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
2011-07-29 23:28:09 C 21 41 14.17 +00 48 37.9 r J75
2011-07-29 23:45:14 C 21 41 16.18 +00 48 29.9 r J75
2011-07-30 00:01:55 C 21 41 18.11 +00 48 21.4 r J75
2011-07-30 01:13:03 C 21 41 26.30 +00 47 44.0 v I93
2011-07-30 01:23:26 C 21 41 27.53 +00 47 39.0 v I93
2011-07-30 01:38:59 C 21 41 29.33 +00 47 31.5 v I93
2011-07-30 01:43:05 C 21 41 29.53 +00 47 28.7 v 204
2011-07-30 01:48:37 C 21 41 30.16 +00 47 26.0 v 204
2011-07-30 01:49:56 C 21 41 30.62 +00 47 26.2 v I93
2011-07-30 01:54:09 C 21 41 30.83 +00 47 23.3 v 204
2011-07-30 22:14:27 C 21 44 07.30 +00 37 10.0 u J95
2011-07-30 22:19:25 C 21 44 07.89 +00 37 07.8 u J95
2011-07-30 22:30:07 C 21 44 09.20 +00 37 02.8 u J95
2011-07-30 22:31:11 C 21 44 09.16 +00 37 05.5 r 104
2011-07-30 22:36:55 C 21 44 09.83 +00 37 02.6 r 104
2011-07-30 22:54:54 C 21 44 12.51 +00 36 55.2 u J87
2011-07-30 22:58:19 C 21 44 12.93 +00 36 53.4 u J87
2011-07-30 23:01:43 C 21 44 13.32 +00 36 51.9 u J87
2011-07-31 04:31:24 C 21 44 55.46 +00 34 00.2 t H21
2011-07-31 04:36:34 C 21 44 56.08 +00 33 57.4 t H21
2011-07-31 04:41:44 C 21 44 56.70 +00 33 54.8 t H21
2011-07-31 04:46:54 C 21 44 57.32 +00 33 52.1 t H21
2011-08-01 21:52:48 C 21 50 16.10 +00 10 42.3 r A17
2011-08-01 22:09:40 C 21 50 18.20 +00 10 32.4 r A17
2011-08-01 22:26:32 C 21 50 20.28 +00 10 22.2 r A17
2011-08-01 23:37:35 C 21 50 29.07 +00 09 42.0 r 203
2011-08-02 00:20:41 C 21 50 34.35 +00 09 16.3 r 203
2011-08-02 00:26:04 C 21 50 35.34 +00 09 13.7 v I93
2011-08-02 00:51:01 C 21 50 38.37 +00 08 58.7 v I93
2011-08-02 01:28:28 C 21 50 42.93 +00 08 36.3 v I93
2011-08-02 04:59:51 C 21 51 11.94 +00 06 31.2 t H21
2011-08-02 05:03:21 C 21 51 12.37 +00 06 29.2 t H21
2011-08-02 05:06:51 C 21 51 12.79 +00 06 27.1 t H21
2011-08-02 05:09:58 C 21 51 13.18 +00 06 25.1 t H21
2011-08-02 05:13:05 C 21 51 13.57 +00 06 23.3 t H21
2011-08-02 06:31:24 C 21 51 23.88 +00 05 40.2 19.1 c 704
2011-08-02 06:48:10 C 21 51 25.95 +00 05 30.4 18.8 c 704
2011-08-02 07:04:58 C 21 51 27.97 +00 05 19.3 19.5 c 704
2011-08-02 07:21:52 C 21 51 29.99 +00 05 10.2 19.6 c 704
2011-08-02 07:38:48 C 21 51 32.06 +00 04 58.9 19.2 c 704
2011-08-02 11:37:59 C 21 52 03.083 +00 02 39.77 L F51
2011-08-02 11:58:38 C 21 52 05.555 +00 02 27.04 L F51
2011-08-02 12:19:13 C 21 52 08.021 +00 02 14.36 L F51
2011-08-03 00:08:51 C 21 53 42.40 -00 05 25.6 u 157
2011-08-03 00:13:12 C 21 53 42.91 -00 05 28.1 u 157
2011-08-03 00:17:33 C 21 53 43.46 -00 05 30.9 u 157
2011-08-03 04:41:10 C 21 54 19.68 -00 08 18.8 t H21
2011-08-03 04:46:55 C 21 54 20.41 -00 08 22.0 t H21
2011-08-03 04:52:44 C 21 54 21.15 -00 08 26.1 t H21
2011-08-08 06:50:23 C 22 10 58.85 -01 38 49.2 t H21