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
2018-11-22 01:44:39 S 05 18 59.993 -62 52 38.17 V C57
2018-11-22 01:44:39 s 1 -74697.790 0 +372952.38 4980.0 C57
2018-11-22 02:14:39 S 05 19 03.005 -62 57 35.42 V C57
2018-11-22 02:14:39 s 1 -75675.683 0 +372681.55 2440.0 C57
2018-11-22 02:44:39 S 05 19 06.060 -63 02 32.68 V C57
2018-11-22 02:44:39 s 1 -76651.708 0 +372401.88 9560.0 C57
2018-11-22 04:14:39 S 05 19 15.367 -63 17 26.20 V C57
2018-11-22 04:14:39 s 1 -79568.327 0 +371509.89 360.0 C57
2018-11-22 04:44:39 S 05 19 18.528 -63 22 24.24 V C57
2018-11-22 04:44:39 s 1 -80536.632 0 +371194.90 2420.0 C57
2018-11-22 05:44:39 S 05 19 24.634 -63 31 58.58 V C57
2018-11-22 05:44:39 s 1 -82466.026 0 +370540.33 2840.0 C57
2018-11-22 06:14:39 S 05 19 27.826 -63 36 57.13 V C57
2018-11-22 06:14:39 s 1 -83428.275 0 +370198.87 4020.0 C57
2018-11-22 06:44:39 S 05 19 31.104 -63 41 54.60 V C57
2018-11-22 06:44:39 s 1 -84388.455 0 +369848.58 4370.0 C57
2018-11-22 07:14:39 S 05 19 34.339 -63 46 52.57 V C57
2018-11-22 07:14:39 s 1 -85346.542 0 +369489.46 3760.0 C57
2018-11-22 08:44:39 S 05 19 44.285 -64 01 47.39 V C57
2018-11-22 08:44:39 s 1 -88207.987 0 +368359.09 4650.0 C57
2018-11-22 09:14:39 S 05 19 47.717 -64 06 45.61 V C57
2018-11-22 09:14:39 s 1 -89157.444 0 +367964.63 8710.0 C57
2018-11-22 10:44:39 S 05 19 58.236 -64 21 47.52 V C57
2018-11-22 10:44:39 s 1 -91992.382 0 +366728.21 80.0 C57
2018-11-22 11:14:39 S 05 20 01.735 -64 27 02.45 V C57
2018-11-22 11:14:39 s 1 -92932.797 0 +366298.38 6440.0 C57
2018-11-22 11:44:39 S 05 20 05.222 -64 32 01.14 V C57
2018-11-22 11:44:39 s 1 -93870.886 0 +365859.72 510.0 C57
2018-11-22 12:14:39 S 05 20 08.782 -64 36 59.94 V C57
2018-11-22 12:14:39 s 1 -94806.623 0 +365412.20 2130.0 C57
2018-11-22 13:44:39 S 05 20 20.184 -64 52 31.44 V C57
2018-11-22 13:44:39 s 1 -97599.454 0 +364016.54 820.0 C57
2018-11-22 15:14:39 S 05 20 31.207 -65 07 28.96 V C57
2018-11-22 15:14:39 s 1 -100370.15 6 +362541.15 2050.0 C57
2018-11-22 15:44:39 S 05 20 34.915 -65 12 35.28 V C57
2018-11-22 15:44:39 s 1 -101288.68 0 +362031.62 2320.0 C57
2018-11-22 16:14:39 S 05 20 38.928 -65 17 55.72 V C57
2018-11-22 16:14:39 s 1 -102204.63 6 +361513.22 8920.0 C57
2018-11-22 16:44:39 S 05 20 42.732 -65 22 55.20 V C57
2018-11-22 16:44:39 s 1 -103117.99 8 +360985.95 1700.0 C57
2018-11-22 20:14:39 S 05 21 11.926 -65 59 34.91 V C57
2018-11-22 20:14:39 s 1 -109436.54 3 +357046.18 1150.0 C57
2018-11-22 21:14:39 S 05 21 20.609 -66 10 20.32 V C57
2018-11-22 21:14:39 s 1 -111216.89 2 +355840.42 9080.0 C57
2018-11-22 21:44:39 S 05 21 24.706 -66 15 19.01 V C57
2018-11-22 21:44:39 s 1 -112102.76 5 +355224.16 5010.0 C57
2018-11-22 22:44:39 S 05 21 33.797 -66 26 01.00 V C57
2018-11-22 22:44:39 s 1 -113865.76 3 +353964.85 20.0 C57
2018-11-23 02:44:39 S 05 22 12.137 -67 09 12.31 V C57
2018-11-23 02:44:39 s 1 -120796.74 2 +348569.66 820.0 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)