IAA RAS IAA Minor Planet Database

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
2011-10-19 13:20:49 C 00 09 35.90 -45 21 55.8 – r E12
2011-10-19 13:37:00 C 00 09 32.77 -45 21 55.8 – r E12
2011-10-19 13:53:15 C 00 09 29.66 -45 21 56.7 – r E12
2011-10-19 14:09:34 C 00 09 26.49 -45 21 56.9 – r E12
2011-10-19 16:12:12 C 00 09 02.92 -45 21 57.5 – r E12
2011-10-19 17:31:04 C 00 08 47.91 -45 21 56.9 – r E12
2011-10-19 18:07:35 C 00 08 41.13 -45 21 55.9 – r E12
2011-10-20 00:46:40 C 00 07 29.00 -45 22 12.4 – o 807
2011-10-20 00:53:59 C 00 07 27.61 -45 22 12.8 – o 807
2011-10-20 01:00:50 C 00 07 26.31 -45 22 13.2 – o 807
2011-10-20 01:07:42 C 00 07 24.97 -45 22 13.5 – o 807
2011-10-20 03:27:05 C 00 06 58.01 -45 22 14.6 – u I20
2011-10-20 03:44:29 C 00 06 54.67 -45 22 14.3 – u I20
2011-10-20 09:52:53 C 00 05 47.64 -45 22 11.0 – r E12
2011-10-21 00:05:54 C 00 03 10.31 -45 21 41.6 – u 821
2011-10-21 00:09:21 C 00 03 09.63 -45 21 42.1 – u 821
2011-10-21 00:13:08 C 00 03 08.92 -45 21 41.6 – u 821
2011-10-21 00:29:30 C 00 03 05.97 -45 21 40.9 – o 807
2011-10-21 00:35:44 C 00 03 04.80 -45 21 41.0 – o 807
2011-10-21 00:41:57 C 00 03 03.62 -45 21 40.7 – o 807
2011-10-21 00:48:11 C 00 03 02.45 -45 21 40.6 – o 807
2011-10-21 00:54:12 C 00 03 01.30 -45 21 40.4 – o 807
2011-10-25 03:11:57 C 23 45 37.06 -45 03 50.9 – o 807
2011-10-25 03:17:59 C 23 45 36.00 -45 03 49.3 – o 807
2011-10-25 03:24:10 C 23 45 34.91 -45 03 47.3 – o 807
2011-10-25 03:30:29 C 23 45 33.80 -45 03 45.2 – o 807
2011-10-26 00:28:17 C 23 42 04.23 -44 56 53.7 – o 807
2011-10-26 00:34:03 C 23 42 03.26 -44 56 51.8 – o 807
2011-10-26 00:39:49 C 23 42 02.26 -44 56 50.1 – o 807
2011-10-26 00:45:36 C 23 42 01.28 -44 56 48.0 – o 807
2011-10-27 11:34:09 C 23 36 20.99 -44 43 11.4 – o 474
2011-10-27 11:37:00 C 23 36 20.54 -44 43 10.2 – o 474
2011-10-27 11:39:40 C 23 36 20.07 -44 43 09.4 – o 474
2011-11-04 00:07:48 C 23 10 51.84 -42 57 01.9 – o 807
2011-11-04 00:16:43 C 23 10 50.68 -42 56 55.8 – o 807
2011-11-04 00:25:37 C 23 10 49.55 -42 56 49.3 – o 807
2011-11-12 01:34:20 C 22 50 40.47 -40 16 47.4 – o 807
2011-11-12 01:44:50 C 22 50 39.46 -40 16 37.6 – o 807
2011-11-18 11:59:26 C 22 39 04.83 -37 49 29.5 – r E12
2011-11-18 12:06:32 C 22 39 04.30 -37 49 22.2 – r E12
2011-11-26 00:25:49 C 22 29 18.03 -34 45 59.7 – o 807
2011-11-26 00:33:16 C 22 29 17.67 -34 45 51.9 – o 807
2011-11-26 00:40:44 C 22 29 17.30 -34 45 44.0 – o 807
2011-12-09 01:03:12 C 22 17 12.56 -29 15 31.1 – o 807
2011-12-09 01:14:44 C 22 17 12.10 -29 15 18.4 – o 807
2011-12-09 01:26:42 C 22 17 11.62 -29 15 05.2 – o 807
2012-09-09 02:39:54 C 04 14 13.03 -09 07 38.0 – o 033
2012-09-09 02:51:20 C 04 14 13.94 -09 07 45.4 – o 033
2012-09-09 03:02:48 C 04 14 14.78 -09 07 52.7 – o 033
2012-09-09 03:14:15 C 04 14 15.68 -09 08 00.1 – o 033