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
2016-09-19 15:12:24 C 05 29 08.36 -03 20 20.7 L T05
2016-09-23 09:30:30 S 05 40 10.037 -03 25 37.49 L C51
2016-09-25 03:05:54 C 05 45 32.00 -03 28 17.7 q 160
2016-09-25 03:06:29 C 05 45 32.12 -03 28 17.4 V 160
2016-09-25 03:08:09 C 05 45 32.30 -03 28 18.3 q 160
2016-09-25 03:09:03 C 05 45 32.43 -03 28 17.6 V 160
2016-09-25 03:11:20 C 05 45 32.72 -03 28 18.2 V 160
2016-09-25 03:12:16 C 05 45 32.87 -03 28 17.7 q 160
2016-09-26 03:34:32 C 05 48 46.71 -03 29 47.4 V 160
2016-09-26 03:36:51 C 05 48 47.01 -03 29 47.1 V 160
2016-09-26 03:39:09 C 05 48 47.30 -03 29 47.8 V 160
2016-10-04 02:37:09 C 06 16 56.88 -03 40 32.8 V 160
2016-10-04 02:39:06 C 06 16 57.21 -03 40 32.7 V 160
2016-10-04 02:41:04 C 06 16 57.51 -03 40 32.5 V 160
2016-10-06 17:11:50 C 06 27 32.39 -03 42 57.3 q Q60
2016-10-06 17:25:42 C 06 27 34.82 -03 42 57.4 q Q60
2016-10-06 17:39:34 C 06 27 37.20 -03 42 57.5 q Q60
2016-10-20 13:57:14 S 07 42 07.346 -03 36 18.94 L C51
2016-10-20 17:05:44 S 07 43 01.428 -03 35 59.14 L C51
2016-10-20 20:14:25 S 07 43 55.850 -03 35 38.87 L C51
2016-10-20 23:23:06 S 07 44 50.539 -03 35 17.88 L C51
2016-10-21 00:57:22 S 07 45 17.966 -03 35 07.55 L C51
2016-10-21 04:06:03 S 07 46 13.078 -03 34 45.95 L C51
2016-10-21 05:40:18 S 07 46 40.702 -03 34 35.00 L C51
2016-10-21 07:14:44 S 07 47 08.474 -03 34 23.99 L C51
2016-10-21 08:48:59 S 07 47 36.254 -03 34 13.04 L C51
2016-10-21 10:23:25 S 07 48 04.152 -03 34 01.70 L C51
2016-10-21 13:31:55 S 07 49 00.050 -03 33 39.17 L C51
2016-10-21 16:40:36 S 07 49 56.282 -03 33 15.66 L C51
2016-10-21 19:49:17 S 07 50 52.819 -03 32 52.12 L C51
2016-10-21 22:57:58 S 07 51 49.637 -03 32 27.96 L C51
2016-10-27 05:46:59 C 08 34 14.74 -03 09 32.6 o Z22
2016-10-27 05:50:45 C 08 34 16.14 -03 09 32.0 o Z22
2016-10-27 06:03:34 C 08 34 20.75 -03 09 29.0 o Z22
2016-10-27 06:07:11 C 08 34 22.05 -03 09 28.5 o Z22
2016-10-27 08:06:20 C 08 35 06.43 -03 08 39.8 o W92
2016-10-27 08:25:11 C 08 35 13.32 -03 08 35.4 o W92
2016-10-27 08:40:36 C 08 35 18.95 -03 08 31.3 o W92
2016-10-31 11:59:07 C 09 14 40.84 -02 39 59.3 R G45
2016-10-31 12:05:58 C 09 14 43.71 -02 39 56.9 R G45
2016-10-31 12:13:15 C 09 14 46.76 -02 39 54.5 R G45
2016-10-31 12:20:21 C 09 14 49.71 -02 39 52.1 R G45
2016-10-31 12:27:36 C 09 14 52.73 -02 39 49.7 R G45
2016-11-15 11:28:20 C 12 01 04.08 -00 19 20.3 q H15
2016-11-15 11:41:59 C 12 01 10.11 -00 19 16.5 q H15
2016-11-15 11:55:46 C 12 01 16.24 -00 19 12.1 q H15
2017-06-30 00:51:48 C 22 44 53.06 -39 16 00.7 o K95
2017-06-30 01:10:55 C 22 44 52.53 -39 16 16.1 o K95
2017-09-14 02:00:04 C 20 39 56.07 -49 44 18.8 o W92
2017-09-14 03:01:24 C 20 39 53.58 -49 44 00.5 o W92
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)