2021 UM9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6117694000
Semi-major axis (a)2.3191544000 AU
Inclination (i)2.45351000°
Long. of Asc. Node (Ω)35.60183000°
Arg. of Perihelion (ω)55.51903000°
Mean Anomaly (M)41.41007000°
Mean Motion (n)0.2790677000°/day
Perihelion dist (q)0.90036670 AU
Aphelion dist (Q)3.73794210 AU
Orbital Period3.53178690 yr
Physical Parameters
H (abs. magnitude)23.75
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.680″
Uncertainty6
Orbit TypeApollo
MOID0.010814 AU
Observations Used204
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-11-14
Observations (214)
Date Type RA Dec Mag Band Observatory
2021-10-26 10:13:20 C 01 08 17.667 +05 12 26.31 U F51
2021-10-26 10:30:36 C 01 08 16.679 +05 12 35.55 U F51
2021-10-26 10:47:47 C 01 08 15.683 +05 12 44.53 U F51
2021-10-26 11:04:59 C 01 08 14.711 +05 12 53.74 U F51
2021-10-26 13:31:30 C 01 08 12.972 +05 15 06.23 V P07
2021-10-26 15:39:26 C 01 08 05.532 +05 16 17.90 V P07
2021-10-26 16:07:38 C 01 08 03.842 +05 16 33.13 V P07
2021-10-26 16:48:17 C 01 08 01.488 +05 16 56.06 V P07
2021-10-27 12:28:48 C 01 07 18.005 +05 28 38.46 V P07
2021-10-27 13:28:27 C 01 07 14.402 +05 29 17.30 V P07
2021-10-27 15:35:06 C 01 07 06.418 +05 30 37.44 V P07
2021-10-27 15:35:41 C 01 07 06.398 +05 30 37.98 V P07
2021-10-27 16:03:54 C 01 07 04.555 +05 30 56.20 V P07
2021-10-27 16:33:29 C 01 07 02.762 +05 31 14.77 V P07
2021-10-28 04:29:06 C 01 06 34.94 +05 38 00.3 V G96
2021-10-28 04:37:12 C 01 06 34.43 +05 38 06.0 V G96
2021-10-28 04:45:19 C 01 06 33.92 +05 38 11.6 V G96
2021-10-28 04:53:26 C 01 06 33.40 +05 38 17.2 V G96
2021-10-28 05:37:00 C 01 06 30.53 +05 38 47.4 V 703
2021-10-28 05:44:38 C 01 06 30.11 +05 38 52.9 V 703
2021-10-28 05:59:57 C 01 06 28.98 +05 39 02.3 V 703
2021-10-31 05:39:11 C 01 02 45.10 +06 41 35.0 V 703
2021-10-31 05:46:47 C 01 02 44.49 +06 41 42.4 V 703
2021-10-31 06:02:01 C 01 02 43.23 +06 41 59.6 V 703
2021-11-02 13:04:57 C 00 58 54.034 +07 56 51.43 V P07
2021-11-02 14:12:25 C 00 58 46.332 +07 58 43.03 V P07
2021-11-02 15:22:15 C 00 58 38.357 +08 00 36.76 V P07
2021-11-02 16:23:49 C 00 58 31.339 +08 02 18.02 V P07
2021-11-03 04:48:17 C 00 57 31.36 +08 22 03.5 V 703
2021-11-03 04:55:54 C 00 57 30.47 +08 22 17.0 V 703
2021-11-03 05:03:31 C 00 57 29.56 +08 22 31.2 V 703
2021-11-03 05:11:08 C 00 57 28.62 +08 22 44.7 V 703
2021-11-03 06:04:48 C 00 57 22.10 +08 24 23.6 V I52
2021-11-03 06:09:20 C 00 57 21.56 +08 24 31.9 V I52
2021-11-03 06:15:08 C 00 57 20.83 +08 24 42.5 V I52
2021-11-03 06:19:41 C 00 57 20.27 +08 24 50.8 V I52
2021-11-03 10:30:16 C 00 56 58.99 +08 35 13.9 V 474
2021-11-03 10:34:20 C 00 56 58.48 +08 35 21.7 V 474
2021-11-03 10:38:25 C 00 56 58.00 +08 35 29.6 V 474
2021-11-04 09:21:58 C 00 54 36.57 +09 21 12.6 V T05
2021-11-04 09:26:36 C 00 54 35.89 +09 21 23.5 V T05
2021-11-04 09:36:32 C 00 54 34.41 +09 21 46.3 V T05
2021-11-04 09:56:00 C 00 54 31.56 +09 22 31.7 V T05
2021-11-05 20:26:25 C 00 50 09.80 +10 55 51.6 V 033
2021-11-05 20:26:49 C 00 50 09.74 +10 55 52.9 V 033
2021-11-05 20:27:14 C 00 50 09.66 +10 55 54.3 V 033
2021-11-06 12:27:56 C 00 47 37.19 +11 52 42.0 V D29
2021-11-06 12:53:23 C 00 47 31.64 +11 54 20.0 V D29
2021-11-06 13:18:50 C 00 47 26.05 +11 55 58.4 V D29
2021-11-06 19:21:59 C 00 46 19.77 +12 19 15.1 V L18