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
2022-10-26 04:53:06 C 01 38 05.198 -35 23 29.72 V W68
2022-10-26 04:55:03 C 01 38 04.980 -35 23 30.16 V W68
2022-10-26 05:02:58 C 01 38 04.118 -35 23 31.99 V W68
2022-10-26 05:17:04 C 01 38 02.561 -35 23 35.74 V W68
2022-10-26 20:49:02 C 01 36 19.046 -35 27 09.94 V M22
2022-10-26 20:51:37 C 01 36 18.744 -35 27 10.33 V M22
2022-10-26 23:09:55 C 01 36 02.904 -35 27 40.36 V M22
2022-10-27 20:26:47 C 01 33 40.195 -35 31 54.88 V M22
2022-10-27 20:31:29 C 01 33 39.660 -35 31 55.85 V M22
2022-10-27 20:36:05 C 01 33 39.139 -35 31 56.53 V M22
2022-10-27 21:26:53 C 01 33 33.278 -35 32 06.14 V M22
2022-10-29 03:42:10 C 01 30 08.386 -35 36 54.76 V W68
2022-10-29 03:58:09 C 01 30 06.530 -35 36 56.88 V W68
2022-10-29 04:03:29 C 01 30 05.890 -35 36 57.64 V W68
2022-10-29 04:11:00 C 01 30 05.033 -35 36 58.61 V W68
2022-10-29 22:25:41 C 01 28 00.864 -35 39 10.44 V M22
2022-10-29 22:30:53 C 01 28 00.257 -35 39 10.91 V M22
2022-10-29 22:38:46 C 01 27 59.342 -35 39 11.70 V M22
2022-10-29 23:26:13 C 01 27 53.827 -35 39 16.34 V M22
2022-10-30 02:37:21 C 01 27 32.628 -35 39 36.72 V W68
2022-10-30 02:39:56 C 01 27 32.326 -35 39 36.76 V W68
2022-10-30 02:44:28 C 01 27 31.788 -35 39 37.44 V W68
2022-10-30 02:52:15 C 01 27 30.888 -35 39 38.27 V W68
2022-10-31 21:53:01 C 01 22 37.128 -35 42 28.08 V M22
2022-10-31 22:00:29 C 01 22 36.288 -35 42 28.30 V M22
2022-10-31 22:07:07 C 01 22 35.503 -35 42 28.51 V M22
2022-10-31 22:54:24 C 01 22 29.981 -35 42 29.70 V M22
2022-11-02 01:58:55 C 01 19 25.673 -35 42 44.50 V W68
2022-11-02 02:03:06 C 01 19 25.193 -35 42 44.39 V W68
2022-11-02 02:09:35 C 01 19 24.430 -35 42 44.60 V W68
2022-11-02 02:26:51 C 01 19 22.399 -35 42 44.17 V W68
2022-11-03 03:29:51 C 01 16 31.536 -35 41 54.24 V W68
2022-11-03 03:34:57 C 01 16 30.934 -35 41 54.02 V W68
2022-11-03 03:47:31 C 01 16 29.470 -35 41 53.41 V W68
2022-11-03 04:01:42 C 01 16 27.826 -35 41 52.55 V W68
2022-11-06 03:37:56 C 01 08 24.190 -35 33 55.58 V W68
2022-11-06 03:43:08 C 01 08 23.618 -35 33 54.65 V W68
2022-11-06 03:45:05 C 01 08 23.366 -35 33 53.86 V W68
2022-11-06 03:57:46 C 01 08 21.955 -35 33 52.31 V W68
2022-11-07 20:45:51 C 01 03 51.046 -35 25 40.98 V M22
2022-11-07 21:35:35 C 01 03 45.434 -35 25 29.32 V M22
2022-11-07 21:43:30 C 01 03 44.546 -35 25 27.34 V M22
2022-11-07 22:29:15 C 01 03 40.15 -35 25 16.5 X X93
2022-11-07 22:31:56 C 01 03 39.93 -35 25 16.1 X X93
2022-11-07 22:34:38 C 01 03 39.62 -35 25 16.6 X X93
2022-11-11 03:20:20 C 00 55 22.786 -35 02 39.16 V W68
2022-11-11 03:24:22 C 00 55 22.356 -35 02 37.75 V W68
2022-11-11 03:36:37 C 00 55 21.024 -35 02 33.25 V W68
2022-11-11 03:52:03 C 00 55 19.339 -35 02 27.78 V W68
2022-11-11 21:08:51 C 00 53 30.732 -34 56 07.51 V M22
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)