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
2025-01-15 06:19:47 C 00 14 07.318 -12 00 06.88 V T08
2025-01-16 01:44:44 C 00 14 56.926 -11 37 28.02 V 703
2025-01-16 01:48:04 C 00 14 57.073 -11 37 24.20 V 703
2025-01-16 01:51:25 C 00 14 57.206 -11 37 20.53 V 703
2025-01-16 01:54:45 C 00 14 57.332 -11 37 16.72 V 703
2025-01-17 06:33:59 C 00 16 11.669 -11 03 32.26 V T05
2025-01-17 06:43:55 C 00 16 12.101 -11 03 20.48 V T05
2025-01-17 06:50:03 C 00 16 12.353 -11 03 13.32 V T05
2025-01-17 18:50:53 C 00 16 44.203 -10 48 53.57 V M22
2025-01-17 18:55:28 C 00 16 44.414 -10 48 47.84 V M22
2025-01-17 19:02:00 C 00 16 44.693 -10 48 40.68 V M22
2025-01-17 19:17:40 C 00 16 45.346 -10 48 21.74 V M22
2025-01-17 19:39:19 C 00 16 46.296 -10 47 56.29 V M22
2025-01-19 01:45:46 C 00 18 07.510 -10 12 10.22 V 703
2025-01-19 01:48:46 C 00 18 07.614 -10 12 05.98 V 703
2025-01-19 01:51:45 C 00 18 07.740 -10 12 02.63 V 703
2025-01-19 01:54:44 C 00 18 07.852 -10 11 58.70 V 703
2025-01-19 05:08:07 C 00 18 16.589 -10 08 05.57 V T08
2025-01-19 05:12:44 C 00 18 16.824 -10 08 00.38 V T08
2025-01-19 05:34:40 C 00 18 17.767 -10 07 33.35 V T08
2025-01-19 05:48:01 C 00 18 18.362 -10 07 17.40 V T08
2025-01-21 01:49:26 C 00 20 20.598 -09 14 07.19 V 703
2025-01-21 01:52:46 C 00 20 20.774 -09 14 02.83 V 703
2025-01-21 01:56:05 C 00 20 20.911 -09 13 58.22 V 703
2025-01-21 01:59:24 C 00 20 21.113 -09 13 54.26 V 703
2025-01-21 05:04:36 C 00 20 29.750 -09 10 07.28 V T05
2025-01-21 05:09:12 C 00 20 29.966 -09 10 02.14 V T05
2025-01-21 05:19:02 C 00 20 30.384 -09 09 50.08 V T05
2025-01-21 05:34:09 C 00 20 31.092 -09 09 31.32 V T05
2025-02-01 02:01:28 C 00 33 47.106 -03 36 48.28 V G96
2025-02-01 02:08:15 C 00 33 47.466 -03 36 39.10 V G96
2025-02-01 02:10:06 C 00 33 47.545 -03 36 36.61 V 703
2025-02-01 02:13:26 C 00 33 47.722 -03 36 31.90 V 703
2025-02-01 02:15:00 C 00 33 47.819 -03 36 30.10 V G96
2025-02-01 02:16:46 C 00 33 47.930 -03 36 27.36 V 703
2025-02-01 02:20:06 C 00 33 48.092 -03 36 22.82 V 703
2025-02-01 02:21:47 C 00 33 48.186 -03 36 20.84 V G96
2025-02-01 17:38:00 C 00 34 38.196 -03 15 50.69 Z C23
2025-02-01 18:31:44 C 00 34 41.126 -03 14 37.61 Z C23
2025-02-01 19:06:29 C 00 34 42.996 -03 13 51.96 Z C23
2025-02-03 17:46:15 C 00 37 17.338 -02 10 15.24 Z C23
2025-02-03 18:10:11 C 00 37 18.667 -02 09 42.95 Z C23
2025-02-05 02:13:58 C 00 39 05.958 -01 25 15.71 V 703
2025-02-05 02:17:13 C 00 39 06.073 -01 25 10.56 V 703
2025-02-05 02:20:29 C 00 39 06.232 -01 25 06.06 V 703
2025-02-05 02:23:45 C 00 39 06.430 -01 25 03.00 V 703
2025-02-14 17:58:00 C 00 52 20.885 +04 14 13.16 Z C23
2025-02-14 18:16:05 C 00 52 21.931 +04 14 40.34 Z C23
2025-02-14 19:01:12 C 00 52 24.514 +04 15 49.93 Z C23
2025-02-16 02:21:49 C 00 54 12.100 +05 04 31.66 V 703
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)