22
2022-08-21 03:08:51 C 02 43 03.998 -18 49 20.57 V M22
2022-08-22 06:59:39 C 02 43 36.310 -19 02 43.87 V W68
2022-08-22 07:04:16 C 02 43 36.418 -19 02 45.49 V W68
2022-08-22 07:20:23 C 02 43 36.708 -19 02 53.63 V W68
2022-08-22 07:24:55 C 02 43 36.746 -19 02 56.00 V W68
2022-08-24 01:58:43 C 02 44 21.550 -19 24 05.51 V M22
2022-08-24 02:01:19 C 02 44 21.578 -19 24 06.62 V M22
2022-08-24 02:05:53 C 02 44 21.629 -19 24 09.11 V M22
2022-08-24 02:29:58 C 02 44 22.010 -19 24 21.42 V M22
2022-08-25 13:14:47 C 02 44 54.661 -19 42 20.09 U F52
2022-08-25 13:32:16 C 02 44 54.893 -19 42 29.29 U F52
2022-08-25 13:49:40 C 02 44 55.123 -19 42 38.44 U F52
2022-08-25 14:07:09 C 02 44 55.351 -19 42 47.64 U F52
2022-08-27 07:06:51 C 02 45 28.913 -20 04 33.85 V W68
2022-08-27 07:35:15 C 02 45 29.222 -20 04 49.01 V W68
2022-08-27 07:37:50 C 02 45 29.294 -20 04 50.74 V W68
2022-08-27 07:41:54 C 02 45 29.330 -20 04 52.68 V W68
2022-08-28 01:20:55 C 02 45 42.041 -20 14 31.42 V M22
2022-08-28 01:23:31 C 02 45 42.086 -20 14 32.57 V M22
2022-08-28 02:00:42 C 02 45 42.466 -20 14 54.02 V M22
2022-08-28 02:04:47 C 02 45 42.463 -20 14 56.00 V M22
2022-08-29 14:26:10 C 02 46 05.222 -20 35 20.54 V T05
2022-08-29 15:01:07 C 02 46 05.513 -20 35 40.31 V T05
2022-08-29 15:11:41 C 02 46 05.575 -20 35 46.36 V T05
2022-08-29 15:16:05 C 02 46 05.633 -20 35 48.84 V T05
2022-08-31 09:13:39 C 02 46 26.258 -20 59 57.12 V W68
2022-08-31 09:19:30 C 02 46 26.306 -21 00 00.86 V W68
2022-08-31 09:28:10 C 02 46 26.333 -21 00 05.80 V W68
2022-08-31 09:45:12 C 02 46 26.434 -21 00 16.09 V W68
2022-08-31 10:05:32 C 02 46 26.513 -21 00 27.76 V W68
2022-09-04 06:15:21 C 02 46 49.118 -21 56 24.76 V W68
2022-09-04 06:18:00 C 02 46 49.111 -21 56 26.70 V W68
2022-09-04 06:23:11 C 02 46 49.097 -21 56 29.90 V W68
2022-09-04 06:30:59 C 02 46 49.090 -21 56 34.80 V W68
2022-09-08 11:57:39 C 02 46 34.617 -23 02 23.79 U F51
2022-09-08 12:14:40 C 02 46 34.492 -23 02 35.19 U F51
2022-09-08 12:31:35 C 02 46 34.359 -23 02 46.65 U F51
2022-09-08 12:48:20 C 02 46 34.226 -23 02 57.90 U F51
2022-09-09 00:46:51 C 02 46 29.602 -23 10 53.90 V M22
2022-09-09 00:50:10 C 02 46 29.592 -23 10 56.35 V M22
2022-09-09 00:54:09 C 02 46 29.486 -23 10 59.99 V M22
2022-09-09 01:01:27 C 02 46 29.443 -23 11 04.63 V M22
2022-09-12 04:57:22 C 02 45 45.053 -24 03 15.30 V W68
2022-09-12 05:37:28 C 02 45 44.424 -24 03 44.17 V W68
2022-09-12 06:00:17 C 02 45 44.143 -24 04 00.62 V W68
2022-09-12 06:02:53 C 02 45 44.138 -24 04 01.49 V W68
2022-09-13 00:50:08 C 02 45 28.733 -24 17 16.91 V M22
2022-09-13 00:52:44 C 02 45 28.685 -24 17 18.13 V M22
2022-09-13 00:57:16 C 02 45 28.582 -24 17 21.80 V M22
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)