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
2025-06-30 04:41:10 C 19 26 03.142 -50 56 30.01 V W68
2025-06-30 04:45:07 C 19 26 02.338 -50 56 32.86 V W68
2025-06-30 04:49:02 C 19 26 01.550 -50 56 35.59 V W68
2025-06-30 04:56:18 C 19 26 00.082 -50 56 40.81 V W68
2025-06-30 23:59:34 C 19 22 19.25 -51 09 25.6 834
2025-07-01 00:38:55 C 19 22 11.54 -51 09 53.0 834
2025-07-02 01:48:38 B 19 17 23.14 -51 25 16.0 X X76
2025-07-02 01:53:29 B 19 17 22.22 -51 25 18.8 X X76
2025-07-02 01:57:58 B 19 17 21.34 -51 25 21.4 X X76
2025-07-04 02:28:53 B 19 08 22.66 -51 49 34.8 X X76
2025-07-04 02:33:00 B 19 08 21.55 -51 49 35.7 X X76
2025-07-04 02:38:30 B 19 08 20.76 -51 49 40.1 X X76
2025-07-04 05:42:21 C 19 07 46.891 -51 50 53.77 V W68
2025-07-04 06:37:44 C 19 07 36.598 -51 51 16.49 V W68
2025-07-04 07:18:41 C 19 07 28.999 -51 51 32.80 V W68
2025-07-05 09:58:18 C 19 02 44.779 -52 01 43.75 V W68
2025-07-05 10:03:04 C 19 02 43.966 -52 01 45.23 V W68
2025-07-05 10:27:22 C 19 02 39.718 -52 01 52.46 V W68
2025-07-05 10:36:05 C 19 02 38.177 -52 01 55.70 V W68
2025-07-08 04:45:28 C 18 51 33.386 -52 20 08.02 V W68
2025-07-08 04:50:56 C 18 51 32.496 -52 20 09.10 V W68
2025-07-08 05:41:54 C 18 51 24.019 -52 20 18.74 V W68
2025-07-08 05:51:03 C 18 51 22.505 -52 20 20.47 V W68
2025-07-15 00:23:49 C 18 28 20.57 -52 28 50.0 q Y16
2025-07-15 00:33:48 C 18 28 19.34 -52 28 49.5 q Y16
2025-07-15 00:43:53 C 18 28 18.01 -52 28 49.3 q Y16
2025-07-15 00:55:21 B 18 28 16.78 -52 28 49.8 X X76
2025-07-15 01:01:45 B 18 28 15.99 -52 28 49.7 X X76
2025-07-15 01:07:06 B 18 28 15.35 -52 28 49.3 X X76
2025-07-16 03:29:00 B 18 25 05.78 -52 26 26.6 X X07
2025-07-16 03:43:13 B 18 25 04.11 -52 26 25.1 X X07
2025-07-16 03:56:38 B 18 25 02.46 -52 26 23.8 X X07
2025-07-16 04:09:57 B 18 25 00.86 -52 26 22.0 X X07
2025-07-16 04:18:22 C 18 24 59.846 -52 26 21.44 V W68
2025-07-16 04:23:06 C 18 24 59.280 -52 26 20.83 V W68
2025-07-16 04:33:57 C 18 24 57.960 -52 26 19.64 V W68
2025-07-16 04:49:19 C 18 24 56.117 -52 26 17.88 V W68
2025-07-21 11:10:52 B 18 12 05.81 -52 05 12.8 q Q73
2025-07-21 11:16:02 B 18 12 05.32 -52 05 11.6 q Q73
2025-07-21 11:21:12 B 18 12 04.85 -52 05 10.5 q Q73
2025-07-22 02:27:45 C 18 10 46.26 -52 01 49.2 q Y16
2025-07-22 02:39:42 C 18 10 45.24 -52 01 46.0 q Y16
2025-07-22 02:51:12 C 18 10 44.25 -52 01 43.1 q Y16
2025-07-24 03:39:20 C 18 06 52.766 -51 49 46.56 V W68
2025-07-24 03:47:01 C 18 06 52.178 -51 49 44.51 V W68
2025-07-24 03:52:20 C 18 06 51.785 -51 49 43.10 V W68
2025-07-24 04:06:54 C 18 06 50.635 -51 49 39.36 V W68
2025-07-24 10:31:46 B 18 06 23.08 -51 47 58.7 q Q73
2025-07-24 10:36:56 B 18 06 22.65 -51 47 57.3 q Q73
2025-07-24 10:42:06 B 18 06 22.28 -51 47 56.1 q Q73
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)