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
2018-11-19 01:14:39 s 1 +73827.288 0 +315212.73 9000.0 C57
2018-11-19 01:44:39 S 05 14 47.760 -52 57 02.45 V C57
2018-11-19 01:44:39 s 1 +72857.161 0 +316319.22 4620.0 C57
2018-11-19 02:14:39 S 05 14 48.886 -53 00 39.92 V C57
2018-11-19 02:14:39 s 1 +71884.548 0 +317414.80 2130.0 C57
2018-11-19 02:44:39 S 05 14 49.891 -53 03 57.10 V C57
2018-11-19 02:44:39 s 1 +70909.497 0 +318499.52 1870.0 C57
2018-11-19 03:44:39 S 05 14 52.262 -53 11 03.48 V C57
2018-11-19 03:44:39 s 1 +68952.279 0 +320636.50 9290.0 C57
2018-11-19 04:14:39 S 05 14 53.448 -53 14 49.20 V C57
2018-11-19 04:14:39 s 1 +67970.208 0 +321688.82 7630.0 C57
2018-11-19 04:44:39 S 05 14 54.475 -53 18 15.98 V C57
2018-11-19 04:44:39 s 1 +66985.892 0 +322730.40 9460.0 C57
2018-11-19 05:14:39 S 05 14 55.687 -53 22 02.42 V C57
2018-11-19 05:14:39 s 1 +65999.378 0 +323761.27 5100.0 C57
2018-11-19 05:44:39 S 05 14 56.856 -53 25 48.22 V C57
2018-11-19 05:44:39 s 1 +65010.713 0 +324781.46 4850.0 C57
2018-11-19 06:14:39 S 05 14 57.934 -53 29 13.20 V C57
2018-11-19 06:14:39 s 1 +64019.941 0 +325791.00 9020.0 C57
2018-11-19 06:44:39 S 05 14 59.126 -53 32 58.52 V C57
2018-11-19 06:44:39 s 1 +63027.109 0 +326789.92 7900.0 C57
2018-11-19 07:14:39 S 05 15 00.180 -53 36 23.47 V C57
2018-11-19 07:14:39 s 1 +62032.260 0 +327778.26 1800.0 C57
2018-11-19 07:44:39 S 05 15 01.198 -53 40 05.81 V C57
2018-11-19 07:44:39 s 1 +61035.439 0 +328756.03 1000.0 C57
2018-11-19 08:14:39 S 05 15 02.225 -53 43 22.84 V C57
2018-11-19 08:14:39 s 1 +60036.690 0 +329723.27 5800.0 C57
2018-11-19 08:44:39 S 05 15 03.641 -53 47 17.38 V C57
2018-11-19 08:44:39 s 1 +59036.055 0 +330680.01 6470.0 C57
2018-11-19 09:14:39 S 05 15 04.610 -53 50 22.13 V C57
2018-11-19 09:14:39 s 1 +58033.577 0 +331626.26 3310.0 C57
2018-11-19 09:44:39 S 05 15 05.918 -53 54 26.75 V C57
2018-11-19 09:44:39 s 1 +57029.298 0 +332562.07 6590.0 C57
2018-11-19 10:14:39 S 05 15 06.907 -53 58 02.35 V C57
2018-11-19 10:14:39 s 1 +56023.261 0 +333487.46 6590.0 C57
2018-11-19 10:44:24 C 05 15 21.17 -53 19 05.5 q E89
2018-11-19 10:44:39 S 05 15 08.206 -54 01 34.82 V C57
2018-11-19 10:44:39 s 1 +55015.506 0 +334402.46 3580.0 C57
2018-11-19 10:48:25 C 05 15 21.44 -53 19 34.9 q E89
2018-11-19 10:52:31 C 05 15 21.68 -53 20 04.3 q E89
2018-11-19 11:14:39 S 05 15 09.398 -54 05 19.00 V C57
2018-11-19 11:14:39 s 1 +54006.074 0 +335307.09 7830.0 C57
2018-11-19 11:44:39 S 05 15 10.591 -54 09 03.74 V C57
2018-11-19 11:44:39 s 1 +52995.006 0 +336201.37 9610.0 C57
2018-11-19 12:14:39 S 05 15 11.815 -54 12 48.13 V C57
2018-11-19 12:14:39 s 1 +51982.342 0 +337085.34 9190.0 C57
2018-11-19 12:44:39 S 05 15 13.284 -54 16 32.56 V C57
2018-11-19 12:44:39 s 1 +50968.121 0 +337959.02 6820.0 C57
2018-11-19 13:14:39 S 05 15 14.246 -54 20 14.96 V C57
2018-11-19 13:14:39 s 1 +49952.382 0 +338822.44 2770.0 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)