2021 UN20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5506909560 ± 6.88e-06
Semi-major axis (a)2.3114766669 AU ± 3.66e-05
Inclination (i)2.29714723° ± 2.28e-05
Long. of Asc. Node (Ω)133.31548450° ± 3.67e-05
Arg. of Perihelion (ω)316.66775034° ± 4.64e-05
Mean Anomaly (M)40.53453036° ± 9.54e-03
Mean Motion (n)0.2804645694°/day ± 6.67e-06
Perihelion dist (q)1.03856737 AU ± 2.29e-05
Aphelion dist (Q)3.58438596 AU ± 5.90e-05
Orbital Period3.51426309 yr ± 8.35e-05
Physical Parameters
H (abs. magnitude)23.62
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.239″
Uncertainty1
Orbit TypeAmor
MOID0.060805 AU
Observations Used125
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-30
Last Observation Used2022-02-11
Observations (126)
Date Type RA Dec Mag Band Observatory
2021-10-30 08:39:02 C 01 49 15.914 -01 01 51.68 U F52
2021-10-30 08:55:31 C 01 49 15.727 -01 02 01.20 U F52
2021-10-30 09:12:02 C 01 49 15.546 -01 02 10.80 U F52
2021-11-09 06:33:38 C 01 50 09.301 -03 19 12.35 U F51
2021-11-09 06:54:04 C 01 50 09.298 -03 19 24.22 U F51
2021-11-09 07:14:36 C 01 50 09.319 -03 19 35.68 U F51
2021-11-09 07:35:04 C 01 50 09.330 -03 19 47.30 U F51
2021-11-10 04:26:13 C 01 50 24.95 -03 31 34.8 V V06
2021-11-10 04:29:26 C 01 50 24.97 -03 31 37.1 V V06
2021-11-10 04:32:40 C 01 50 24.98 -03 31 39.1 V V06
2021-11-10 22:05:18 C 01 50 39.07 -03 41 32.3 V 033
2021-11-10 22:08:52 C 01 50 39.06 -03 41 34.0 V 033
2021-11-10 22:12:27 C 01 50 39.12 -03 41 36.6 V 033
2021-11-11 00:52:13 C 01 50 43.38 -03 42 06.2 V 807
2021-11-11 00:57:33 C 01 50 43.41 -03 42 09.0 V 807
2021-11-11 01:02:53 C 01 50 43.43 -03 42 12.0 V 807
2021-11-11 04:12:16 C 01 50 46.20 -03 44 43.3 V I52
2021-11-11 04:34:33 C 01 50 46.22 -03 44 55.8 V I52
2021-11-11 04:42:20 C 01 50 46.28 -03 45 00.6 V I52
2021-11-11 05:29:37 C 01 50 46.50 -03 45 26.1 V G96
2021-11-11 05:37:08 C 01 50 46.50 -03 45 30.5 V G96
2021-11-11 05:44:39 C 01 50 46.55 -03 45 35.0 V G96
2021-11-11 05:52:10 C 01 50 46.62 -03 45 39.2 V G96
2021-11-19 08:22:23 C 01 56 20.852 -05 24 25.50 U F52
2021-11-19 08:39:03 C 01 56 21.322 -05 24 32.97 U F52
2021-11-19 08:55:48 C 01 56 21.793 -05 24 40.72 U F52
2021-11-19 09:12:27 C 01 56 22.280 -05 24 48.29 U F52
2021-11-25 06:20:25 C 02 04 37.193 -06 22 51.50 U F52
2021-11-25 06:37:40 C 02 04 38.216 -06 22 57.93 U F52
2021-11-25 06:54:57 C 02 04 39.220 -06 23 04.25 U F52
2021-11-28 08:47:21 C 02 10 53.043 -06 46 55.66 U F51
2021-11-28 09:03:26 C 02 10 54.291 -06 47 00.17 U F51
2021-11-28 09:19:34 C 02 10 55.543 -06 47 04.69 U F51
2021-11-28 09:35:43 C 02 10 56.808 -06 47 09.07 U F51
2021-12-04 06:13:10 C 02 28 01.14 -07 15 11.3 V G96
2021-12-04 06:20:38 C 02 28 02.11 -07 15 12.1 V G96
2021-12-04 06:28:08 C 02 28 03.12 -07 15 12.6 V G96
2021-12-04 06:36:03 C 02 28 04.14 -07 15 13.2 V G96
2021-12-05 02:25:42 C 02 31 10.49 -07 15 22.8 u 807
2021-12-05 02:33:41 C 02 31 11.61 -07 15 23.5 u 807
2021-12-05 02:41:35 C 02 31 12.73 -07 15 23.7 u 807
2021-12-05 05:07:41 C 02 31 36.44 -07 16 56.6 V G96
2021-12-05 05:16:36 C 02 31 37.71 -07 16 56.9 V G96
2021-12-05 05:25:34 C 02 31 38.97 -07 16 57.5 V G96
2021-12-05 05:34:32 C 02 31 40.23 -07 16 57.8 V G96
2021-12-08 05:05:27 C 02 44 34.05 -07 16 01.8 V 734
2021-12-08 05:16:56 C 02 44 36.16 -07 16 00.0 V 734
2021-12-08 05:22:30 C 02 44 37.16 -07 15 59.3 V 734
2021-12-22 20:15:19 C 04 41 38.42 -03 17 58.6 V 033
2021-12-22 20:15:49 C 04 41 38.65 -03 17 57.6 V 033