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
2022-11-22 07:42:35 S 00 30 00.715 -32 37 29.89 L C51
2022-11-22 09:16:28 S 00 29 53.04 -32 36 22.8 L C51
2022-11-22 10:50:10 S 00 29 45.38 -32 35 15.7 L C51
2022-11-22 12:24:03 S 00 29 37.69 -32 34 08.6 L C51
2022-11-22 13:57:57 S 00 29 30.11 -32 33 00.6 L C51
2022-11-22 17:05:31 S 00 29 14.92 -32 30 45.4 L C51
2022-11-22 20:13:17 S 00 28 59.782 -32 28 29.35 L C51
2022-11-23 01:39:33 C 00 28 33.439 -32 24 30.67 V W68
2022-11-23 01:44:13 C 00 28 33.022 -32 24 27.40 V W68
2022-11-23 01:52:00 C 00 28 32.376 -32 24 21.49 V W68
2022-11-23 02:07:56 C 00 28 31.066 -32 24 09.68 V W68
2022-11-23 20:06:16 C 00 27 05.918 -32 10 46.74 V M22
2022-11-23 20:21:48 C 00 27 04.663 -32 10 35.08 V M22
2022-11-23 20:36:06 C 00 27 03.511 -32 10 24.10 V M22
2022-11-24 20:03:06 C 00 25 15.713 -31 52 24.28 V M22
2022-11-24 20:07:49 C 00 25 15.350 -31 52 20.68 V M22
2022-11-24 20:17:06 C 00 25 14.630 -31 52 13.12 V M22
2022-11-24 20:31:15 C 00 25 13.526 -31 52 02.03 V M22
2022-11-25 10:41:51 C 00 24 10.42 -31 40 53.6 q Q68
2022-11-25 10:46:03 C 00 24 10.19 -31 40 50.5 q Q68
2022-11-25 10:48:10 C 00 24 09.87 -31 40 49.4 q Q68
2022-11-25 12:48:38 C 00 24 00.55 -31 39 07.3 q Q68
2022-11-25 12:50:44 C 00 24 00.40 -31 39 07.9 q Q68
2022-11-25 12:52:50 C 00 24 00.18 -31 39 05.3 q Q68
2022-11-25 12:54:57 C 00 24 00.01 -31 39 03.1 q Q68
2022-11-26 01:32:51 C 00 23 05.162 -31 28 56.82 V W68
2022-11-26 01:37:24 C 00 23 04.834 -31 28 52.93 V W68
2022-11-26 01:48:26 C 00 23 03.996 -31 28 44.00 V W68
2022-11-26 02:03:42 C 00 23 02.837 -31 28 31.66 V W68
2022-11-27 19:41:04 C 00 20 08.314 -30 53 53.12 V M22
2022-11-27 19:45:02 C 00 20 08.042 -30 53 49.70 V M22
2022-11-27 19:54:21 C 00 20 07.397 -30 53 41.60 V M22
2022-11-27 20:08:29 C 00 20 06.408 -30 53 29.62 V M22
2022-11-30 01:56:14 C 00 16 37.752 -30 06 16.31 V W68
2022-11-30 02:09:28 C 00 16 36.890 -30 06 04.28 V W68
2022-11-30 02:23:46 C 00 16 35.974 -30 05 51.36 V W68
2022-12-01 01:14:16 C 00 15 13.306 -29 45 01.40 V W68
2022-12-01 01:18:45 C 00 15 13.030 -29 44 57.01 V W68
2022-12-01 01:28:18 C 00 15 12.425 -29 44 48.26 V W68
2022-12-01 01:42:33 C 00 15 11.554 -29 44 34.94 V W68
2022-12-02 19:49:28 C 00 12 47.628 -29 04 58.94 V M22
2022-12-02 19:55:27 C 00 12 47.299 -29 04 53.40 V M22
2022-12-02 20:04:03 C 00 12 46.810 -29 04 44.98 V M22
2022-12-02 20:19:04 C 00 12 45.955 -29 04 30.47 V M22
2022-12-04 01:24:05 C 00 11 13.370 -28 36 20.63 V W68
2022-12-04 01:28:39 C 00 11 13.109 -28 36 15.84 V W68
2022-12-04 01:37:06 C 00 11 12.682 -28 36 07.52 V W68
2022-12-04 02:10:01 C 00 11 10.891 -28 35 34.94 V W68
2022-12-05 02:23:45 C 00 09 57.758 -28 11 36.31 V W68
2022-12-05 02:28:20 C 00 09 57.526 -28 11 31.49 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)