2011 UD21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.0303441000
Semi-major axis (a)0.9786569000 AU
Inclination (i)1.06068000°
Long. of Asc. Node (Ω)22.34326000°
Arg. of Perihelion (ω)209.87501000°
Mean Anomaly (M)350.31317000°
Mean Motion (n)1.0180247800°/day
Perihelion dist (q)0.94896040 AU
Aphelion dist (Q)1.00835340 AU
Orbital Period0.96815680 yr
Physical Parameters
H (abs. magnitude)28.50
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.560″
Uncertainty3
Orbit TypeAten
MOID0.002654 AU
Observations Used83
Oppositions1
Arc Total
First Observation Used
Last Observation Used2011-11-24
Observations (90)
Date Type RA Dec Mag Band Observatory
2011-10-20 23:52:42 C 02 35 21.61 +21 15 02.0 t 204
2011-10-23 07:15:54 C 01 56 53.55 +22 45 59.2 u H36
2011-10-23 07:19:33 C 01 56 50.55 +22 46 01.7 u H36
2011-10-23 07:23:31 C 01 56 47.26 +22 46 04.4 u H36
2011-10-26 05:29:08 C 01 22 38.44 +23 44 07.8 o 807
2011-10-26 05:37:14 C 01 22 33.56 +23 44 05.8 o 807
2011-10-26 05:45:20 C 01 22 28.73 +23 44 03.2 o 807
2011-10-26 05:46:07 C 01 23 11.09 +23 30 00.6 o G56
2011-10-26 06:03:16 C 01 23 00.93 +23 30 14.7 o G56
2011-10-26 06:21:59 C 01 22 49.92 +23 30 24.9 o G56
2011-10-27 00:25:05 C 01 15 27.48 +23 32 58.5 u 104
2011-10-27 00:29:37 C 01 15 25.18 +23 32 57.0 u 104
2011-10-27 00:34:07 C 01 15 22.89 +23 32 56.0 u 104
2011-10-29 00:00:37 C 01 00 24.77 +23 37 22.4 t 204
2011-10-29 00:20:39 C 01 00 16.61 +23 37 13.3 t 204
2011-10-29 00:40:40 C 01 00 08.62 +23 37 03.0 t 204
2011-10-29 07:04:50 C 00 58 25.48 +23 38 38.1 u H36
2011-10-29 07:23:20 C 00 58 17.90 +23 38 27.9 u H36
2011-10-29 07:32:28 C 00 58 14.40 +23 38 23.3 u H36
2011-10-30 07:00:37 C 00 52 38.73 +23 38 36.4 t G58
2011-10-30 07:12:05 C 00 52 34.15 +23 38 34.1 t G58
2011-10-30 07:18:43 C 00 52 31.57 +23 38 32.4 t G58
2011-10-31 02:17:58 C 00 48 53.50 +23 35 53.3 o G53
2011-10-31 02:31:56 C 00 48 49.31 +23 36 02.1 o G53
2011-10-31 02:46:03 C 00 48 44.88 +23 36 10.8 o G53
2011-10-31 02:59:34 C 00 48 40.62 +23 36 19.4 o G53
2011-10-31 03:13:17 C 00 48 36.17 +23 36 26.5 o G53
2011-11-02 02:11:23 C 00 39 31.22 +23 31 50.7 o H21
2011-11-02 02:25:43 C 00 39 27.00 +23 31 53.5 o H21
2011-11-02 02:40:22 C 00 39 22.59 +23 31 54.8 o H21
2011-11-05 02:43:35 C 00 29 18.25 +23 22 40.1 o H21
2011-11-05 03:03:04 C 00 29 13.76 +23 22 39.6 o H21
2011-11-05 03:19:25 C 00 29 09.91 +23 22 38.6 o H21
2011-11-17 05:26:44 C 00 13 05.58 +22 51 04.9 o H01
2011-11-17 05:35:11 C 00 13 04.82 +22 51 02.4 o H01
2011-11-17 05:45:54 C 00 13 03.91 +22 50 59.0 o H01
2011-11-17 05:59:15 C 00 13 02.80 +22 50 54.6 o H01
2011-11-24 05:28:12 C 00 13 39.004 +22 43 00.20 o 568
2011-11-24 05:33:35 C 00 13 38.684 +22 43 00.50 o 568
2011-11-24 05:38:57 C 00 13 38.356 +22 43 00.86 o 568