IAA RAS IAA Minor Planet Database

2018 UM1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1737615782 ± 7.77e-08
Semi-major axis (a)1.1434794810 AU ± 5.05e-09
Inclination (i)1.99517201° ± 2.87e-06
Long. of Asc. Node (Ω)260.56422851° ± 8.28e-05
Arg. of Perihelion (ω)54.34621973° ± 8.45e-05
Mean Anomaly (M)338.30037866° ± 1.61e-05
Mean Motion (n)0.8060643471°/day ± 5.34e-09
Perihelion dist (q)0.94478668 AU ± 8.90e-08
Aphelion dist (Q)1.34217228 AU ± 8.91e-08
Orbital Period1.22276377 yr ± 8.10e-09
Physical Parameters
H (abs. magnitude)23.64
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.282″
Uncertainty0
Orbit TypeApollo
MOID0.002337 AU
Observations Used201
Oppositions2
Arc Total2013-2024
First Observation Used2013-01-17
Last Observation Used2024-01-10
Observations (201)
Date Type RA Dec Mag Band Observatory
2013-01-17 11:22:38 C 07 39 11.684 +17 00 43.03 – V F51
2013-01-17 11:44:38 C 07 39 09.091 +17 00 45.85 – V F51
2013-01-17 12:28:53 C 07 39 03.953 +17 00 51.29 – V F51
2013-01-21 11:56:50 C 07 28 52.564 +17 13 37.63 – V F51
2013-01-21 12:15:18 C 07 28 50.560 +17 13 39.30 – V F51
2018-10-19 03:29:31 C 22 35 03.39 +21 37 30.8 – V 703
2018-10-19 03:37:07 C 22 35 06.30 +21 37 21.9 – V 703
2018-10-19 03:44:43 C 22 35 09.09 +21 37 14.5 – V 703
2018-10-19 03:52:18 C 22 35 11.92 +21 37 03.8 – V 703
2018-10-19 05:06:37 C 22 35 39.05 +21 35 32.4 – V 703
2018-10-19 05:09:10 C 22 35 39.94 +21 35 29.8 – V 703
2018-10-19 05:13:54 C 22 35 41.70 +21 35 24.1 – V 703
2018-10-19 18:13:49 C 22 40 53.76 +21 19 10.4 19.1 U B04
2018-10-19 18:23:34 C 22 40 56.67 +21 19 02.6 – V L01
2018-10-19 18:24:48 C 22 40 57.10 +21 19 01.1 – V L01
2018-10-19 18:32:55 C 22 41 00.03 +21 18 51.9 – V L01
2018-10-19 18:37:19 C 22 41 02.76 +21 18 30.7 – V J95
2018-10-19 18:41:08 C 22 41 04.16 +21 18 26.0 – V J95
2018-10-19 18:45:07 C 22 41 05.56 +21 18 21.8 – V J95
2018-10-19 18:56:02 C 22 41 08.91 +21 18 23.0 18.2 U B04
2018-10-19 19:06:36 C 22 41 12.50 +21 18 11.0 – V 587
2018-10-19 19:08:01 C 22 41 13.02 +21 18 09.2 – V 587
2018-10-19 19:09:25 C 22 41 13.49 +21 18 08.8 – V 587
2018-10-19 19:34:07 C 22 41 22.17 +21 17 42.5 18.7 V 104
2018-10-19 19:42:40 C 22 41 25.19 +21 17 32.5 18.8 V 104
2018-10-19 19:50:39 C 22 41 28.01 +21 17 22.6 18.9 V 104
2018-10-19 19:50:44 C 22 41 28.40 +21 17 19.2 18.6 U B04
2018-10-20 01:49:17 C 22 43 48.64 +21 10 29.1 – V I52
2018-10-20 01:49:43 C 22 43 48.82 +21 10 27.7 – V I52
2018-10-20 01:52:05 C 22 43 49.61 +21 10 25.5 – V I52
2018-10-20 01:54:11 C 22 43 50.16 +21 10 12.9 – q V03
2018-10-20 01:54:27 C 22 43 50.44 +21 10 23.2 – V I52
2018-10-20 02:04:45 C 22 43 53.88 +21 10 01.6 – q V03
2018-10-20 02:17:35 C 22 43 58.34 +21 09 47.2 – q V03
2018-10-20 02:27:47 C 22 44 01.89 +21 09 35.8 – q V03
2018-10-20 19:14:35 C 22 50 09.52 +20 49 13.3 – V 595
2018-10-20 19:19:43 C 22 50 12.56 +20 48 54.0 – V J95
2018-10-20 19:28:26 C 22 50 15.49 +20 48 43.8 – V J95
2018-10-20 19:39:14 C 22 50 19.12 +20 48 31.4 – V J95
2018-10-20 19:39:40 C 22 50 17.80 +20 48 43.6 – V 595
2018-10-20 20:15:29 C 22 50 30.07 +20 48 04.1 – V K63
2018-10-20 20:19:17 C 22 50 31.25 +20 48 00.2 – V K63
2018-10-20 20:25:18 C 22 50 33.24 +20 47 53.2 – V K63
2018-10-21 01:07:21 C 22 52 16.73 +20 42 22.9 – u H21
2018-10-21 01:13:07 C 22 52 18.58 +20 42 17.0 – u H21
2018-10-21 01:21:33 C 22 52 21.27 +20 42 06.6 – u H21
2018-10-21 04:39:36 C 22 53 27.59 +20 38 29.9 – o 291
2018-10-21 04:49:34 C 22 53 30.75 +20 38 18.1 – o 291
2018-10-21 04:57:50 C 22 53 33.38 +20 38 08.2 – o 291
2018-10-22 02:01:40 C 23 00 43.66 +20 13 03.0 – u H21