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
2020-10-18 23:14:12 S 03 02 07.106 -30 31 09.12 V C57
2020-10-18 23:14:12 s 1 -210354.22 9 +142377.83 3260.0 C57
2020-10-18 23:24:12 S 03 02 06.331 -30 31 18.12 V C57
2020-10-18 23:24:12 s 1 -210308.47 2 +141636.17 2360.0 C57
2020-10-18 23:34:12 S 03 02 05.582 -30 31 25.10 V C57
2020-10-18 23:34:12 s 1 -210260.86 9 +140893.27 120.0 C57
2020-10-18 23:44:12 S 03 02 04.918 -30 31 35.62 V C57
2020-10-18 23:44:12 s 1 -210211.40 9 +140149.12 6530.0 C57
2020-10-19 00:04:12 S 03 02 03.288 -30 31 50.99 V C57
2020-10-19 00:04:12 s 1 -210106.88 1 +138657.11 5310.0 C57
2020-10-19 00:14:12 S 03 02 02.539 -30 32 00.49 V C57
2020-10-19 00:14:12 s 1 -210051.79 4 +137909.23 7670.0 C57
2020-10-19 00:24:12 S 03 02 01.826 -30 32 09.38 V C57
2020-10-19 00:24:12 s 1 -209994.81 2 +137160.12 8650.0 C57
2020-10-19 00:34:12 S 03 02 01.099 -30 32 14.64 V C57
2020-10-19 00:34:12 s 1 -209935.92 5 +136409.76 8260.0 C57
2020-10-19 00:44:12 S 03 02 00.451 -30 32 24.36 V C57
2020-10-19 00:44:12 s 1 -209875.12 4 +135658.15 6500.0 C57
2020-10-19 00:54:12 S 03 01 59.525 -30 32 33.14 V C57
2020-10-19 00:54:12 s 1 -209812.39 8 +134905.31 3350.0 C57
2020-10-19 01:04:12 S 03 01 58.771 -30 32 39.66 V C57
2020-10-19 01:04:12 s 1 -209747.73 7 +134151.22 8800.0 C57
2020-10-19 01:14:12 S 03 01 58.152 -30 32 49.81 V C57
2020-10-19 01:14:12 s 1 -209681.13 2 +133395.89 2860.0 C57
2020-10-19 01:24:12 S 03 01 57.163 -30 32 55.28 V C57
2020-10-19 01:24:12 s 1 -209612.57 2 +132639.32 5500.0 C57
2020-10-19 01:44:12 S 03 01 55.687 -30 33 12.82 V C57
2020-10-19 01:44:12 s 1 -209469.54 5 +131122.44 6560.0 C57
2020-10-19 01:54:12 S 03 01 55.056 -30 33 21.42 V C57
2020-10-19 01:54:12 s 1 -209395.05 8 +130362.14 4950.0 C57
2020-10-19 02:04:12 S 03 01 54.350 -30 33 30.31 V C57
2020-10-19 02:04:12 s 1 -209318.57 4 +129600.60 1910.0 C57
2020-10-19 02:14:12 S 03 01 53.438 -30 33 39.96 V C57
2020-10-19 02:14:12 s 1 -209240.08 4 +128837.81 7430.0 C57
2020-10-19 02:24:12 S 03 01 52.711 -30 33 45.50 V C57
2020-10-19 02:24:12 s 1 -209159.57 5 +128073.79 1500.0 C57
2020-10-19 02:34:12 S 03 01 52.099 -30 33 57.24 V C57
2020-10-19 02:34:12 s 1 -209077.03 9 +127308.52 4120.0 C57
2020-10-19 02:44:12 S 03 01 51.382 -30 34 04.51 V C57
2020-10-19 02:44:12 s 1 -208992.46 3 +126542.01 5280.0 C57
2020-10-19 02:54:12 S 03 01 50.645 -30 34 12.58 V C57
2020-10-19 02:54:12 s 1 -208905.83 7 +125774.26 4970.0 C57
2020-10-19 03:04:12 S 03 01 49.793 -30 34 22.26 V C57
2020-10-19 03:04:12 s 1 -208817.14 9 +125005.28 3190.0 C57
2020-10-19 03:14:12 S 03 01 49.068 -30 34 28.06 V C57
2020-10-19 03:14:12 s 1 -208726.39 0 +124235.05 9920.0 C57
2020-10-19 03:24:12 S 03 01 48.458 -30 34 35.87 V C57
2020-10-19 03:24:12 s 1 -208633.54 7 +123463.58 5170.0 C57
2020-10-19 03:34:12 S 03 01 47.597 -30 34 46.16 V C57
2020-10-19 03:34:12 s 1 -208538.61 0 +122690.87 8920.0 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)