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
2013-08-02 07:58:30 C 22 55 27.69 -44 39 42.3 r Y00
2013-08-02 08:07:23 C 22 55 27.08 -44 39 47.9 r Y00
2013-08-14 08:18:28 C 22 34 48.64 -47 14 59.7 r Y00
2013-08-14 08:25:24 C 22 34 48.02 -47 15 02.4 r Y00
2013-08-14 08:32:18 C 22 34 47.43 -47 15 05.2 r Y00
2013-08-24 07:01:01 C 22 15 33.35 -48 36 53.4 r Y00
2013-08-24 07:10:54 C 22 15 32.49 -48 36 56.1 r Y00
2013-08-29 05:21:20 C 22 06 01.30 -48 59 41.8 r Y00
2013-08-29 05:35:00 C 22 06 00.26 -48 59 43.6 r Y00
2013-08-29 05:45:38 C 22 05 59.42 -48 59 44.5 r Y00
2013-08-30 04:29:37 C 22 04 11.87 -49 02 45.8 r Y00
2013-08-30 04:42:34 C 22 04 10.77 -49 02 48.7 r Y00
2013-08-30 04:53:49 C 22 04 09.87 -49 02 49.5 r Y00
2013-09-10 03:41:46 C 21 45 01.54 -49 07 46.1 r Y00
2013-09-10 03:53:58 C 21 45 00.74 -49 07 45.8 r Y00
2013-09-10 04:05:31 C 21 44 59.95 -49 07 43.8 r Y00
2013-09-12 05:20:17 C 21 41 51.47 -49 03 04.1 r Y00
2013-09-12 05:30:17 C 21 41 50.72 -49 03 02.5 r Y00
2013-09-12 05:40:09 C 21 41 50.13 -49 03 02.5 r Y00
2013-09-14 04:36:55 C 21 38 59.98 -48 57 07.8 r Y00
2013-09-14 04:47:58 C 21 38 59.22 -48 57 05.1 r Y00
2013-09-14 04:59:02 C 21 38 58.52 -48 57 03.0 r Y00
2014-10-11 06:59:56 C 08 58 18.33 +09 09 44.0 r Y00
2014-10-11 07:06:59 C 08 58 20.46 +09 09 45.5 r Y00
2014-10-11 07:13:39 C 08 58 22.49 +09 09 46.3 r Y00
2014-10-21 02:20:24 C 10 14 31.01 +09 08 26.9 o C41
2014-10-21 02:28:01 C 10 14 33.59 +09 08 24.5 o C41
2014-10-21 02:29:30 C 10 14 34.05 +09 08 25.5 o C41
2014-10-21 02:35:28 C 10 14 36.13 +09 08 23.4 o C41
2014-10-21 02:36:55 C 10 14 36.59 +09 08 23.3 o C41
2014-10-21 02:42:50 C 10 14 38.50 +09 08 23.9 o C41
2014-10-24 11:55:57 C 10 42 09.97 +08 48 57.0 q 703
2014-10-24 12:03:10 C 10 42 12.38 +08 48 54.9 q 703
2014-10-24 12:10:22 C 10 42 14.80 +08 48 52.7 q 703
2014-10-24 12:17:34 C 10 42 17.24 +08 48 50.5 q 703
2014-10-28 21:34:33 C 11 17 51.38 +08 06 40.4 o C94
2014-10-28 21:36:19 C 11 17 51.99 +08 06 40.6 o C94
2014-10-28 21:38:12 C 11 17 52.55 +08 06 38.8 o C94
2014-10-28 21:39:56 C 11 17 53.30 +08 06 38.7 o C94
2014-10-28 21:52:25 C 11 17 57.31 +08 06 33.6 o C94
2014-10-30 12:23:56 C 11 30 47.66 +07 46 19.3 q 703
2014-10-30 12:25:42 C 11 30 48.23 +07 46 18.2 q 703
2014-10-30 12:27:27 C 11 30 48.83 +07 46 17.2 q 703
2014-10-30 12:29:13 C 11 30 49.37 +07 46 16.6 q 703
2015-03-22 03:16:00 C 21 15 00.47 -25 56 47.8 o K95
2015-03-22 03:22:20 C 21 15 00.96 -25 56 49.0 o K95
2015-03-22 03:28:40 C 21 15 01.48 -25 56 48.5 o K95
2015-07-04 05:19:42 C 23 03 17.21 -38 24 02.1 u 807
2015-07-04 05:24:03 C 23 03 17.13 -38 24 05.2 u 807
2015-07-04 05:28:30 C 23 03 17.03 -38 24 08.4 u 807
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)