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
2025-07-25 22:57:20 C 18 03 51.252 -51 38 07.84 V M22
2025-07-25 23:02:04 C 18 03 50.923 -51 38 06.36 V M22
2025-07-25 23:10:50 C 18 03 50.321 -51 38 03.73 V M22
2025-07-25 23:26:07 C 18 03 49.284 -51 37 59.20 V M22
2025-08-02 21:10:27 C 17 54 39.967 -50 40 00.88 V M22
2025-08-02 21:15:42 C 17 54 39.775 -50 39 59.08 V M22
2025-08-02 21:24:53 C 17 54 39.365 -50 39 56.09 V M22
2025-08-02 21:48:09 C 17 54 38.575 -50 39 47.99 V M22
2025-08-09 00:25:55 C 17 51 24.619 -49 51 44.32 V W68
2025-08-09 00:28:34 C 17 51 24.598 -49 51 42.77 V W68
2025-08-09 00:45:14 C 17 51 24.288 -49 51 36.79 V W68
2025-08-09 00:48:37 C 17 51 24.418 -49 51 36.25 V W68
2025-08-09 00:58:16 C 17 51 24.113 -49 51 33.80 V W68
2025-08-09 00:58:55 C 17 51 24.096 -49 51 32.62 V W68
2025-08-09 01:26:16 C 17 51 23.700 -49 51 24.16 V W68
2025-08-25 11:03:12 B 17 54 22.42 -47 46 27.9 q Q73
2025-08-25 11:08:32 B 17 54 22.55 -47 46 26.1 q Q73
2025-08-25 11:13:58 B 17 54 22.67 -47 46 24.1 q Q73
2025-08-26 11:25:02 B 17 54 58.96 -47 39 10.9 q Q73
2025-08-26 11:30:36 B 17 54 59.11 -47 39 08.7 q Q73
2025-08-26 11:36:05 B 17 54 59.25 -47 39 06.7 q Q73
2025-08-30 19:39:21 C 17 58 01.730 -47 08 42.61 V M22
2025-08-30 19:43:54 C 17 58 01.850 -47 08 40.99 V M22
2025-08-30 19:51:32 C 17 58 02.093 -47 08 38.80 V M22
2025-08-30 20:07:01 C 17 58 02.561 -47 08 34.15 V M22
2025-09-14 01:08:12 C 18 11 58.349 -45 35 54.74 V W68
2025-09-14 01:15:35 C 18 11 58.673 -45 35 52.98 V W68
2025-09-14 01:19:46 C 18 11 58.798 -45 35 51.36 V W68
2025-09-14 01:39:44 C 18 11 59.786 -45 35 46.21 V W68
2025-09-17 01:13:59 C 18 15 31.618 -45 17 25.58 V W68
2025-09-17 01:18:32 C 18 15 31.829 -45 17 24.43 V W68
2025-09-17 01:26:04 C 18 15 32.239 -45 17 22.45 V W68
2025-09-17 01:41:54 C 18 15 32.988 -45 17 17.88 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)