2011 UD256

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5988969721 ± 3.37e-07
Semi-major axis (a)1.4579857974 AU ± 5.44e-08
Inclination (i)47.06166636° ± 4.05e-05
Long. of Asc. Node (Ω)216.31979156° ± 1.33e-05
Arg. of Perihelion (ω)323.05383005° ± 4.62e-05
Mean Anomaly (M)269.78799626° ± 1.89e-04
Mean Motion (n)0.5598637336°/day ± 3.13e-08
Perihelion dist (q)0.58480252 AU ± 4.92e-07
Aphelion dist (Q)2.33116908 AU ± 5.00e-07
Orbital Period1.76047532 yr ± 9.85e-08
Physical Parameters
H (abs. magnitude)19.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.395″
Uncertainty0
Orbit TypeApollo
MOID0.360303 AU
Observations Used51
Oppositions3
Arc Total2011-2018
First Observation Used2011-10-30
Last Observation Used2018-10-16
Observations (51)
Date Type RA Dec Mag Band Observatory
2011-10-30 07:44:46 C 01 57 08.82 +16 00 33.0 r G96
2011-10-30 07:54:46 C 01 57 07.84 +16 00 16.0 r G96
2011-10-30 08:04:44 C 01 57 06.87 +15 59 59.2 r G96
2011-10-30 08:14:47 C 01 57 05.90 +15 59 43.0 r G96
2011-10-30 09:09:19 C 01 57 00.39 +15 58 11.7 o 291
2011-10-30 09:11:50 C 01 57 00.14 +15 58 06.8 r G96
2011-10-30 09:12:30 C 01 57 00.07 +15 58 05.6 o 291
2011-10-30 09:15:00 C 01 56 59.82 +15 58 01.9 r G96
2011-10-30 09:15:43 C 01 56 59.78 +15 58 00.8 o 291
2011-10-30 09:18:04 C 01 56 59.46 +15 57 56.4 r G96
2011-10-30 09:21:05 C 01 56 59.24 +15 57 51.1 r G96
2011-10-31 03:23:32 C 01 55 14.35 +15 27 24.0 o 291
2011-10-31 03:27:43 C 01 55 13.94 +15 27 17.7 o 291
2011-10-31 03:31:54 C 01 55 13.60 +15 27 10.5 o 291
2011-10-31 21:54:06 C 01 53 25.76 +14 55 51.1 t J04
2011-10-31 22:10:07 C 01 53 24.11 +14 55 23.8 t J04
2011-10-31 22:27:33 C 01 53 22.35 +14 54 53.7 t J04
2011-10-31 22:37:41 C 01 53 20.83 +14 54 33.8 u B18
2011-10-31 22:42:43 C 01 53 20.32 +14 54 24.7 u B18
2011-10-31 22:47:46 C 01 53 19.79 +14 54 16.2 u B18
2011-11-14 21:32:59 C 01 22 02.08 +04 55 46.7 v 950
2011-11-14 21:34:55 C 01 22 01.89 +04 55 43.5 v 950
2011-11-14 21:36:51 C 01 22 01.70 +04 55 39.6 v 950
2011-11-14 21:38:47 C 01 22 01.53 +04 55 37.0 v 950
2011-11-14 21:40:44 C 01 22 01.38 +04 55 32.8 v 950
2011-11-14 21:42:39 C 01 22 01.21 +04 55 29.8 v 950
2011-11-14 21:44:35 C 01 22 01.03 +04 55 26.2 v 950
2011-11-14 21:46:44 C 01 22 00.87 +04 55 22.3 v 950
2011-11-14 21:48:41 C 01 22 00.72 +04 55 19.0 v 950
2011-11-15 07:55:16 C 01 21 08.67 +04 37 24.2 o 291
2011-11-15 07:58:37 C 01 21 08.33 +04 37 18.1 o 291
2011-11-15 08:01:58 C 01 21 08.03 +04 37 11.8 o 291
2011-11-16 05:56:32 C 01 19 18.56 +03 58 36.2 o 291
2011-11-16 05:59:54 C 01 19 18.17 +03 58 30.6 o 291
2011-11-16 06:03:14 C 01 19 17.97 +03 58 25.2 o 291
2011-11-30 02:39:19 C 00 56 42.23 -04 48 00.6 o 291
2011-11-30 02:42:09 C 00 56 42.02 -04 48 05.0 o 291
2011-11-30 02:44:59 C 00 56 41.88 -04 48 09.1 o 291
2011-12-30 02:03:08 C 00 43 41.88 -15 59 45.7 o 291
2011-12-30 02:14:52 C 00 43 41.99 -15 59 51.4 o 291
2011-12-30 02:26:33 C 00 43 42.13 -15 59 58.6 o 291
2014-08-26 11:23:45 C 22 59 02.562 +54 30 50.89 t 568
2014-08-26 11:41:14 C 22 59 01.014 +54 30 46.12 t 568
2014-08-27 12:25:00 C 22 56 53.187 +54 23 41.75 t 568
2014-08-27 12:40:39 C 22 56 51.813 +54 23 36.89 t 568
2014-09-03 13:46:21 C 22 42 14.904 +53 15 38.03 t 568
2014-09-03 14:02:00 C 22 42 13.541 +53 15 29.92 t 568
2014-09-04 12:03:46 C 22 40 21.087 +53 04 08.04 t 568
2018-10-16 07:14:27 C 01 56 15.34 +26 52 27.5 u H21
2018-10-16 07:31:26 C 01 56 13.91 +26 52 08.4 u H21