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 09:04:11 s 1 +183874.19 3 +162923.48 9170.0 C57
2020-10-23 09:14:11 S 02 53 03.103 -32 06 18.79 V C57
2020-10-23 09:14:11 s 1 +183821.71 4 +163691.04 2470.0 C57
2020-10-23 09:24:11 S 02 53 02.040 -32 06 27.97 V C57
2020-10-23 09:24:11 s 1 +183767.47 0 +164457.05 4780.0 C57
2020-10-23 09:34:11 S 02 53 00.898 -32 06 36.14 V C57
2020-10-23 09:34:11 s 1 +183711.47 2 +165221.48 6100.0 C57
2020-10-23 09:44:11 S 02 52 59.863 -32 06 45.86 V C57
2020-10-23 09:44:11 s 1 +183653.73 1 +165984.35 6450.0 C57
2020-10-23 09:54:11 S 02 52 58.759 -32 06 53.93 V C57
2020-10-23 09:54:11 s 1 +183594.25 7 +166745.66 5820.0 C57
2020-10-23 10:04:11 S 02 52 57.641 -32 07 04.15 V C57
2020-10-23 10:04:11 s 1 +183533.06 1 +167505.42 4230.0 C57
2020-10-23 10:14:11 S 02 52 56.503 -32 07 11.75 V C57
2020-10-23 10:14:11 s 1 +183470.15 3 +168263.61 1680.0 C57
2020-10-23 10:24:11 S 02 52 55.418 -32 07 20.03 V C57
2020-10-23 10:24:11 s 1 +183405.54 3 +169020.24 8180.0 C57
2020-10-23 10:34:11 S 02 52 54.329 -32 07 29.89 V C57
2020-10-23 10:34:11 s 1 +183339.24 1 +169775.32 3740.0 C57
2020-10-23 10:44:11 S 02 52 53.201 -32 07 38.28 V C57
2020-10-23 10:44:11 s 1 +183271.25 6 +170528.85 8350.0 C57
2020-10-23 10:54:11 S 02 52 52.152 -32 07 47.35 V C57
2020-10-23 10:54:11 s 1 +183201.60 0 +171280.82 2030.0 C57
2020-10-23 11:04:11 S 02 52 50.966 -32 07 55.70 V C57
2020-10-23 11:04:11 s 1 +183130.28 1 +172031.25 4780.0 C57
2020-10-23 11:14:11 S 02 52 49.865 -32 08 04.85 V C57
2020-10-23 11:14:11 s 1 +183057.31 0 +172780.13 6620.0 C57
2020-10-23 11:24:11 S 02 52 48.838 -32 08 12.80 V C57
2020-10-23 11:24:11 s 1 +182982.69 6 +173527.46 7530.0 C57
2020-10-23 11:41:50 C 02 52 47.03 -32 04 29.9 V T05
2020-10-23 11:54:11 S 02 52 45.466 -32 08 41.17 V C57
2020-10-23 11:54:11 s 1 +182749.09 4 +175760.19 4850.0 C57
2020-10-23 12:04:11 S 02 52 44.417 -32 08 48.08 V C57
2020-10-23 12:04:11 s 1 +182668.00 4 +176501.35 2170.0 C57
2020-10-23 12:14:11 S 02 52 43.315 -32 08 56.87 V C57
2020-10-23 12:14:11 s 1 +182585.31 9 +177240.97 8600.0 C57
2020-10-23 12:24:11 S 02 52 42.228 -32 09 06.08 V C57
2020-10-23 12:24:11 s 1 +182501.04 7 +177979.06 4150.0 C57
2020-10-23 12:32:09 C 02 52 41.76 -32 05 11.0 V T05
2020-10-23 12:34:11 S 02 52 41.050 -32 09 15.12 V C57
2020-10-23 12:34:11 s 1 +182415.19 9 +178715.62 8820.0 C57
2020-10-23 12:36:46 C 02 52 41.27 -32 05 14.8 V T05
2020-10-23 12:44:11 S 02 52 39.936 -32 09 23.15 V C57
2020-10-23 12:44:11 s 1 +182327.78 3 +179450.64 2630.0 C57
2020-10-23 12:54:11 S 02 52 38.714 -32 09 32.51 V C57
2020-10-23 12:54:11 s 1 +182238.80 8 +180184.13 5570.0 C57
2020-10-23 13:04:11 S 02 52 37.752 -32 09 41.44 V C57
2020-10-23 13:04:11 s 1 +182148.28 2 +180916.10 7660.0 C57
2020-10-23 13:14:11 S 02 52 36.665 -32 09 49.75 V C57
2020-10-23 13:14:11 s 1 +182056.21 6 +181646.53 8890.0 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)