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
2020-10-24 19:14:11 S 02 49 12.631 -32 35 16.69 V C57
2020-10-24 19:14:11 s 1 +146938.96 9 +290122.62 6600.0 C57
2020-10-24 19:24:11 S 02 49 11.554 -32 35 25.69 V C57
2020-10-24 19:24:11 s 1 +146668.14 3 +290607.29 4930.0 C57
2020-10-24 19:34:11 S 02 49 10.346 -32 35 31.78 V C57
2020-10-24 19:34:11 s 1 +146396.70 8 +291090.75 2980.0 C57
2020-10-24 19:44:11 S 02 49 09.115 -32 35 43.19 V C57
2020-10-24 19:44:11 s 1 +146124.66 7 +291573.01 760.0 C57
2020-10-24 19:54:11 S 02 49 07.973 -32 35 50.68 V C57
2020-10-24 19:54:11 s 1 +145852.02 2 +292054.07 8250.0 C57
2020-10-24 20:04:11 S 02 49 06.878 -32 35 58.67 V C57
2020-10-24 20:04:11 s 1 +145578.77 7 +292533.92 5460.0 C57
2020-10-24 20:14:11 S 02 49 05.628 -32 36 05.44 V C57
2020-10-24 20:14:11 s 1 +145304.93 4 +293012.58 2390.0 C57
2020-10-24 20:24:11 S 02 49 04.627 -32 36 14.80 V C57
2020-10-24 20:24:11 s 1 +145030.49 6 +293490.04 9050.0 C57
2020-10-24 20:34:11 S 02 49 03.466 -32 36 23.29 V C57
2020-10-24 20:34:11 s 1 +144755.46 6 +293966.30 5430.0 C57
2020-10-24 20:44:11 S 02 49 02.237 -32 36 31.14 V C57
2020-10-24 20:44:11 s 1 +144479.84 6 +294441.36 1550.0 C57
2020-10-24 20:54:11 S 02 49 01.104 -32 36 39.13 V C57
2020-10-24 20:54:11 s 1 +144203.64 0 +294915.23 7390.0 C57
2020-10-24 21:04:11 S 02 48 59.846 -32 36 47.56 V C57
2020-10-24 21:04:11 s 1 +143926.85 0 +295387.91 2960.0 C57
2020-10-24 21:14:11 S 02 48 58.788 -32 36 56.56 V C57
2020-10-24 21:14:11 s 1 +143649.47 9 +295859.39 8270.0 C57
2020-10-24 21:24:11 S 02 48 57.622 -32 37 03.90 V C57
2020-10-24 21:24:11 s 1 +143371.52 9 +296329.69 3310.0 C57
2020-10-24 21:34:11 S 02 48 56.496 -32 37 12.65 V C57
2020-10-24 21:34:11 s 1 +143093.00 3 +296798.79 8090.0 C57
2020-10-24 21:44:11 S 02 48 55.358 -32 37 20.24 V C57
2020-10-24 21:44:11 s 1 +142813.90 5 +297266.71 2600.0 C57
2020-10-24 21:54:11 S 02 48 54.134 -32 37 28.56 V C57
2020-10-24 21:54:11 s 1 +142534.23 6 +297733.44 6860.0 C57
2020-10-24 22:04:11 S 02 48 52.934 -32 37 37.27 V C57
2020-10-24 22:04:11 s 1 +142253.99 9 +298198.99 850.0 C57
2020-10-24 22:14:11 S 02 48 51.785 -32 37 44.22 V C57
2020-10-24 22:14:11 s 1 +141973.19 8 +298663.36 4590.0 C57
2020-10-24 22:24:11 S 02 48 50.676 -32 37 53.26 V C57
2020-10-24 22:24:11 s 1 +141691.83 3 +299126.54 8070.0 C57
2020-10-24 22:34:11 S 02 48 49.517 -32 38 01.61 V C57
2020-10-24 22:34:11 s 1 +141409.91 0 +299588.54 1300.0 C57
2020-10-24 22:44:11 S 02 48 48.278 -32 38 10.03 V C57
2020-10-24 22:44:11 s 1 +141127.42 9 +300049.37 4280.0 C57
2020-10-24 22:54:11 S 02 48 47.184 -32 38 18.28 V C57
2020-10-24 22:54:11 s 1 +140844.39 3 +300509.01 7000.0 C57
2020-10-24 23:04:11 S 02 48 46.003 -32 38 24.22 V C57
2020-10-24 23:04:11 s 1 +140560.80 5 +300967.48 9480.0 C57
2020-10-24 23:14:11 S 02 48 44.926 -32 38 34.84 V C57
2020-10-24 23:14:11 s 1 +140276.66 8 +301424.77 1710.0 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)