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
2025-05-12 09:03:14 C 22 12 33.002 -05 47 46.21 V W68
2025-05-12 09:15:44 C 22 12 32.071 -05 48 23.00 V W68
2025-05-12 09:22:11 C 22 12 31.582 -05 48 42.12 V W68
2025-05-12 09:32:05 C 22 12 30.840 -05 49 11.21 V W68
2025-05-12 10:22:04 C 22 12 27.067 -05 51 38.30 V W68
2025-05-14 02:37:54 C 22 09 37.082 -07 50 09.02 V M22
2025-05-14 02:52:28 C 22 09 35.988 -07 50 52.01 V M22
2025-05-14 02:57:40 C 22 09 35.592 -07 51 07.38 V M22
2025-05-14 03:05:29 C 22 09 34.999 -07 51 30.49 V M22
2025-05-16 01:40:48 C 22 06 14.030 -10 08 58.20 V M22
2025-05-16 01:45:24 C 22 06 13.687 -10 09 11.77 V M22
2025-05-16 01:55:51 C 22 06 12.871 -10 09 42.73 V M22
2025-05-16 02:10:27 C 22 06 11.743 -10 10 26.11 V M22
2025-05-22 08:07:11 C 21 54 23.599 -17 34 25.43 V W68
2025-05-22 08:17:55 C 21 54 22.637 -17 34 57.61 V W68
2025-05-22 08:42:10 C 21 54 20.417 -17 36 09.47 V W68
2025-05-22 08:46:46 C 21 54 19.997 -17 36 23.18 V W68
2025-05-23 08:09:59 C 21 52 17.652 -18 45 36.11 V W68
2025-05-23 08:12:37 C 21 52 17.402 -18 45 43.88 V W68
2025-05-23 08:21:11 C 21 52 16.598 -18 46 09.26 V W68
2025-05-23 08:35:45 C 21 52 15.226 -18 46 52.72 V W68
2025-05-24 01:54:43 C 21 50 41.978 -19 38 03.26 V M22
2025-05-24 01:57:20 C 21 50 41.724 -19 38 11.08 V M22
2025-05-24 02:02:21 C 21 50 41.244 -19 38 25.98 V M22
2025-05-24 02:18:39 C 21 50 39.677 -19 39 14.40 V M22
2025-05-25 01:53:33 C 21 48 28.678 -20 48 50.44 V M22
2025-05-25 02:04:34 C 21 48 27.586 -20 49 23.09 V M22
2025-05-25 02:29:49 C 21 48 25.068 -20 50 37.93 V M22
2025-05-30 10:07:37 C 21 35 06.473 -27 02 38.83 V W68
2025-05-30 10:12:13 C 21 35 05.921 -27 02 51.97 V W68
2025-05-30 10:16:53 C 21 35 05.350 -27 03 05.36 V W68
2025-05-30 10:32:00 C 21 35 03.518 -27 03 48.56 V W68
2025-05-31 07:35:46 C 21 32 36.931 -28 03 55.62 V W68
2025-05-31 07:38:23 C 21 32 36.614 -28 04 03.11 V W68
2025-05-31 07:44:17 C 21 32 35.882 -28 04 20.03 V W68
2025-05-31 07:56:28 C 21 32 34.368 -28 04 54.88 V W68
2025-06-01 00:39:32 C 21 30 34.003 -28 52 14.59 V M22
2025-06-01 00:42:46 C 21 30 33.595 -28 52 23.81 V M22
2025-06-01 01:23:27 C 21 30 28.430 -28 54 19.58 V M22
2025-06-01 01:27:35 C 21 30 27.905 -28 54 31.32 V M22
2025-06-02 01:37:30 C 21 27 27.602 -30 02 20.18 V M22
2025-06-02 01:40:12 C 21 27 27.247 -30 02 27.74 V M22
2025-06-02 01:44:45 C 21 27 26.647 -30 02 40.56 V M22
2025-06-02 01:52:33 C 21 27 25.613 -30 03 02.48 V M22
2025-06-05 01:08:36 C 21 17 54.638 -33 17 43.80 V M22
2025-06-05 01:13:17 C 21 17 53.954 -33 17 56.33 V M22
2025-06-05 01:17:50 C 21 17 53.287 -33 18 08.53 V M22
2025-06-05 01:28:24 C 21 17 51.742 -33 18 36.97 V M22
2025-06-06 01:05:32 C 21 14 29.177 -34 21 04.07 V M22
2025-06-06 01:08:09 C 21 14 28.781 -34 21 10.98 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)