2011 UG21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5470024686 ± 5.44e-08
Semi-major axis (a)0.9369476478 AU ± 2.48e-09
Inclination (i)14.56834215° ± 3.78e-06
Long. of Asc. Node (Ω)86.54974798° ± 2.49e-05
Arg. of Perihelion (ω)82.46743816° ± 2.31e-05
Mean Anomaly (M)77.98692839° ± 1.50e-05
Mean Motion (n)1.0867741213°/day ± 4.32e-09
Perihelion dist (q)0.42443497 AU ± 5.10e-08
Aphelion dist (Q)1.44946032 AU ± 5.12e-08
Orbital Period0.90692837 yr ± 3.61e-09
Physical Parameters
H (abs. magnitude)19.37
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.230″
Uncertainty0
Orbit TypeAten
MOID0.129364 AU
Observations Used92
Oppositions1
Arc Total2011-2022
First Observation Used2011-10-19
Last Observation Used2022-10-01
Observations (94)
Date Type RA Dec Mag Band Observatory
2012-09-10 02:56:05 C 04 16 10.62 -09 24 00.1 o 033
2012-09-10 03:15:10 C 04 16 11.74 -09 24 12.2 o 033
2012-09-13 11:28:21 C 04 22 45.24 -10 22 22.7 o 926
2012-09-13 11:42:58 C 04 22 46.40 -10 22 34.1 o 926
2012-09-13 11:57:35 C 04 22 47.56 -10 22 45.5 o 926
2012-09-14 12:06:40 C 04 24 47.41 -10 41 35.2 o 926
2012-10-10 11:36:31 C 05 28 34.14 -23 56 54.2 u 448
2012-10-10 11:55:19 C 05 28 36.71 -23 57 30.6 u 448
2012-10-10 12:14:06 C 05 28 39.31 -23 58 08.0 u 448
2018-08-09 08:09:31 C 13 32 22.54 -33 22 02.2 V 474
2018-08-09 08:12:58 C 13 32 23.84 -33 22 12.6 V 474
2018-08-09 08:14:41 C 13 32 24.50 -33 22 17.6 V 474
2018-08-09 08:16:25 C 13 32 25.12 -33 22 22.7 V 474
2019-07-27 12:49:09 C 01 14 07.31 -44 10 55.9 V T08
2019-07-27 12:54:57 C 01 14 06.13 -44 11 13.1 V T08
2019-07-27 13:13:16 C 01 14 02.35 -44 12 07.0 V T08
2019-07-27 13:25:02 C 01 14 00.06 -44 12 39.5 V T08
2019-07-27 13:38:12 C 01 13 57.33 -44 13 18.3 V T08
2019-07-28 07:35:00 C 01 10 28.13 -45 03 30.4 q W76
2019-07-28 07:47:02 C 01 10 25.65 -45 04 04.3 q W76
2019-07-28 07:59:51 C 01 10 22.99 -45 04 40.4 q W76
2019-07-28 15:38:37 C 01 08 52.31 -45 25 48.1 q E23
2019-07-28 15:48:36 C 01 08 50.31 -45 26 16.3 q E23
2019-07-28 15:58:37 C 01 08 48.18 -45 26 44.8 q E23
2019-08-03 13:28:28 C 00 36 35.04 -51 20 28.0 q Q62
2019-08-03 13:40:59 C 00 36 31.78 -51 20 56.4 q Q62
2019-08-03 13:53:32 C 00 36 28.50 -51 21 25.1 q Q62
2020-08-18 13:19:50 C 01 31 24.245 -30 57 18.76 U F51
2020-08-18 13:34:41 C 01 31 23.347 -30 57 40.99 U F51
2020-08-18 13:49:32 C 01 31 22.448 -30 58 03.41 U F51
2021-01-08 05:13:05 C 23 13 30.912 -14 14 29.27 U F51
2021-01-08 05:29:21 C 23 13 31.716 -14 14 12.56 U F51
2021-01-08 05:45:39 C 23 13 32.494 -14 13 55.68 U F51
2022-09-25 12:47:04 C 05 28 00.851 -08 31 10.77 U F52
2022-09-25 13:06:32 C 05 28 03.623 -08 31 25.08 U F52
2022-09-25 13:25:57 C 05 28 06.402 -08 31 39.16 U F52
2022-09-25 13:45:20 C 05 28 09.168 -08 31 53.32 U F52
2022-09-29 14:26:49 C 05 43 07.065 -09 46 28.53 U F52
2022-09-29 14:41:38 C 05 43 09.423 -09 46 40.71 U F52
2022-09-29 14:56:30 C 05 43 11.780 -09 46 52.94 U F52
2022-10-01 11:54:25 C 05 50 47.224 -10 24 52.60 V G96
2022-10-01 12:01:51 C 05 50 48.476 -10 24 59.18 V G96
2022-10-01 12:13:41 C 05 50 50.492 -10 25 09.30 V G96
2022-10-01 12:21:06 C 05 50 51.738 -10 25 15.74 V G96