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
2020-10-25 11:34:11 S 02 47 18.158 -32 48 29.99 V C57
2020-10-25 11:34:11 s 1 +117892.06 3 +332090.71 9590.0 C57
2020-10-25 11:44:11 S 02 47 17.006 -32 48 38.41 V C57
2020-10-25 11:44:11 s 1 +117573.27 1 +332463.34 7210.0 C57
2020-10-25 11:54:11 S 02 47 15.847 -32 48 45.97 V C57
2020-10-25 11:54:11 s 1 +117254.09 5 +332834.88 4680.0 C57
2020-10-25 12:04:11 S 02 47 14.693 -32 48 54.40 V C57
2020-10-25 12:04:11 s 1 +116934.53 7 +333205.34 2010.0 C57
2020-10-25 12:14:11 S 02 47 13.462 -32 49 02.60 V C57
2020-10-25 12:14:11 s 1 +116614.59 8 +333574.71 9190.0 C57
2020-10-25 12:24:11 S 02 47 12.324 -32 49 10.20 V C57
2020-10-25 12:24:11 s 1 +116294.28 1 +333943.00 6230.0 C57
2020-10-25 12:34:11 S 02 47 11.086 -32 49 17.18 V C57
2020-10-25 12:34:11 s 1 +115973.58 7 +334310.21 3130.0 C57
2020-10-25 12:44:11 S 02 47 10.010 -32 49 26.94 V C57
2020-10-25 12:44:11 s 1 +115652.51 8 +334676.34 9880.0 C57
2020-10-25 12:54:11 S 02 47 08.784 -32 49 34.28 V C57
2020-10-25 12:54:11 s 1 +115331.07 6 +335041.38 6500.0 C57
2020-10-25 13:04:11 S 02 47 07.615 -32 49 42.42 V C57
2020-10-25 13:04:11 s 1 +115009.26 2 +335405.35 2970.0 C57
2020-10-25 13:14:11 S 02 47 06.427 -32 49 49.84 V C57
2020-10-25 13:14:11 s 1 +114687.07 9 +335768.24 9310.0 C57
2020-10-25 13:24:11 S 02 47 05.227 -32 49 57.50 V C57
2020-10-25 13:24:11 s 1 +114364.52 9 +336130.05 5510.0 C57
2020-10-25 13:34:11 S 02 47 04.061 -32 50 06.07 V C57
2020-10-25 13:34:11 s 1 +114041.61 2 +336490.79 1570.0 C57
2020-10-25 13:44:11 S 02 47 02.858 -32 50 14.75 V C57
2020-10-25 13:44:11 s 1 +113718.33 1 +336850.45 7500.0 C57
2020-10-25 13:54:11 S 02 47 01.709 -32 50 21.95 V C57
2020-10-25 13:54:11 s 1 +113394.68 7 +337209.03 3300.0 C57
2020-10-25 14:04:11 S 02 47 00.422 -32 50 28.93 V C57
2020-10-25 14:04:11 s 1 +113070.68 3 +337566.55 8960.0 C57
2020-10-25 14:14:11 S 02 46 59.443 -32 50 38.26 V C57
2020-10-25 14:14:11 s 1 +112746.31 9 +337922.99 4490.0 C57
2020-10-25 14:24:11 S 02 46 58.147 -32 50 45.89 V C57
2020-10-25 14:24:11 s 1 +112421.59 9 +338278.36 9890.0 C57
2020-10-25 14:34:11 S 02 46 56.945 -32 50 53.99 V C57
2020-10-25 14:34:11 s 1 +112096.52 2 +338632.66 5160.0 C57
2020-10-25 14:44:11 S 02 46 55.762 -32 51 00.68 V C57
2020-10-25 14:44:11 s 1 +111771.09 2 +338985.89 300.0 C57
2020-10-25 14:54:11 S 02 46 54.612 -32 51 08.82 V C57
2020-10-25 14:54:11 s 1 +111445.31 0 +339338.05 5320.0 C57
2020-10-25 15:04:11 S 02 46 53.383 -32 51 17.39 V C57
2020-10-25 15:04:11 s 1 +111119.17 8 +339689.15 210.0 C57
2020-10-25 15:14:11 S 02 46 52.274 -32 51 26.03 V C57
2020-10-25 15:14:11 s 1 +110792.69 7 +340039.18 4970.0 C57
2020-10-25 15:24:11 S 02 46 50.988 -32 51 32.54 V C57
2020-10-25 15:24:11 s 1 +110465.86 9 +340388.14 9610.0 C57
2020-10-25 15:34:11 S 02 46 49.882 -32 51 41.54 V C57
2020-10-25 15:34:11 s 1 +110138.69 6 +340736.04 4130.0 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)