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
2018-11-19 13:44:39 S 05 15 15.247 -54 23 47.26 V C57
2018-11-19 13:44:39 s 1 +48935.164 0 +339675.62 7290.0 C57
2018-11-19 14:14:39 S 05 15 16.675 -54 27 40.82 V C57
2018-11-19 14:14:39 s 1 +47916.506 0 +340518.58 640.0 C57
2018-11-19 15:14:39 S 05 15 18.866 -54 34 53.69 V C57
2018-11-19 15:14:39 s 1 +45875.019 0 +342173.97 4820.0 C57
2018-11-19 16:14:39 S 05 15 21.576 -54 42 30.96 V C57
2018-11-19 16:14:39 s 1 +43828.223 0 +343788.79 7290.0 C57
2018-11-19 16:44:39 S 05 15 22.555 -54 45 59.51 V C57
2018-11-19 16:44:39 s 1 +42802.925 0 +344581.05 8490.0 C57
2018-11-19 18:44:39 S 05 15 27.878 -55 01 20.17 V C57
2018-11-19 18:44:39 s 1 +38689.914 0 +347649.62 8640.0 C57
2018-11-19 19:14:39 S 05 15 29.158 -55 05 34.12 V C57
2018-11-19 19:14:39 s 1 +37658.882 0 +348391.76 3680.0 C57
2018-11-19 20:44:39 S 05 15 32.966 -55 16 43.39 V C57
2018-11-19 20:44:39 s 1 +34559.676 0 +350558.51 8460.0 C57
2018-11-19 21:14:39 S 05 15 34.387 -55 20 25.33 V C57
2018-11-19 21:14:39 s 1 +33524.684 0 +351260.94 680.0 C57
2018-11-19 23:14:39 S 05 15 39.446 -55 35 26.41 V C57
2018-11-19 23:14:39 s 1 +29375.982 0 +353972.16 5270.0 C57
2018-11-20 01:44:39 S 05 15 46.183 -55 55 05.20 V C57
2018-11-20 01:44:39 s 1 +24172.897 0 +357141.01 2290.0 C57
2018-11-20 02:14:39 S 05 15 47.722 -55 59 26.20 V C57
2018-11-20 02:14:39 s 1 +23130.304 0 +357745.62 7620.0 C57
2018-11-20 02:44:39 S 05 15 49.051 -56 03 06.84 V C57
2018-11-20 02:44:39 s 1 +22087.125 0 +358340.55 7390.0 C57
2018-11-20 03:14:39 S 05 15 50.498 -56 07 07.36 V C57
2018-11-20 03:14:39 s 1 +21043.390 0 +358925.82 1810.0 C57
2018-11-20 03:44:39 S 05 15 51.970 -56 11 08.16 V C57
2018-11-20 03:44:39 s 1 +19999.131 0 +359501.44 1080.0 C57
2018-11-20 04:14:39 S 05 15 53.426 -56 15 09.50 V C57
2018-11-20 04:14:39 s 1 +18954.377 0 +360067.45 5390.0 C57
2018-11-20 04:44:39 S 05 15 54.845 -56 18 48.96 V C57
2018-11-20 04:44:39 s 1 +17909.158 0 +360623.85 4940.0 C57
2018-11-20 05:14:39 S 05 15 56.227 -56 22 51.78 V C57
2018-11-20 05:14:39 s 1 +16863.504 0 +361170.66 9920.0 C57
2018-11-20 06:44:39 S 05 16 00.626 -56 34 30.47 V C57
2018-11-20 06:44:39 s 1 +13724.229 0 +362753.72 9400.0 C57
2018-11-20 07:44:39 S 05 16 03.595 -56 42 41.94 V C57
2018-11-20 07:44:39 s 1 +11629.742 0 +363761.45 3040.0 C57
2018-11-20 08:14:39 S 05 16 05.119 -56 46 44.51 V C57
2018-11-20 08:14:39 s 1 +10582.095 0 +364251.08 4630.0 C57
2018-11-20 10:14:39 S 05 16 11.287 -57 02 58.81 V C57
2018-11-20 11:44:39 S 05 16 16.229 -57 15 23.90 V C57
2018-11-20 12:14:39 S 05 16 17.597 -57 19 14.12 V C57
2018-11-20 12:44:39 S 05 16 19.174 -57 23 18.31 V C57
2018-11-20 13:14:39 S 05 16 20.851 -57 27 16.45 V C57
2018-11-20 14:14:39 S 05 16 24.038 -57 35 32.46 V C57
2018-11-20 14:44:39 S 05 16 25.666 -57 39 37.84 V C57
2018-11-20 15:14:39 S 05 16 27.178 -57 43 10.81 V 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)