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
2021-11-06 19:25:59 C 00 46 18.85 +12 19 31.4 V L18
2021-11-06 19:29:59 C 00 46 17.94 +12 19 48.0 V L18
2021-11-06 19:34:00 C 00 46 17.05 +12 20 04.6 V L18
2021-11-06 19:38:00 C 00 46 16.11 +12 20 21.2 V L18
2021-11-06 19:52:03 C 00 46 15.01 +12 21 25.9 V 595
2021-11-06 20:03:05 C 00 46 12.49 +12 22 12.6 V 595
2021-11-06 20:25:10 C 00 46 07.43 +12 23 44.4 V 595
2021-11-06 20:32:31 C 00 46 05.98 +12 24 00.9 V 033
2021-11-06 20:32:55 C 00 46 05.87 +12 24 02.8 V 033
2021-11-06 20:33:20 C 00 46 05.78 +12 24 04.5 V 033
2021-11-07 04:17:43 C 00 44 34.89 +12 58 37.6 V 703
2021-11-07 04:25:17 C 00 44 32.94 +12 59 12.1 V 703
2021-11-07 04:32:51 C 00 44 30.96 +12 59 46.5 V 703
2021-11-07 04:40:24 C 00 44 29.01 +13 00 19.6 V 703
2021-11-07 05:32:15 C 00 44 12.33 +13 04 07.4 q H45
2021-11-07 05:33:50 C 00 44 11.92 +13 04 13.9 q H45
2021-11-07 05:35:03 C 00 44 11.63 +13 04 20.5 q H45
2021-11-07 05:35:59 C 00 44 11.40 +13 04 24.0 q H45
2021-11-07 05:36:52 C 00 44 11.15 +13 04 28.1 q H45
2021-11-07 05:38:04 C 00 44 10.86 +13 04 33.6 q H45
2021-11-07 08:12:45 C 00 43 42.03 +13 17 36.1 V T08
2021-11-07 08:23:22 C 00 43 39.10 +13 18 26.2 V T08
2021-11-07 08:31:31 C 00 43 36.85 +13 19 05.2 V T08
2021-11-07 09:16:09 C 00 43 24.51 +13 22 37.9 V T08
2021-11-07 19:16:20 C 00 41 11.89 +14 12 10.9 V 033
2021-11-07 19:16:45 C 00 41 11.77 +14 12 13.2 V 033
2021-11-07 19:17:09 C 00 41 11.65 +14 12 15.4 V 033
2021-11-07 20:20:46 C 00 40 55.09 +14 18 02.4 V Z80
2021-11-07 20:29:46 C 00 40 52.44 +14 18 53.2 V Z80
2021-11-07 20:39:31 C 00 40 49.57 +14 19 47.6 V Z80
2021-11-08 04:45:10 C 00 38 37.80 +15 08 14.8 V G96
2021-11-08 04:52:38 C 00 38 35.23 +15 09 01.0 V G96
2021-11-08 05:00:05 C 00 38 32.68 +15 09 47.4 V G96
2021-11-08 05:07:33 C 00 38 30.13 +15 10 33.3 V G96
2021-11-09 00:30:12 C 00 32 17.42 +17 27 56.6 V W46
2021-11-09 00:35:24 C 00 32 15.16 +17 28 39.8 V W46
2021-11-09 00:40:45 C 00 32 12.83 +17 29 24.3 V W46
2021-11-09 07:55:05 C 00 29 08.62 +18 33 09.8 V T05
2021-11-09 08:45:53 C 00 28 42.54 +18 40 52.6 V T05
2021-11-09 08:50:08 C 00 28 40.33 +18 41 31.1 V T05
2021-11-09 08:57:28 C 00 28 36.59 +18 42 39.0 V T05
2021-11-09 13:42:33 C 00 26 33.631 +19 27 20.91 V O85
2021-11-09 13:45:27 C 00 26 32.054 +19 27 50.31 V O85
2021-11-09 13:48:21 C 00 26 30.440 +19 28 19.19 V O85
2021-11-09 14:00:56 C 00 26 23.480 +19 30 25.91 V O85
2021-11-09 14:09:37 C 00 26 18.645 +19 31 52.81 V O85
2021-11-09 15:48:58 C 00 25 22.909 +19 48 36.53 V O85
2021-11-09 17:26:43 C 00 24 51.65 +20 04 12.5 V 033
2021-11-09 17:27:08 C 00 24 51.42 +20 04 16.8 V 033
2021-11-09 17:27:33 C 00 24 51.20 +20 04 21.3 V 033