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
2025-06-06 01:12:43 C 21 14 28.087 -34 21 23.08 V M22
2025-06-06 01:23:33 C 21 14 26.448 -34 21 51.62 V M22
2025-06-07 06:00:57 C 21 10 12.194 -35 35 54.92 V W68
2025-06-07 06:10:44 C 21 10 10.646 -35 36 20.09 V W68
2025-06-07 06:15:22 C 21 10 09.938 -35 36 32.15 V W68
2025-06-07 06:22:48 C 21 10 08.774 -35 36 51.30 V W68
2025-06-07 07:17:21 C 21 10 00.216 -35 39 12.06 V W68
2025-06-07 07:25:15 C 21 09 58.975 -35 39 32.33 V W68
2025-06-07 07:29:22 C 21 09 58.325 -35 39 42.77 V W68
2025-06-07 07:45:23 C 21 09 55.793 -35 40 23.92 V W68
2025-06-08 09:16:36 C 21 05 59.222 -36 44 44.23 V W68
2025-06-08 09:21:17 C 21 05 58.462 -36 44 55.90 V W68
2025-06-08 09:32:06 C 21 05 56.690 -36 45 22.72 V W68
2025-06-08 09:46:36 C 21 05 54.326 -36 45 58.68 V W68
2025-06-11 05:00:09 C 20 54 57.187 -39 27 09.40 V W68
2025-06-11 05:04:47 C 20 54 56.386 -39 27 20.23 V W68
2025-06-11 05:18:53 C 20 54 53.914 -39 27 53.17 V W68
2025-06-11 05:26:18 C 20 54 52.625 -39 28 10.63 V W68
2025-06-11 22:47:04 C 20 51 54.266 -40 07 38.28 V M22
2025-06-11 22:50:28 C 20 51 53.659 -40 07 45.98 V M22
2025-06-11 22:55:02 C 20 51 52.846 -40 07 56.53 V M22
2025-06-11 23:02:22 C 20 51 51.545 -40 08 13.20 V M22
2025-06-13 15:44:42 B 20 44 40.243 -41 37 14.48 Z 299
2025-06-13 16:28:50 B 20 44 32.126 -41 38 51.14 Z 299
2025-06-13 17:09:17 B 20 44 24.631 -41 40 19.20 Z 299
2025-06-18 04:44:14 C 20 24 04.89 -45 08 02.2 q Y16
2025-06-18 04:53:52 C 20 24 02.94 -45 08 19.0 q Y16
2025-06-18 05:03:33 C 20 24 00.94 -45 08 36.0 q Y16
2025-06-18 05:57:16 C 20 23 50.808 -45 10 05.84 V W68
2025-06-18 06:00:37 C 20 23 50.110 -45 10 11.78 V W68
2025-06-18 06:04:38 C 20 23 49.301 -45 10 18.80 V W68
2025-06-18 06:07:57 C 20 23 48.641 -45 10 24.60 V W68
2025-06-18 06:11:55 C 20 23 47.834 -45 10 31.51 V W68
2025-06-18 06:12:34 C 20 23 47.714 -45 10 32.63 V W68
2025-06-18 06:17:09 C 20 23 46.774 -45 10 40.66 V W68
2025-06-18 06:24:25 C 20 23 45.305 -45 10 53.29 V W68
2025-06-21 12:52:43 B 20 08 04.73 -47 15 26.4 q Q73
2025-06-21 12:57:17 B 20 08 03.77 -47 15 33.2 q Q73
2025-06-21 13:01:25 B 20 08 02.91 -47 15 39.3 q Q73
2025-06-22 02:38:22 C 20 05 16.82 -47 35 00.1 q Y16
2025-06-22 02:47:42 C 20 05 14.83 -47 35 13.7 q Y16
2025-06-22 02:57:12 C 20 05 12.84 -47 35 26.9 q Y16
2025-06-24 03:27:50 C 19 55 18.833 -48 38 22.13 V W68
2025-06-24 03:34:27 C 19 55 17.446 -48 38 30.34 V W68
2025-06-24 03:41:07 C 19 55 16.049 -48 38 38.62 V W68
2025-06-24 03:48:25 C 19 55 14.525 -48 38 47.58 V W68
2025-06-28 04:11:15 C 19 35 39.533 -50 18 26.57 V W68
2025-06-28 04:20:37 C 19 35 37.591 -50 18 34.88 V W68
2025-06-28 04:21:20 C 19 35 37.454 -50 18 35.50 V W68
2025-06-28 04:28:56 C 19 35 35.887 -50 18 42.12 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)