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
2024-09-05 06:59:28 C 02 15 46.063 -26 43 30.76 V W68
2024-09-05 07:14:08 C 02 15 45.698 -26 43 40.62 V W68
2024-09-06 00:09:12 C 02 15 25.562 -26 55 17.69 V M22
2024-09-06 00:12:34 C 02 15 25.486 -26 55 19.74 V M22
2024-09-06 00:15:50 C 02 15 25.416 -26 55 22.37 V M22
2024-09-06 00:17:08 C 02 15 25.394 -26 55 22.37 V M22
2024-09-06 00:20:28 C 02 15 25.325 -26 55 25.28 V M22
2024-09-06 00:24:24 C 02 15 25.229 -26 55 27.95 V M22
2024-09-06 00:27:00 C 02 15 25.183 -26 55 29.82 V M22
2024-09-07 00:16:30 C 02 14 54.305 -27 11 57.52 V M22
2024-09-07 00:19:07 C 02 14 54.209 -27 11 59.28 V M22
2024-09-07 00:23:09 C 02 14 54.185 -27 12 02.63 V M22
2024-09-07 00:32:48 C 02 14 53.940 -27 12 08.53 V M22
2024-09-11 03:07:59 C 02 12 16.618 -28 21 19.76 V M22
2024-09-11 03:14:00 C 02 12 16.440 -28 21 24.26 V M22
2024-09-11 03:22:37 C 02 12 16.147 -28 21 30.31 V M22
2024-09-11 03:41:24 C 02 12 15.557 -28 21 43.02 V M22
2024-09-12 06:15:43 C 02 11 25.258 -28 40 35.54 V W68
2024-09-12 06:18:59 C 02 11 25.085 -28 40 37.70 V W68
2024-09-12 06:27:29 C 02 11 24.857 -28 40 42.92 V W68
2024-09-12 06:34:56 C 02 11 24.607 -28 40 49.87 V W68
2024-09-13 08:33:02 C 02 10 31.606 -28 59 24.36 V U52
2024-09-13 08:37:14 C 02 10 31.414 -28 59 26.48 V U52
2024-09-13 08:41:23 C 02 10 31.349 -28 59 29.58 V U52
2024-09-13 23:43:11 C 02 09 58.961 -29 10 05.81 V M22
2024-09-13 23:45:51 C 02 09 58.896 -29 10 08.00 V M22
2024-09-13 23:50:27 C 02 09 58.699 -29 10 11.14 V M22
2024-09-14 00:00:39 C 02 09 58.320 -29 10 18.52 V M22
2024-09-14 22:09:02 C 02 09 08.738 -29 26 04.92 V M22
2024-09-14 22:11:42 C 02 09 08.575 -29 26 07.44 V M22
2024-09-14 22:15:42 C 02 09 08.458 -29 26 09.96 V M22
2024-09-14 22:23:08 C 02 09 08.112 -29 26 15.22 V M22
2024-09-16 05:26:01 C 02 07 53.918 -29 48 24.23 V W68
2024-09-16 05:28:37 C 02 07 53.806 -29 48 25.45 V W68
2024-09-16 05:33:52 C 02 07 53.614 -29 48 29.48 V W68
2024-09-16 05:44:26 C 02 07 53.155 -29 48 36.90 V W68
2024-09-17 04:52:04 C 02 06 54.626 -30 05 03.95 V W68
2024-09-17 04:55:31 C 02 06 54.442 -30 05 06.86 V W68
2024-09-17 05:00:05 C 02 06 54.245 -30 05 10.25 V W68
2024-09-17 05:11:23 C 02 06 53.750 -30 05 18.49 V W68
2024-09-19 12:46:02 C 02 04 20.927 -30 44 44.80 X F52
2024-09-19 13:00:16 C 02 04 20.210 -30 44 54.78 X F52
2024-09-19 13:14:30 C 02 04 19.493 -30 45 04.78 X F52
2024-09-19 13:28:44 C 02 04 18.778 -30 45 14.75 X F52
2024-09-21 05:38:53 C 02 02 18.204 -31 13 19.60 V W68
2024-09-21 05:41:30 C 02 02 18.019 -31 13 20.89 V W68
2024-09-21 05:50:11 C 02 02 17.587 -31 13 26.87 V W68
2024-09-21 05:58:05 C 02 02 17.206 -31 13 32.45 V W68
2024-09-22 22:47:59 C 02 00 05.369 -31 41 47.94 V M22
2024-09-22 22:52:04 C 02 00 05.136 -31 41 51.36 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)