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
2023-09-04 02:14:30 C 18 49 12.223 -49 10 05.84 V W68
2023-09-04 02:20:01 C 18 49 12.218 -49 10 03.22 V W68
2023-09-04 02:27:21 C 18 49 12.254 -49 10 00.52 V W68
2023-09-04 02:43:32 C 18 49 12.312 -49 09 54.65 V W68
2023-09-14 19:52:09 C 18 52 43.459 -47 40 48.07 V M22
2023-09-14 19:59:38 C 18 52 43.697 -47 40 45.48 V M22
2023-09-14 20:04:15 C 18 52 43.716 -47 40 42.92 V M22
2023-09-14 20:18:41 C 18 52 44.006 -47 40 38.57 V M22
2023-09-16 02:02:58 C 18 53 25.800 -47 30 31.10 V W68
2023-09-16 02:08:16 C 18 53 25.901 -47 30 29.56 V W68
2023-09-16 02:16:21 C 18 53 26.035 -47 30 27.47 V W68
2023-09-16 02:52:38 C 18 53 26.921 -47 30 14.54 V W68
2024-08-01 01:42:53 C 02 10 01.934 -19 14 30.55 V M22
2024-08-01 01:49:50 C 02 10 02.069 -19 14 33.07 V M22
2024-08-01 01:54:24 C 02 10 02.203 -19 14 34.55 V M22
2024-08-01 02:02:18 C 02 10 02.364 -19 14 37.28 V M22
2024-08-12 06:56:12 C 02 15 50.210 -21 05 51.32 V W68
2024-08-12 07:05:24 C 02 15 50.354 -21 05 55.50 V W68
2024-08-12 07:09:18 C 02 15 50.386 -21 05 57.91 V W68
2024-08-12 07:16:34 C 02 15 50.570 -21 06 00.76 V W68
2024-08-15 14:09:45 C 02 16 56.835 -21 44 34.04 X F52
2024-08-15 14:25:51 C 02 16 57.006 -21 44 42.22 X F52
2024-08-15 14:41:57 C 02 16 57.180 -21 44 50.37 X F52
2024-08-25 09:36:11 C 02 18 19.234 -23 54 43.99 V W68
2024-08-25 09:40:16 C 02 18 19.205 -23 54 46.55 V W68
2024-08-25 09:44:48 C 02 18 19.217 -23 54 49.18 V W68
2024-08-25 10:00:40 C 02 18 19.133 -23 54 58.50 V W68
2024-08-27 07:27:42 C 02 18 12.802 -24 22 41.52 V W68
2024-08-27 07:30:18 C 02 18 12.871 -24 22 41.84 V W68
2024-08-27 07:34:50 C 02 18 12.737 -24 22 46.38 V W68
2024-08-27 07:42:37 C 02 18 12.785 -24 22 49.73 V W68
2024-08-30 01:17:23 C 02 17 48.881 -25 04 06.53 V M22
2024-08-30 01:19:58 C 02 17 48.886 -25 04 08.36 V M22
2024-08-30 02:11:11 C 02 17 48.341 -25 04 41.20 V M22
2024-08-30 02:18:49 C 02 17 48.295 -25 04 46.02 V M22
2024-09-01 06:43:42 C 02 17 16.363 -25 38 49.78 V W68
2024-09-01 06:48:14 C 02 17 16.303 -25 38 52.91 V W68
2024-09-01 06:52:47 C 02 17 16.238 -25 38 56.00 V W68
2024-09-01 07:00:11 C 02 17 16.142 -25 39 00.65 V W68
2024-09-02 00:28:09 C 02 17 02.813 -25 50 33.68 V M22
2024-09-02 00:30:45 C 02 17 02.801 -25 50 35.12 V M22
2024-09-02 00:39:42 C 02 17 02.681 -25 50 40.96 V M22
2024-09-02 00:48:08 C 02 17 02.532 -25 50 47.29 V M22
2024-09-04 06:40:55 C 02 16 12.821 -26 26 56.54 V W68
2024-09-04 06:44:51 C 02 16 12.720 -26 26 59.03 V W68
2024-09-04 06:49:05 C 02 16 12.677 -26 27 02.27 V W68
2024-09-04 06:57:34 C 02 16 12.502 -26 27 08.28 V W68
2024-09-05 06:36:25 C 02 15 46.524 -26 43 14.92 V W68
2024-09-05 06:50:21 C 02 15 46.226 -26 43 24.42 V W68
2024-09-05 06:54:54 C 02 15 46.138 -26 43 26.94 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)