856574 (2011 UG256)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3504333763 ± 5.30e-08
Semi-major axis (a)1.9603808547 AU ± 2.47e-09
Inclination (i)26.19732186° ± 1.14e-05
Long. of Asc. Node (Ω)222.66820414° ± 5.05e-06
Arg. of Perihelion (ω)132.82252036° ± 2.32e-05
Mean Anomaly (M)64.62685053° ± 1.56e-05
Mean Motion (n)0.3590885832°/day ± 6.80e-10
Perihelion dist (q)1.27339797 AU ± 1.04e-07
Aphelion dist (Q)2.64736374 AU ± 1.04e-07
Orbital Period2.74479983 yr ± 5.19e-09
Physical Parameters
H (abs. magnitude)20.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.283″
Uncertainty0
Orbit TypeAmor
MOID0.354870 AU
Observations Used181
Oppositions7
Arc Total2011-2022
First Observation Used2011-10-31
Last Observation Used2022-12-14
Observations (183)
Date Type RA Dec Mag Band Observatory
2011-11-03 02:26:51 C 02 38 09.60 +18 46 53.1 o 807
2011-11-03 02:50:42 C 02 38 09.79 +18 45 19.1 o G48
2011-11-03 02:58:41 C 02 38 09.67 +18 44 56.0 o G48
2011-11-03 03:06:33 C 02 38 09.63 +18 44 34.7 o G48
2011-11-04 03:38:24 C 02 37 54.15 +17 34 21.1 o 807
2011-11-04 03:51:11 C 02 37 53.96 +17 33 44.6 o 807
2011-11-04 04:03:26 C 02 37 53.77 +17 33 09.6 o 807
2011-11-06 04:13:52 C 02 37 26.63 +15 17 26.5 t H21
2011-11-06 04:29:11 C 02 37 26.50 +15 16 44.2 t H21
2011-11-06 04:35:01 C 02 37 26.37 +15 16 28.1 t H21
2011-11-06 07:26:52 C 02 37 24.37 +15 08 37.6 o 291
2011-11-06 07:28:31 C 02 37 24.36 +15 08 33.0 o 291
2011-11-06 07:30:11 C 02 37 24.34 +15 08 28.3 o 291
2011-11-15 09:23:04 C 02 36 00.62 +06 12 24.5 o 291
2011-11-15 09:25:11 C 02 36 00.62 +06 12 20.1 o 291
2011-11-15 09:27:16 C 02 36 00.58 +06 12 15.5 o 291
2011-11-16 00:12:22 C 02 35 58.55 +05 40 58.0 t 204
2011-11-16 00:31:05 C 02 35 58.45 +05 40 18.8 t 204
2011-11-16 00:49:50 C 02 35 58.34 +05 39 39.5 t 204
2011-11-16 08:10:39 C 02 35 57.35 +05 24 26.8 o 291
2011-11-16 08:12:49 C 02 35 57.33 +05 24 22.7 o 291
2011-11-16 08:14:59 C 02 35 57.31 +05 24 18.2 o 291
2011-11-17 03:17:24 C 02 35 56.52 +04 45 28.2 o 291
2011-11-17 03:19:35 C 02 35 56.51 +04 45 23.8 o 291
2011-11-17 03:21:45 C 02 35 56.50 +04 45 19.5 o 291
2011-11-22 09:03:10 C 02 36 03.606 +00 57 18.44 L F51
2011-11-22 10:16:51 C 02 36 03.520 +00 55 19.01 L F51
2011-11-22 10:37:34 C 02 36 03.514 +00 54 45.45 L F51
2011-11-26 06:22:42 C 02 36 35.77 -01 21 31.0 o 291
2011-11-26 06:25:54 C 02 36 35.75 -01 21 35.7 o 291
2011-11-26 06:29:06 C 02 36 35.81 -01 21 39.8 o 291
2011-11-26 13:01:50 C 02 36 38.71 -01 30 07.8 o 474
2011-11-26 13:04:40 C 02 36 38.74 -01 30 11.8 o 474
2011-11-26 13:07:20 C 02 36 38.75 -01 30 15.5 o 474
2011-11-27 03:42:31 C 02 36 47.12 -01 49 47.2 o 291
2011-11-27 03:45:49 C 02 36 47.12 -01 49 51.3 o 291
2011-11-27 03:49:08 C 02 36 47.16 -01 49 55.7 o 291
2011-11-29 02:41:03 C 02 37 15.50 -02 47 44.9 o 291
2011-11-29 02:44:40 C 02 37 15.50 -02 47 49.6 o 291
2011-11-29 02:48:21 C 02 37 15.54 -02 47 53.4 o 291
2011-11-30 03:26:34 C 02 37 32.71 -03 16 01.1 o 291
2011-11-30 03:30:24 C 02 37 32.74 -03 16 05.1 o 291
2011-11-30 03:34:13 C 02 37 32.75 -03 16 10.1 o 291
2011-12-25 02:12:34 C 02 52 40.11 -08 41 08.0 o H21
2011-12-25 02:38:56 C 02 52 41.03 -08 41 11.0 o H21
2011-12-25 03:09:04 C 02 52 42.05 -08 41 14.5 o H21
2016-05-05 10:21:38 C 13 44 03.725 -16 25 17.54 V T12
2019-04-25 13:35:37 C 16 59 49.648 -11 07 52.46 V F51
2019-04-25 13:35:37 C 16 59 49.642 -11 07 52.29 V F51
2019-05-02 11:58:13 C 16 57 07.512 -08 44 22.77 V F51