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 10:54:11 S 02 50 10.224 -32 28 21.72 V C57
2020-10-24 10:54:11 s 1 +159635.90 0 +264319.52 6870.0 C57
2020-10-24 11:04:11 S 02 50 09.000 -32 28 30.47 V C57
2020-10-24 11:04:11 s 1 +159399.52 6 +264866.37 1820.0 C57
2020-10-24 11:14:11 S 02 50 07.913 -32 28 38.10 V C57
2020-10-24 11:14:11 s 1 +159162.37 8 +265411.94 6380.0 C57
2020-10-24 11:24:11 S 02 50 06.715 -32 28 47.24 V C57
2020-10-24 11:24:11 s 1 +158924.46 1 +265956.23 560.0 C57
2020-10-24 11:34:11 S 02 50 05.614 -32 28 57.18 V C57
2020-10-24 11:34:11 s 1 +158685.77 9 +266499.24 4360.0 C57
2020-10-24 11:44:11 S 02 50 04.519 -32 29 04.38 V C57
2020-10-24 11:44:11 s 1 +158446.33 5 +267040.97 7790.0 C57
2020-10-24 11:54:11 S 02 50 03.286 -32 29 12.66 V C57
2020-10-24 11:54:11 s 1 +158206.13 3 +267581.43 840.0 C57
2020-10-24 12:04:11 S 02 50 02.256 -32 29 21.08 V C57
2020-10-24 12:04:11 s 1 +157965.17 6 +268120.61 3520.0 C57
2020-10-24 12:14:11 S 02 50 01.068 -32 29 30.19 V C57
2020-10-24 12:14:11 s 1 +157723.46 9 +268658.52 5830.0 C57
2020-10-24 12:24:11 S 02 49 59.849 -32 29 38.33 V C57
2020-10-24 12:24:11 s 1 +157481.01 4 +269195.16 7780.0 C57
2020-10-24 12:34:11 S 02 49 58.798 -32 29 46.57 V C57
2020-10-24 12:34:11 s 1 +157237.81 6 +269730.53 9350.0 C57
2020-10-24 12:44:11 S 02 49 57.540 -32 29 53.45 V C57
2020-10-24 12:44:11 s 1 +156993.87 7 +270264.64 570.0 C57
2020-10-24 12:54:11 S 02 49 56.405 -32 30 02.20 V C57
2020-10-24 12:54:11 s 1 +156749.20 2 +270797.47 1430.0 C57
2020-10-24 13:04:11 S 02 49 55.315 -32 30 10.91 V C57
2020-10-24 13:04:11 s 1 +156503.79 4 +271329.05 1920.0 C57
2020-10-24 13:14:11 S 02 49 54.146 -32 30 19.51 V C57
2020-10-24 13:14:11 s 1 +156257.65 7 +271859.36 2060.0 C57
2020-10-24 13:24:11 S 02 49 52.958 -32 30 26.96 V C57
2020-10-24 13:24:11 s 1 +156010.79 3 +272388.41 1850.0 C57
2020-10-24 13:34:11 S 02 49 51.792 -32 30 36.65 V C57
2020-10-24 13:34:11 s 1 +155763.20 7 +272916.20 1280.0 C57
2020-10-24 13:44:11 S 02 49 50.750 -32 30 44.46 V C57
2020-10-24 13:44:11 s 1 +155514.90 2 +273442.73 370.0 C57
2020-10-24 13:54:11 S 02 49 49.495 -32 30 51.95 V C57
2020-10-24 13:54:11 s 1 +155265.88 2 +273968.00 9100.0 C57
2020-10-24 14:04:11 S 02 49 48.338 -32 31 01.02 V C57
2020-10-24 14:04:11 s 1 +155016.14 9 +274492.02 7490.0 C57
2020-10-24 14:14:11 S 02 49 47.239 -32 31 08.90 V C57
2020-10-24 14:14:11 s 1 +154765.70 7 +275014.79 5530.0 C57
2020-10-24 14:24:11 S 02 49 45.996 -32 31 16.93 V C57
2020-10-24 14:24:11 s 1 +154514.55 9 +275536.31 3240.0 C57
2020-10-24 14:34:11 S 02 49 44.952 -32 31 25.43 V C57
2020-10-24 14:34:11 s 1 +154262.71 0 +276056.57 600.0 C57
2020-10-24 14:44:11 S 02 49 43.862 -32 31 33.06 V C57
2020-10-24 14:44:11 s 1 +154010.16 2 +276575.59 7620.0 C57
2020-10-24 14:54:11 S 02 49 42.670 -32 31 42.42 V C57
2020-10-24 14:54:11 s 1 +153756.91 8 +277093.36 4310.0 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)