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
1994-07-11 06:50:04 C 17 03 56.72 -48 47 26.9 809
1994-07-25 12:30:24 C 16 55 42.88 -47 30 42.9 413
1994-07-25 12:33:30 C 16 55 42.88 -47 30 42.1 413
1994-09-18 12:09:09 C 17 53 24.76 -43 21 27.6 413
1995-06-19 18:43:59 C 01 09 55.86 -19 28 15.3 413
1995-06-19 18:48:36 C 01 09 56.04 -19 28 15.7 413
1995-07-06 19:56:06 C 01 25 56.17 -20 30 21.9 413
1995-07-06 20:00:59 C 01 25 56.38 -20 30 23.4 413
1995-07-20 16:10:32 C 01 35 52.74 -22 04 20.2 413
1995-07-20 16:15:08 C 01 35 52.85 -22 04 21.8 413
1995-08-06 18:07:29 C 01 42 43.82 -25 00 24.5 413
1995-08-06 18:12:11 C 01 42 43.83 -25 00 27.1 413
1995-09-07 18:16:06 C 01 30 34.05 -32 56 22.5 413
1995-09-07 18:20:09 C 01 30 33.85 -32 56 25.6 413
1995-10-20 13:48:03 C 00 17 58.31 -39 13 48.9 413
1995-10-20 13:53:24 C 00 17 57.88 -39 13 48.4 413
1995-10-30 13:53:55 C 00 01 18.69 -38 25 44.5 413
1995-10-30 13:56:53 C 00 01 18.50 -38 25 43.3 413
1996-01-03 11:02:14 C 23 53 05.38 -21 31 49.9 z 413
1996-01-03 11:08:01 C 23 53 05.60 -21 31 44.7 z 413
1996-06-15 01:35:54 C 10 51 05.31 +21 55 48.6 z 801
1996-06-15 01:38:06 C 10 51 06.48 +21 55 32.4 z 801
1996-06-21 03:50:53 C 11 58 57.67 +04 58 18.6 i 711
1996-06-21 03:54:46 C 11 58 59.25 +04 57 52.4 i 711
1996-06-25 02:58:27 C 12 34 53.88 -04 49 38.1 i 711
1996-06-25 03:02:11 C 12 34 55.17 -04 49 58.8 i 711
1996-06-26 02:54:29 C 12 42 58.03 -06 59 20.6 i 711
1996-06-26 03:00:30 C 12 42 59.97 -06 59 52.2 i 711
1996-07-18 10:38:33 C 14 38 46.47 -30 59 58.0 413
1996-07-18 10:40:53 C 14 38 46.80 -31 00 00.8 413
1997-08-30 09:47:25 C 01 13 32.14 -33 46 29.7 z 711
1997-08-30 09:58:45 C 01 13 31.71 -33 46 37.2 z 711
1997-08-31 09:56:21 C 01 12 34.77 -34 02 09.6 z 711
1997-08-31 10:08:00 C 01 12 34.28 -34 02 16.9 z 711
1999-07-02 17:45:29 C 00 56 53.27 -24 04 03.0 413
1999-07-02 17:50:26 C 00 56 53.39 -24 04 04.4 413
1999-08-01 19:08:47 C 01 07 38.74 -29 08 34.3 413
1999-08-31 15:19:39 C 00 50 24.25 -36 31 08.4 413
1999-08-31 15:21:59 C 00 50 24.14 -36 31 09.9 413
1999-09-07 16:23:53 C 00 41 18.74 -38 09 58.8 z 428
1999-09-07 16:30:21 C 00 41 18.41 -38 10 01.8 z 428
1999-12-04 09:38:24 C 23 11 16.07 -32 38 26.2 z 428
1999-12-04 09:47:07 C 23 11 16.19 -32 38 20.5 z 428
2001-07-24 16:48:33 C 00 51 37.74 -29 48 34.5 474
2001-07-24 16:52:14 C 00 51 37.74 -29 48 36.5 474
2001-07-24 16:55:55 C 00 51 37.74 -29 48 38.4 474
2001-07-24 16:59:37 C 00 51 37.75 -29 48 40.4 474
2001-10-19 02:28:45 C 23 10 50.43 -42 02 10.2 d 808
2003-07-19 07:14:43 C 00 36 21.60 -30 39 33.2 m 859
2003-07-19 07:30:21 C 00 36 21.49 -30 39 39.9 m 859
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)