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
2024-12-11 20:34:17 C 23 55 59.431 -26 16 04.66 V M22
2024-12-13 01:48:13 C 23 55 55.387 -25 49 15.24 V W68
2024-12-13 01:52:51 C 23 55 55.406 -25 49 10.99 V W68
2024-12-13 02:00:44 C 23 55 55.346 -25 49 04.15 V W68
2024-12-13 02:18:33 C 23 55 55.313 -25 48 47.34 V W68
2024-12-14 01:23:54 C 23 55 55.232 -25 27 31.54 V 703
2024-12-14 01:27:25 C 23 55 55.175 -25 27 28.19 V 703
2024-12-14 01:30:55 C 23 55 55.175 -25 27 25.34 V 703
2024-12-14 01:34:25 C 23 55 55.268 -25 27 21.56 V 703
2024-12-14 01:43:16 C 23 55 54.864 -25 27 05.72 V W68
2024-12-14 01:47:16 C 23 55 54.888 -25 27 02.45 V W68
2024-12-14 01:58:31 C 23 55 54.912 -25 26 51.83 V W68
2024-12-14 02:15:01 C 23 55 54.854 -25 26 36.42 V W68
2024-12-14 19:25:21 C 23 55 56.167 -25 10 34.97 V M22
2024-12-14 19:26:39 C 23 55 56.155 -25 10 34.14 V M22
2024-12-14 19:30:01 C 23 55 56.160 -25 10 30.54 V M22
2024-12-14 19:31:19 C 23 55 56.138 -25 10 29.50 V M22
2024-12-14 19:44:33 C 23 55 56.124 -25 10 16.82 V M22
2024-12-14 19:52:00 C 23 55 56.146 -25 10 09.84 V M22
2024-12-17 02:01:27 C 23 56 08.270 -24 19 01.20 V W68
2024-12-17 02:06:12 C 23 56 08.290 -24 18 56.34 V W68
2024-12-17 02:26:18 C 23 56 08.359 -24 18 37.37 V W68
2024-12-17 02:37:16 C 23 56 08.419 -24 18 26.68 V W68
2024-12-18 01:30:54 C 23 56 17.306 -23 56 33.86 V W68
2024-12-18 01:35:33 C 23 56 17.371 -23 56 29.36 V W68
2024-12-18 01:43:34 C 23 56 17.357 -23 56 21.91 V W68
2024-12-18 01:58:20 C 23 56 17.465 -23 56 07.55 V W68
2024-12-18 20:10:07 C 23 56 26.016 -23 38 35.95 V M22
2024-12-18 20:14:40 C 23 56 26.074 -23 38 31.60 V M22
2024-12-18 20:46:20 C 23 56 26.282 -23 38 00.92 V M22
2024-12-18 20:55:00 C 23 56 26.357 -23 37 52.43 V M22
2024-12-21 02:03:57 C 23 56 59.035 -22 46 09.48 V W68
2024-12-21 02:35:14 C 23 56 59.378 -22 45 38.48 V W68
2024-12-21 02:42:53 C 23 56 59.443 -22 45 30.89 V W68
2024-12-21 02:51:10 C 23 56 59.520 -22 45 22.25 V W68
2024-12-22 02:06:53 C 23 57 17.369 -22 22 28.52 V W68
2024-12-22 02:11:30 C 23 57 17.426 -22 22 23.99 V W68
2024-12-22 02:18:56 C 23 57 17.508 -22 22 16.72 V W68
2024-12-22 02:36:52 C 23 57 17.741 -22 21 58.79 V W68
2024-12-22 19:39:22 C 23 57 32.134 -22 05 06.18 V M22
2024-12-22 19:51:53 C 23 57 32.287 -22 04 54.05 V M22
2024-12-22 19:56:26 C 23 57 32.376 -22 04 49.04 V M22
2024-12-22 20:11:30 C 23 57 32.549 -22 04 34.32 V M22
2024-12-23 19:19:19 C 23 57 53.830 -21 41 32.03 V M22
2024-12-23 19:23:57 C 23 57 53.921 -21 41 26.81 V M22
2024-12-23 19:31:47 C 23 57 54.012 -21 41 19.36 V M22
2024-12-23 19:57:15 C 23 57 54.396 -21 40 53.47 V M22
2024-12-25 01:19:12 C 23 58 24.230 -21 11 24.76 V W68
2024-12-25 01:23:54 C 23 58 24.307 -21 11 19.75 V W68
2024-12-25 01:52:36 C 23 58 24.794 -21 10 50.66 V W68
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)