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
2018-11-18 08:14:39 s 1 +104929.17 8 +270855.58 3450.0 C57
2018-11-18 09:14:39 S 05 14 14.218 -51 04 34.54 V C57
2018-11-18 09:14:39 s 1 +103223.27 3 +273840.75 4810.0 C57
2018-11-18 09:44:39 S 05 14 15.151 -51 07 43.32 V C57
2018-11-18 09:44:39 s 1 +102363.42 0 +275315.06 2460.0 C57
2018-11-18 10:14:39 S 05 14 16.186 -51 11 12.52 V C57
2018-11-18 10:14:39 s 1 +101499.07 1 +276777.26 8780.0 C57
2018-11-18 10:44:39 S 05 14 17.112 -51 14 21.41 V C57
2018-11-18 10:44:39 s 1 +100630.30 7 +278227.37 4280.0 C57
2018-11-18 12:14:39 S 05 14 20.117 -51 24 28.19 V C57
2018-11-18 12:14:39 s 1 +97998.279 0 +282505.72 910.0 C57
2018-11-18 13:14:39 S 05 14 22.090 -51 31 05.52 V C57
2018-11-18 13:14:39 s 1 +96222.892 0 +285298.37 6950.0 C57
2018-11-18 13:44:39 S 05 14 22.951 -51 34 38.06 V C57
2018-11-18 13:44:39 s 1 +95329.205 0 +286676.94 7880.0 C57
2018-11-18 14:14:39 S 05 14 24.022 -51 37 43.18 V C57
2018-11-18 14:14:39 s 1 +94431.616 0 +288043.74 1360.0 C57
2018-11-18 14:44:39 S 05 14 25.073 -51 41 12.59 V C57
2018-11-18 14:44:39 s 1 +93530.194 0 +289398.80 7850.0 C57
2018-11-18 16:14:39 S 05 14 28.061 -51 51 18.32 V C57
2018-11-18 16:14:39 s 1 +90803.609 0 +293393.98 9820.0 C57
2018-11-18 16:44:39 S 05 14 29.004 -51 54 54.83 V C57
2018-11-18 16:44:39 s 1 +89887.527 0 +294702.50 2760.0 C57
2018-11-18 17:14:39 S 05 14 30.034 -51 58 20.10 V C57
2018-11-18 17:14:39 s 1 +88967.943 0 +295999.49 880.0 C57
2018-11-18 18:14:39 S 05 14 32.203 -52 05 10.28 V C57
2018-11-18 18:14:39 s 1 +87118.519 0 +298559.00 4330.0 C57
2018-11-18 19:44:39 S 05 14 35.225 -52 15 13.18 V C57
2018-11-18 19:44:39 s 1 +84319.669 0 +302312.71 3600.0 C57
2018-11-18 20:14:39 S 05 14 36.286 -52 18 41.00 V C57
2018-11-18 20:14:39 s 1 +83380.368 0 +303541.28 1370.0 C57
2018-11-18 20:44:39 S 05 14 37.339 -52 22 08.08 V C57
2018-11-18 20:44:39 s 1 +82437.989 0 +304758.57 7120.0 C57
2018-11-18 21:14:39 S 05 14 38.338 -52 25 36.05 V C57
2018-11-18 21:14:39 s 1 +81492.590 0 +305964.63 1230.0 C57
2018-11-18 21:44:39 S 05 14 39.422 -52 29 03.98 V C57
2018-11-18 21:44:39 s 1 +80544.226 0 +307159.48 4080.0 C57
2018-11-18 22:14:39 S 05 14 40.507 -52 33 05.94 V C57
2018-11-18 22:14:39 s 1 +79592.955 0 +308343.17 6030.0 C57
2018-11-18 22:44:39 S 05 14 41.614 -52 36 19.08 V C57
2018-11-18 22:44:39 s 1 +78638.830 0 +309515.72 7450.0 C57
2018-11-18 23:14:39 S 05 14 42.490 -52 39 41.22 V C57
2018-11-18 23:14:39 s 1 +77681.907 0 +310677.18 8690.0 C57
2018-11-18 23:44:39 S 05 14 43.454 -52 42 52.45 V C57
2018-11-18 23:44:39 s 1 +76722.238 0 +311827.58 130.0 C57
2018-11-19 00:14:39 S 05 14 44.750 -52 46 39.25 V C57
2018-11-19 00:14:39 s 1 +75759.878 0 +312966.95 2090.0 C57
2018-11-19 00:44:39 S 05 14 45.823 -52 50 05.64 V C57
2018-11-19 00:44:39 s 1 +74794.877 0 +314095.32 4930.0 C57
2018-11-19 01:14:39 S 05 14 46.891 -52 53 32.14 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)