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
2018-11-15 13:12:27 C 05 10 23.48 -44 19 25.2 U T05
2018-11-15 13:16:25 C 05 10 23.59 -44 19 43.6 U T05
2018-11-15 13:26:22 C 05 10 23.82 -44 20 29.9 U T05
2018-11-15 13:40:19 C 05 10 24.16 -44 21 34.2 U T05
2018-11-15 18:14:39 S 05 11 48.866 -44 47 50.71 V C57
2018-11-15 18:14:39 s 1 +116207.70 0 -21639.023 1730.0 C57
2018-11-15 19:14:39 S 05 11 52.620 -44 53 20.36 V C57
2018-11-15 19:14:39 s 1 +119438.11 3 -15571.147 9310.0 C57
2018-11-15 19:44:39 S 05 11 54.403 -44 56 00.78 V C57
2018-11-15 19:44:39 s 1 +120964.68 7 -12524.820 8180.0 C57
2018-11-15 20:14:39 S 05 11 56.215 -44 58 46.02 V C57
2018-11-15 20:14:39 s 1 +122433.92 4 - 9472.551 1020.0 C57
2018-11-15 22:14:39 S 05 12 03.490 -45 10 03.22 V C57
2018-11-15 22:14:39 s 1 +127763.45 6 + 2765.395 4360.0 C57
2018-11-15 22:44:39 S 05 12 05.206 -45 12 53.39 V C57
2018-11-15 22:44:39 s 1 +128965.34 6 + 5825.303 1590.0 C57
2018-11-15 23:14:39 S 05 12 06.893 -45 15 43.78 V C57
2018-11-15 23:14:39 s 1 +130117.52 0 + 8882.969 6750.0 C57
2018-11-16 00:14:39 S 05 12 10.130 -45 21 29.95 V C57
2018-11-16 00:14:39 s 1 +132277.51 0 +14987.377 3470.0 C57
2018-11-16 01:14:39 S 05 12 12.994 -45 26 35.12 V C57
2018-11-16 01:14:39 s 1 +134252.77 4 +21070.931 9130.0 C57
2018-11-16 01:44:39 S 05 12 14.762 -45 29 32.42 V C57
2018-11-16 01:44:39 s 1 +135173.94 5 +24102.769 7760.0 C57
2018-11-16 02:14:39 S 05 12 16.322 -45 32 22.34 V C57
2018-11-16 02:14:39 s 1 +136052.25 9 +27126.967 7390.0 C57
2018-11-16 02:44:39 S 05 12 17.866 -45 35 12.12 V C57
2018-11-16 02:44:39 s 1 +136888.76 9 +30142.832 3290.0 C57
2018-11-16 03:14:39 S 05 12 19.349 -45 38 01.79 V C57
2018-11-16 03:14:39 s 1 +137684.50 4 +33149.721 620.0 C57
2018-11-16 03:44:39 S 05 12 20.501 -45 40 29.46 V C57
2018-11-16 03:44:39 s 1 +138440.46 7 +36147.037 4470.0 C57
2018-11-16 04:44:39 S 05 12 23.582 -45 46 14.09 V C57
2018-11-16 04:44:39 s 1 +139836.95 8 +42110.776 1550.0 C57
2018-11-16 05:14:39 S 05 12 24.986 -45 49 18.01 V C57
2018-11-16 05:14:39 s 1 +140479.36 4 +45076.211 4450.0 C57
2018-11-16 05:44:39 S 05 12 26.354 -45 51 58.32 V C57
2018-11-16 05:44:39 s 1 +141085.75 3 +48030.093 3220.0 C57
2018-11-16 14:00:04 C 05 11 25.09 -46 21 15.7 q E89
2018-11-16 14:05:17 C 05 11 25.25 -46 21 43.2 q E89
2018-11-16 14:09:29 C 05 11 25.35 -46 22 04.6 q E89
2018-11-18 01:41:13 C 05 13 14.00 -49 41 47.0 q 834
2018-11-18 02:27:38 C 05 13 16.02 -49 46 34.2 q 834
2018-11-18 06:14:39 S 05 14 08.138 -50 44 32.39 V C57
2018-11-18 06:14:39 s 1 +108283.46 8 +264737.83 1430.0 C57
2018-11-18 06:44:39 S 05 14 09.067 -50 47 46.21 V C57
2018-11-18 06:44:39 s 1 +107452.29 7 +266285.81 8220.0 C57
2018-11-18 07:14:39 S 05 14 10.277 -50 51 16.24 V C57
2018-11-18 07:14:39 s 1 +106616.13 5 +267821.40 450.0 C57
2018-11-18 08:14:39 S 05 14 12.259 -50 57 55.91 V C57
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)