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
2021-11-09 17:28:01 C 00 24 50.95 +20 04 26.2 V 033
2021-11-09 20:00:44 C 00 23 19.21 +20 32 28.6 V L18
2021-11-09 20:02:14 C 00 23 18.33 +20 32 45.3 V L18
2021-11-09 20:03:44 C 00 23 17.47 +20 33 01.7 V L18
2021-11-09 22:34:29 C 00 21 52.10 +21 01 11.6 V Z80
2021-11-09 22:41:09 C 00 21 47.94 +21 02 28.2 V Z80
2021-11-09 22:47:48 C 00 21 43.82 +21 03 44.2 V Z80
2021-11-10 00:41:56 C 00 20 52.74 +21 27 32.1 X W34
2021-11-10 00:52:43 C 00 20 45.64 +21 29 43.5 X W34
2021-11-10 01:04:22 C 00 20 37.85 +21 32 06.6 X W34
2021-11-10 13:59:52 C 00 11 39.874 +24 27 50.83 V O85
2021-11-10 14:02:46 C 00 11 37.317 +24 28 35.00 V O85
2021-11-10 14:05:40 C 00 11 34.786 +24 29 18.94 V O85
2021-11-10 14:08:34 C 00 11 32.222 +24 30 02.87 V O85
2021-11-10 14:23:03 C 00 11 19.347 +24 33 43.44 V O85
2021-11-10 14:25:56 C 00 11 16.796 +24 34 27.34 V O85
2021-11-10 14:28:50 C 00 11 14.187 +24 35 11.60 V O85
2021-11-10 16:47:54 C 00 09 39.03 +25 09 23.0 V 033
2021-11-10 16:48:19 C 00 09 38.66 +25 09 29.7 V 033
2021-11-10 16:48:44 C 00 09 38.30 +25 09 36.5 V 033
2021-11-10 16:52:47 C 00 09 34.71 +25 10 42.7 V 033
2021-11-10 16:53:11 C 00 09 34.34 +25 10 49.5 V 033
2021-11-10 16:53:36 C 00 09 33.98 +25 10 56.1 V 033
2021-11-10 16:56:21 C 00 09 31.54 +25 11 41.1 V 033
2021-11-10 16:56:46 C 00 09 31.19 +25 11 47.8 V 033
2021-11-10 16:57:10 C 00 09 30.81 +25 11 54.6 V 033
2021-11-10 17:33:38 C 00 08 57.87 +25 21 55.3 V 033
2021-11-10 17:34:03 C 00 08 57.49 +25 22 02.2 V 033
2021-11-10 17:34:27 C 00 08 57.12 +25 22 08.9 V 033
2021-11-10 18:19:33 C 00 08 19.63 +25 34 39.2 X Z43
2021-11-10 18:26:30 C 00 08 13.14 +25 36 36.1 X Z43
2021-11-10 18:33:29 C 00 08 06.60 +25 38 33.7 X Z43
2021-11-11 04:27:59 C 23 58 03.21 +28 41 53.1 U I41
2021-11-11 04:28:29 C 23 58 02.56 +28 42 03.2 U I41
2021-11-11 05:51:20 C 23 56 17.10 +29 10 00.6 U I41
2021-11-11 05:51:50 C 23 56 16.32 +29 10 11.1 U I41
2021-11-11 08:13:55 C 23 53 22.83 +30 02 06.4 V T08
2021-11-11 08:18:38 C 23 53 16.24 +30 03 47.1 V T08
2021-11-11 08:36:41 C 23 52 50.90 +30 10 13.9 V T08
2021-11-11 09:00:03 C 23 52 17.89 +30 18 36.4 V T08
2021-11-11 17:09:53 C 23 40 54.48 +33 29 28.2 V B72
2021-11-11 17:11:43 C 23 40 51.27 +33 30 16.5 V B72
2021-11-11 17:13:17 C 23 40 48.56 +33 30 57.5 V B72
2021-11-11 17:17:00 C 23 40 42.06 +33 32 35.7 V B72
2021-11-11 17:19:24 C 23 40 37.86 +33 33 39.0 V B72
2021-11-11 17:20:49 C 23 40 35.39 +33 34 16.2 V B72
2021-11-11 17:21:58 C 23 40 33.35 +33 34 47.0 V B72
2021-11-11 17:23:11 C 23 40 31.20 +33 35 19.3 V B72
2021-11-11 18:02:00 C 23 39 26.64 +33 52 29.6 X Z43
2021-11-11 18:08:11 C 23 39 15.50 +33 55 15.5 X Z43