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
2022-11-11 21:13:31 C 00 53 30.218 -34 56 05.53 V M22
2022-11-11 21:39:55 C 00 53 27.403 -34 55 55.42 V M22
2022-11-12 20:53:02 C 00 51 03.444 -34 46 41.81 V M22
2022-11-12 20:57:35 C 00 51 02.952 -34 46 39.94 V M22
2022-11-12 21:06:42 C 00 51 01.997 -34 46 36.05 V M22
2022-11-13 03:47:51 C 00 50 20.80 -34 43 48.8 V W94
2022-11-13 03:56:44 C 00 50 19.87 -34 43 45.2 V W94
2022-11-13 04:05:36 C 00 50 18.96 -34 43 41.2 V W94
2022-11-14 03:13:16 C 00 47 58.709 -34 33 27.50 V W68
2022-11-14 03:17:48 C 00 47 58.241 -34 33 25.38 V W68
2022-11-14 03:25:35 C 00 47 57.444 -34 33 21.64 V W68
2022-11-14 03:41:53 C 00 47 55.766 -34 33 14.08 V W68
2022-11-15 02:20:49 C 00 45 41.033 -34 22 29.06 V W68
2022-11-15 02:26:45 C 00 45 40.426 -34 22 26.15 V W68
2022-11-15 02:34:21 C 00 45 39.662 -34 22 22.30 V W68
2022-11-15 03:25:26 C 00 45 34.486 -34 21 56.92 V W68
2022-11-15 19:54:30 C 00 43 58.198 -34 13 38.42 V M22
2022-11-15 19:57:53 C 00 43 57.857 -34 13 36.77 V M22
2022-11-15 20:06:01 C 00 43 57.038 -34 13 32.59 V M22
2022-11-15 20:58:37 C 00 43 51.802 -34 13 05.05 V M22
2022-11-16 20:34:28 C 00 41 36.247 -34 00 30.71 V M22
2022-11-16 20:38:26 C 00 41 35.870 -34 00 28.40 V M22
2022-11-16 20:46:48 C 00 41 35.040 -34 00 23.87 V M22
2022-11-16 21:01:55 C 00 41 33.564 -34 00 15.44 V M22
2022-11-18 02:10:35 C 00 38 50.522 -33 43 41.09 V W68
2022-11-18 02:15:18 C 00 38 50.064 -33 43 38.39 V W68
2022-11-18 02:22:26 C 00 38 49.380 -33 43 34.18 V W68
2022-11-18 02:36:28 C 00 38 48.055 -33 43 25.90 V W68
2022-11-19 03:52:02 C 00 36 30.317 -33 28 08.15 V W68
2022-11-19 03:57:14 C 00 36 29.837 -33 28 04.76 V W68
2022-11-19 04:07:21 C 00 36 28.901 -33 27 58.43 V W68
2022-11-19 04:23:51 C 00 36 27.386 -33 27 47.92 V W68
2022-11-19 20:20:41 C 00 35 02.846 -33 17 43.91 V M22
2022-11-19 20:25:18 C 00 35 02.407 -33 17 40.88 V M22
2022-11-19 20:34:31 C 00 35 01.574 -33 17 34.98 V M22
2022-11-19 20:49:08 C 00 35 00.257 -33 17 25.48 V M22
2022-11-20 19:54:36 C 00 33 00.281 -33 02 16.15 V M22
2022-11-20 19:58:41 C 00 32 59.916 -33 02 13.42 V M22
2022-11-20 20:51:29 C 00 32 55.255 -33 01 37.60 V M22
2022-11-21 23:53:21 S 00 30 39.322 -32 43 02.50 L C51
2022-11-22 02:12:05 C 00 30 27.617 -32 41 24.32 V W68
2022-11-22 02:14:02 C 00 30 27.427 -32 41 22.96 V W68
2022-11-22 02:16:42 C 00 30 27.214 -32 41 20.94 V W68
2022-11-22 02:19:24 C 00 30 26.981 -32 41 19.18 V W68
2022-11-22 02:25:21 C 00 30 26.482 -32 41 14.78 V W68
2022-11-22 02:28:42 C 00 30 26.172 -32 41 12.52 V W68
2022-11-22 02:39:32 C 00 30 25.248 -32 41 04.78 V W68
2022-11-22 02:44:13 C 00 30 24.854 -32 41 01.25 V W68
2022-11-22 03:00:23 S 00 30 23.79 -32 40 49.6 L C51
2022-11-22 06:08:42 S 00 30 08.41 -32 38 37.1 L C51
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)