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
2020-10-23 17:54:11 S 02 52 05.501 -32 13 53.90 V C57
2020-10-23 17:54:11 s 1 +178886.86 3 +201486.63 8700.0 C57
2020-10-23 18:04:11 S 02 52 04.375 -32 14 01.43 V C57
2020-10-23 18:04:11 s 1 +178753.70 0 +202173.62 7450.0 C57
2020-10-23 18:14:11 S 02 52 03.216 -32 14 10.75 V C57
2020-10-23 18:14:11 s 1 +178619.23 4 +202859.14 5490.0 C57
2020-10-23 18:24:11 S 02 52 02.167 -32 14 20.18 V C57
2020-10-23 18:24:11 s 1 +178483.47 2 +203543.19 2830.0 C57
2020-10-23 18:34:11 S 02 52 01.013 -32 14 28.93 V C57
2020-10-23 18:34:11 s 1 +178346.42 3 +204225.78 9480.0 C57
2020-10-23 18:44:11 S 02 51 59.911 -32 14 36.78 V C57
2020-10-23 18:44:11 s 1 +178208.09 2 +204906.91 5440.0 C57
2020-10-23 18:54:11 S 02 51 58.771 -32 14 46.07 V C57
2020-10-23 18:54:11 s 1 +178068.48 8 +205586.57 710.0 C57
2020-10-23 19:04:11 S 02 51 57.638 -32 14 54.82 V C57
2020-10-23 19:04:11 s 1 +177927.61 5 +206264.77 5300.0 C57
2020-10-23 19:14:11 S 02 51 56.549 -32 15 02.09 V C57
2020-10-23 19:14:11 s 1 +177785.48 3 +206941.52 9200.0 C57
2020-10-23 19:24:11 S 02 51 55.466 -32 15 11.41 V C57
2020-10-23 19:24:11 s 1 +177642.09 7 +207616.81 2440.0 C57
2020-10-23 19:34:11 S 02 51 54.240 -32 15 20.66 V C57
2020-10-23 19:34:11 s 1 +177497.46 4 +208290.64 5000.0 C57
2020-10-23 19:44:11 S 02 51 53.237 -32 15 28.69 V C57
2020-10-23 19:44:11 s 1 +177351.59 1 +208963.03 6900.0 C57
2020-10-23 19:54:11 S 02 51 52.099 -32 15 37.69 V C57
2020-10-23 19:54:11 s 1 +177204.48 4 +209633.96 8130.0 C57
2020-10-23 20:04:11 S 02 51 51.031 -32 15 46.55 V C57
2020-10-23 20:04:11 s 1 +177056.15 1 +210303.45 8710.0 C57
2020-10-23 20:14:11 S 02 51 49.870 -32 15 54.86 V C57
2020-10-23 20:14:11 s 1 +176906.59 7 +210971.49 8630.0 C57
2020-10-23 20:24:11 S 02 51 48.626 -32 16 03.50 V C57
2020-10-23 20:24:11 s 1 +176755.82 9 +211638.09 7900.0 C57
2020-10-23 20:34:11 S 02 51 47.580 -32 16 12.61 V C57
2020-10-23 20:34:11 s 1 +176603.85 4 +212303.24 6520.0 C57
2020-10-23 20:44:11 S 02 51 46.488 -32 16 21.18 V C57
2020-10-23 20:44:11 s 1 +176450.67 9 +212966.96 4500.0 C57
2020-10-23 20:54:11 S 02 51 45.372 -32 16 30.14 V C57
2020-10-23 20:54:11 s 1 +176296.30 9 +213629.23 1850.0 C57
2020-10-23 21:04:11 S 02 51 44.186 -32 16 39.25 V C57
2020-10-23 21:04:11 s 1 +176140.75 0 +214290.07 8560.0 C57
2020-10-23 21:14:11 S 02 51 43.042 -32 16 46.99 V C57
2020-10-23 21:14:11 s 1 +175984.01 1 +214949.48 4640.0 C57
2020-10-23 21:24:11 S 02 51 42.014 -32 16 55.60 V C57
2020-10-23 21:24:11 s 1 +175826.09 5 +215607.45 90.0 C57
2020-10-23 21:34:11 S 02 51 40.903 -32 17 03.91 V C57
2020-10-23 21:34:11 s 1 +175667.01 0 +216264.00 4920.0 C57
2020-10-23 21:44:11 S 02 51 39.744 -32 17 12.80 V C57
2020-10-23 21:44:11 s 1 +175506.76 3 +216919.11 9130.0 C57
2020-10-23 21:54:11 S 02 51 38.621 -32 17 21.08 V C57
2020-10-23 21:54:11 s 1 +175345.35 8 +217572.80 2720.0 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)