2011 OC18

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4380644906 ± 1.91e-08
Semi-major axis (a)2.1099917530 AU ± 2.66e-08
Inclination (i)6.90782283° ± 2.79e-06
Long. of Asc. Node (Ω)149.82224405° ± 7.00e-06
Arg. of Perihelion (ω)180.19098641° ± 2.33e-05
Mean Anomaly (M)233.31340184° ± 4.04e-05
Mean Motion (n)0.3215815613°/day ± 6.08e-09
Perihelion dist (q)1.18567929 AU ± 4.30e-08
Aphelion dist (Q)3.03430422 AU ± 5.56e-08
Orbital Period3.06493407 yr ± 5.80e-08
Physical Parameters
H (abs. magnitude)20.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.162″
Uncertainty0
Orbit TypeAmor
MOID0.172446 AU
Observations Used146
Oppositions4
Arc Total2011-2017
First Observation Used2011-07-29
Last Observation Used2017-05-27
Observations (158)
Date Type RA Dec Mag Band Observatory
2011-08-08 06:53:42 C 22 10 59.28 -01 38 51.6 t H21
2011-08-08 06:57:23 C 22 10 59.77 -01 38 54.8 t H21
2011-08-09 03:21:34 C 22 13 53.45 -01 56 11.3 o H21
2011-08-09 03:32:04 C 22 13 54.87 -01 56 20.6 o H21
2011-08-09 03:36:50 C 22 13 55.49 -01 56 24.9 o H21
2011-08-09 03:41:45 C 22 13 56.15 -01 56 28.7 o H21
2011-08-09 16:22:31 C 22 15 42.32 -02 06 36.7 o D22
2011-08-09 16:39:06 C 22 15 44.45 -02 06 51.7 o D22
2011-08-09 16:55:32 C 22 15 46.58 -02 07 06.2 o D22
2011-08-11 06:04:42 C 22 21 03.26 -02 41 35.9 o H21
2011-08-11 06:10:50 C 22 21 04.08 -02 41 41.7 o H21
2011-08-11 06:17:17 C 22 21 04.93 -02 41 47.6 o H21
2011-08-20 05:57:18 C 22 52 00.93 -06 24 48.6 t H21
2011-08-20 06:00:47 C 22 52 01.38 -06 24 52.6 t H21
2011-08-20 06:04:16 C 22 52 01.84 -06 24 56.5 t H21
2011-08-21 00:00:34 C 22 54 33.63 -06 44 57.2 r 106
2011-08-21 00:16:11 C 22 54 35.61 -06 45 14.2 r 106
2011-08-21 00:27:04 C 22 54 37.25 -06 45 26.4 t 204
2011-08-21 00:31:42 C 22 54 37.66 -06 45 31.4 r 106
2011-08-21 00:32:39 C 22 54 37.99 -06 45 32.6 t 204
2011-08-21 00:38:15 C 22 54 38.72 -06 45 39.0 t 204
2011-08-21 00:47:15 C 22 54 39.69 -06 45 49.0 r 106
2011-08-23 11:48:03 C 23 02 53.897 -07 51 39.82 L F51
2011-08-23 12:03:49 C 23 02 55.859 -07 51 57.47 L F51
2011-08-23 12:36:25 C 23 02 59.928 -07 52 34.16 L F51
2011-08-24 07:29:56 C 23 05 36.00 -08 13 59.4 t H21
2011-08-24 07:35:13 C 23 05 36.67 -08 14 05.3 t H21
2011-08-24 07:40:37 C 23 05 37.35 -08 14 11.3 t H21
2011-08-24 07:45:52 C 23 05 38.01 -08 14 17.2 t H21
2011-08-24 10:33:43 C 23 06 02.196 -08 17 12.85 L F51
2011-08-24 10:53:51 C 23 06 04.675 -08 17 35.53 L F51
2011-08-24 11:13:56 C 23 06 07.141 -08 17 58.09 L F51
2011-08-27 16:07:30 C 23 16 21.15 -09 42 32.9 o 474
2011-08-27 16:09:40 C 23 16 21.36 -09 42 34.7 o 474
2011-08-27 16:11:40 C 23 16 21.64 -09 42 37.0 o 474
2011-08-28 08:43:57 C 23 18 30.48 -10 01 46.0 t H21
2011-08-28 08:49:04 C 23 18 31.08 -10 01 51.5 t H21
2011-08-28 08:54:11 C 23 18 31.70 -10 01 57.0 t H21
2011-08-28 08:59:07 C 23 18 32.29 -10 02 02.3 t H21
2011-08-29 00:27:59 C 23 20 32.31 -10 18 53.7 o 046
2011-08-29 00:29:58 C 23 20 32.58 -10 18 55.8 o 046
2011-08-29 00:33:43 C 23 20 33.05 -10 18 59.9 o 046
2011-08-29 00:42:52 C 23 20 34.13 -10 19 09.0 o 046
2011-08-29 00:44:40 C 23 20 34.27 -10 19 11.1 o 046
2011-08-30 15:04:29 C 23 25 22.38 -10 58 50.3 o 474
2011-08-30 15:06:08 C 23 25 22.57 -10 58 52.1 o 474
2011-08-30 15:07:39 C 23 25 22.74 -10 58 53.7 o 474
2011-08-31 07:57:29 C 23 27 27.68 -11 17 26.5 18.0 c 704
2011-08-31 08:17:06 C 23 27 29.78 -11 17 46.4 18.1 c 704
2011-08-31 08:36:42 C 23 27 31.99 -11 18 06.6 18.0 c 704