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 15:04:11 S 02 49 41.486 -32 31 50.27 V C57
2020-10-24 15:04:11 s 1 +153502.98 3 +277609.88 670.0 C57
2020-10-24 15:14:11 S 02 49 40.378 -32 31 59.84 V C57
2020-10-24 15:14:11 s 1 +153248.35 8 +278125.16 6690.0 C57
2020-10-24 15:24:11 S 02 49 39.156 -32 32 07.01 V C57
2020-10-24 15:24:11 s 1 +152993.04 8 +278639.20 2380.0 C57
2020-10-24 15:34:11 S 02 49 38.057 -32 32 15.72 V C57
2020-10-24 15:34:11 s 1 +152737.05 5 +279152.00 7750.0 C57
2020-10-24 15:44:11 S 02 49 36.917 -32 32 23.96 V C57
2020-10-24 15:44:11 s 1 +152480.38 4 +279663.55 2780.0 C57
2020-10-24 15:54:11 S 02 49 35.746 -32 32 33.00 V C57
2020-10-24 15:54:11 s 1 +152223.03 6 +280173.87 7500.0 C57
2020-10-24 16:04:11 S 02 49 34.577 -32 32 39.66 V C57
2020-10-24 16:04:11 s 1 +151965.01 6 +280682.96 1890.0 C57
2020-10-24 16:14:11 S 02 49 33.466 -32 32 48.91 V C57
2020-10-24 16:14:11 s 1 +151706.32 7 +281190.80 5960.0 C57
2020-10-24 16:24:11 S 02 49 32.268 -32 32 56.08 V C57
2020-10-24 16:24:11 s 1 +151446.97 1 +281697.42 9710.0 C57
2020-10-24 16:34:11 S 02 49 31.193 -32 33 05.69 V C57
2020-10-24 16:34:11 s 1 +151186.95 2 +282202.80 3150.0 C57
2020-10-24 16:44:11 S 02 49 29.978 -32 33 13.64 V C57
2020-10-24 16:44:11 s 1 +150926.27 3 +282706.96 6270.0 C57
2020-10-24 16:54:11 S 02 49 28.838 -32 33 20.77 V C57
2020-10-24 16:54:11 s 1 +150664.93 7 +283209.88 9080.0 C57
2020-10-24 17:04:11 S 02 49 27.761 -32 33 30.56 V C57
2020-10-24 17:04:11 s 1 +150402.94 7 +283711.58 1580.0 C57
2020-10-24 17:14:11 S 02 49 26.549 -32 33 39.31 V C57
2020-10-24 17:14:11 s 1 +150140.30 7 +284212.05 3770.0 C57
2020-10-24 17:24:11 S 02 49 25.385 -32 33 46.55 V C57
2020-10-24 17:24:11 s 1 +149877.01 9 +284711.30 5650.0 C57
2020-10-24 17:34:11 S 02 49 24.202 -32 33 54.22 V C57
2020-10-24 17:34:11 s 1 +149613.08 6 +285209.32 7230.0 C57
2020-10-24 17:44:11 S 02 49 22.982 -32 34 03.04 V C57
2020-10-24 17:44:11 s 1 +149348.51 2 +285706.12 8500.0 C57
2020-10-24 17:54:11 S 02 49 21.960 -32 34 11.82 V C57
2020-10-24 17:54:11 s 1 +149083.29 9 +286201.71 9470.0 C57
2020-10-24 18:04:11 S 02 49 20.731 -32 34 20.10 V C57
2020-10-24 18:04:11 s 1 +148817.45 1 +286696.07 140.0 C57
2020-10-24 18:14:11 S 02 49 19.572 -32 34 27.55 V C57
2020-10-24 18:14:11 s 1 +148550.97 1 +287189.22 520.0 C57
2020-10-24 18:24:11 S 02 49 18.494 -32 34 36.30 V C57
2020-10-24 18:24:11 s 1 +148283.86 0 +287681.15 590.0 C57
2020-10-24 18:34:11 S 02 49 17.316 -32 34 44.22 V C57
2020-10-24 18:34:11 s 1 +148016.12 3 +288171.87 380.0 C57
2020-10-24 18:44:11 S 02 49 16.114 -32 34 52.72 V C57
2020-10-24 18:44:11 s 1 +147747.76 3 +288661.37 9870.0 C57
2020-10-24 18:54:11 S 02 49 14.957 -32 35 01.36 V C57
2020-10-24 18:54:11 s 1 +147478.78 2 +289149.66 9060.0 C57
2020-10-24 19:04:11 S 02 49 13.786 -32 35 10.00 V C57
2020-10-24 19:04:11 s 1 +147209.18 3 +289636.75 7970.0 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)