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
2022-10-02 22:43:15 C 02 27 57.730 -30 16 26.44 V M22
2022-10-06 03:54:32 C 02 22 54.367 -31 12 52.02 V W68
2022-10-06 03:57:46 C 02 22 54.130 -31 12 54.68 V W68
2022-10-06 04:02:18 C 02 22 53.810 -31 12 57.67 V W68
2022-10-06 04:10:06 C 02 22 53.254 -31 13 03.50 V W68
2022-10-07 22:16:10 C 02 19 51.178 -31 42 45.04 V M22
2022-10-08 10:49:32 C 02 18 54.570 -31 51 32.74 U F52
2022-10-08 11:05:08 C 02 18 53.344 -31 51 43.68 U F52
2022-10-08 11:20:42 C 02 18 52.121 -31 51 54.34 U F52
2022-10-08 11:36:17 C 02 18 50.902 -31 52 05.02 U F52
2022-10-09 03:23:21 C 02 17 38.678 -32 02 44.56 V W68
2022-10-10 05:42:26 C 02 15 33.722 -32 20 22.16 V W68
2022-10-13 05:32:36 C 02 09 31.574 -33 06 00.11 V W68
2022-10-13 05:40:41 C 02 09 30.830 -33 06 05.15 V W68
2022-10-13 05:49:26 C 02 09 30.046 -33 06 10.51 V W68
2022-10-13 09:08:03 C 02 09 12.130 -33 08 09.06 V W68
2022-10-17 03:17:14 C 02 00 52.985 -33 58 58.08 V W68
2022-10-17 03:19:50 C 02 00 52.728 -33 58 59.48 V W68
2022-10-17 03:24:23 C 02 00 52.279 -33 59 01.97 V W68
2022-10-17 03:32:10 C 02 00 51.514 -33 59 05.82 V W68
2022-10-18 05:11:01 C 01 58 20.818 -34 12 03.85 V W68
2022-10-18 05:12:19 C 01 58 20.671 -34 12 04.50 V W68
2022-10-18 09:15:06 C 01 57 56.915 -34 14 09.75 U F52
2022-10-19 00:39:50 C 01 56 24.060 -34 21 24.48 V M22
2022-10-19 00:45:52 C 01 56 23.448 -34 21 27.40 V M22
2022-10-19 00:53:16 C 01 56 22.682 -34 21 30.78 V M22
2022-10-19 01:42:32 C 01 56 17.626 -34 21 53.17 V M22
2022-10-21 05:02:40 C 01 51 02.203 -34 44 23.17 V W68
2022-10-21 05:09:23 C 01 51 01.493 -34 44 25.80 V W68
2022-10-21 05:17:10 C 01 51 00.643 -34 44 28.90 V W68
2022-10-21 05:32:32 C 01 50 58.999 -34 44 35.09 V W68
2022-10-22 02:48:56 C 01 48 45.194 -34 52 55.31 V W68
2022-10-22 02:52:56 C 01 48 44.758 -34 52 56.68 V W68
2022-10-22 03:00:43 C 01 48 43.922 -34 52 59.81 V W68
2022-10-22 03:08:03 C 01 48 43.116 -34 53 02.65 V W68
2022-10-23 22:56:14 C 01 44 00.854 -35 08 19.57 V M22
2022-10-23 23:01:18 C 01 44 00.288 -35 08 21.05 V M22
2022-10-23 23:11:10 C 01 43 59.191 -35 08 24.22 V M22
2022-10-23 23:26:02 C 01 43 57.538 -35 08 28.86 V M22
2022-10-25 02:28:58 C 01 41 00.70 -35 16 36.4 V W94
2022-10-25 02:33:54 C 01 41 00.151 -35 16 36.66 V W68
2022-10-25 02:37:49 C 01 40 59.70 -35 16 39.1 V W94
2022-10-25 02:37:56 C 01 40 59.693 -35 16 37.88 V W68
2022-10-25 02:45:43 C 01 40 58.824 -35 16 40.04 V W68
2022-10-25 02:46:39 C 01 40 58.70 -35 16 41.6 V W94
2022-10-25 03:16:47 C 01 40 55.332 -35 16 48.94 V W68
2022-10-26 04:27:00 C 01 38 08.189 -35 23 23.78 V W68
2022-10-26 04:34:30 C 01 38 07.310 -35 23 25.26 V W68
2022-10-26 04:39:03 C 01 38 06.804 -35 23 26.30 V W68
2022-10-26 04:50:31 C 01 38 05.479 -35 23 29.18 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)