IAA RAS IAA Minor Planet Database

2021 UM1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5657032000
Semi-major axis (a)2.3597825000 AU
Inclination (i)4.34484000°
Long. of Asc. Node (Ω)221.60004000°
Arg. of Perihelion (ω)166.44921000°
Mean Anomaly (M)44.95298000°
Mean Motion (n)0.2718918000°/day
Perihelion dist (q)1.02484600 AU
Aphelion dist (Q)3.69471900 AU
Orbital Period3.62499960 yr
Physical Parameters
H (abs. magnitude)26.45
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.620″
Uncertainty7
Orbit TypeAmor
MOID0.032506 AU
Observations Used54
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-11-07
Observations (55)
Date Type RA Dec Mag Band Observatory
2021-10-26 03:18:54 C 23 56 55.54 +22 54 39.9 – V G96
2021-10-26 03:27:05 C 23 57 04.74 +22 54 59.1 – V G96
2021-10-26 03:35:15 C 23 57 13.89 +22 55 18.3 – V G96
2021-10-26 03:43:26 C 23 57 23.14 +22 55 36.9 – V G96
2021-10-26 05:14:00 C 23 59 04.33 +22 58 57.9 – V V06
2021-10-26 05:14:24 C 23 59 04.76 +22 58 58.5 – V V06
2021-10-26 05:14:48 C 23 59 05.21 +22 58 59.4 – V V06
2021-10-26 06:15:43 C 00 00 25.777 +23 01 47.94 – V F52
2021-10-26 06:33:33 C 00 00 45.821 +23 02 28.41 – V F52
2021-10-26 21:06:20 C 00 18 17.10 +23 28 14.8 – V L01
2021-10-26 21:08:46 C 00 18 19.99 +23 28 18.2 – V L01
2021-10-26 21:11:00 C 00 18 22.62 +23 28 22.1 – V L01
2021-10-26 21:13:14 C 00 18 25.25 +23 28 26.2 – V L01
2021-10-26 21:15:27 C 00 18 27.85 +23 28 30.0 – V L01
2021-10-26 22:41:20 C 00 20 12.51 +23 30 52.7 – X 958
2021-10-26 22:51:33 C 00 20 24.54 +23 31 08.3 – X 958
2021-10-26 23:01:48 C 00 20 36.68 +23 31 24.2 – X 958
2021-10-27 02:19:48 C 00 24 51.91 +23 36 37.6 – u H21
2021-10-27 02:27:51 C 00 25 01.51 +23 36 50.0 – u H21
2021-10-27 02:39:56 C 00 25 15.92 +23 37 08.6 – u H21
2021-10-27 06:19:31 C 00 29 55.638 +23 43 20.02 – U F52
2021-10-27 06:35:03 C 00 30 14.193 +23 43 43.50 – U F52
2021-10-27 06:50:34 C 00 30 32.709 +23 44 06.57 – U F52
2021-10-27 07:06:09 C 00 30 51.275 +23 44 29.17 – U F52
2021-10-27 20:49:01 C 00 48 11.54 +23 56 47.6 – V L01
2021-10-27 20:50:30 C 00 48 13.42 +23 56 48.7 – V L01
2021-10-27 20:52:00 C 00 48 15.20 +23 56 49.5 – V L01
2021-10-27 20:53:30 C 00 48 17.05 +23 56 50.8 – V L01
2021-10-27 20:54:59 C 00 48 18.86 +23 56 52.5 – V L01
2021-10-27 23:12:30 C 00 51 08.54 +23 58 21.6 – V 204
2021-10-27 23:30:07 C 00 51 30.19 +23 58 30.7 – V 204
2021-10-28 02:48:57 C 00 56 01.19 +24 01 00.3 – V I52
2021-10-28 02:50:44 C 00 56 03.48 +24 01 01.2 – V I52
2021-10-28 02:53:44 C 00 56 07.15 +24 01 03.9 – V I52
2021-10-28 02:54:45 C 00 56 08.45 +24 01 05.4 – V I52
2021-10-28 07:29:25 C 01 01 44.04 +24 03 13.5 – V I52
2021-10-28 07:30:17 C 01 01 45.12 +24 03 13.4 – V I52
2021-10-28 07:33:53 C 01 01 49.52 +24 03 14.4 – V I52
2021-10-28 07:34:14 C 01 01 49.93 +24 03 14.4 – V I52
2021-10-29 22:17:43 C 01 50 50.13 +23 44 04.9 – V K88
2021-10-29 22:20:34 C 01 50 53.46 +23 44 01.0 – V K88
2021-10-29 22:23:25 C 01 50 56.82 +23 43 57.7 – V K88
2021-10-30 23:15:59 C 02 20 17.93 +23 04 08.5 – V K88
2021-10-30 23:18:49 C 02 20 21.02 +23 04 04.0 – V K88
2021-10-30 23:21:40 C 02 20 24.09 +23 03 58.6 – V K88
2021-10-30 23:30:47 C 02 20 37.89 +23 03 21.6 – V Z99
2021-10-30 23:32:45 C 02 20 40.04 +23 03 17.6 – V Z99
2021-10-30 23:34:44 C 02 20 42.20 +23 03 13.7 – V Z99
2021-10-30 23:36:44 C 02 20 44.35 +23 03 09.9 – V Z99
2021-10-30 23:38:44 C 02 20 46.53 +23 03 05.9 – V Z99