11885 Summanus (1990 SS)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4745418473 ± 1.74e-08
Semi-major axis (a)1.7033081412 AU ± 1.42e-09
Inclination (i)19.43143433° ± 6.27e-06
Long. of Asc. Node (Ω)359.76286922° ± 3.85e-06
Arg. of Perihelion (ω)116.22731299° ± 5.91e-06
Mean Anomaly (M)236.65290078° ± 3.86e-06
Mean Motion (n)0.4433762673°/day ± 5.56e-10
Perihelion dist (q)0.89501715 AU ± 2.97e-08
Aphelion dist (Q)2.51159913 AU ± 2.98e-08
Orbital Period2.22300190 yr ± 2.79e-09
Physical Parameters
H (abs. magnitude)18.52
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.383″
Uncertainty0
Orbit TypeApollo
MOID0.067100 AU
Observations Used343
Oppositions18
Arc Total1990-2023
First Observation Used1990-09-25
Last Observation Used2023-09-04
Observations (398)
Date Type RA Dec Mag Band Observatory
1999-09-14 01:07:15 C 03 18 56.42 +30 12 40.7 d 046
1999-09-14 01:09:52 C 03 18 56.56 +30 12 45.4 d 046
1999-09-14 01:12:49 C 03 18 56.90 +30 12 50.1 d 046
1999-09-14 01:19:50 C 03 18 57.47 +30 13 02.0 d 046
1999-09-14 01:22:41 C 03 18 57.73 +30 13 06.0 d 046
1999-10-19 18:17:08 C 06 00 54.35 +64 59 42.0 557
1999-10-19 18:22:53 C 06 00 57.27 +64 59 57.0 557
1999-10-20 10:05:13 C 06 08 54.58 +65 41 20.0 19.2 a 704
1999-10-20 10:27:39 C 06 09 05.90 +65 42 18.3 19.2 a 704
1999-10-20 10:49:57 C 06 09 17.22 +65 43 15.7 19.6 a 704
1999-10-20 11:12:21 C 06 09 28.59 +65 44 13.7 19.4 a 704
1999-10-20 11:34:48 C 06 09 40.03 +65 45 10.9 19.3 a 704
2010-09-04 09:15:07 C 00 46 51.65 +00 37 32.2 19.7 c 704
2010-09-04 09:33:33 C 00 46 50.72 +00 37 38.2 19.8 c 704
2010-09-04 09:52:11 C 00 46 49.76 +00 37 43.9 19.7 c 704
2010-09-04 10:10:49 C 00 46 48.78 +00 37 49.6 20.2 c 704
2010-09-04 10:29:18 C 00 46 47.83 +00 37 55.5 20.1 c 704
2010-09-06 02:07:41 C 00 44 47.16 +00 49 43.8 r J75
2010-09-06 02:26:24 C 00 44 46.16 +00 49 50.0 r J75
2010-09-06 02:45:04 C 00 44 45.10 +00 49 55.4 r J75
2010-09-11 08:01:00 C 00 37 11.41 +01 28 35.6 o 291
2010-09-11 08:06:26 C 00 37 11.02 +01 28 37.4 o 291
2010-09-11 08:11:54 C 00 37 10.63 +01 28 39.1 o 291
2010-10-02 07:37:11 C 23 49 22.65 +04 29 44.2 19.2 c 704
2010-10-02 07:56:09 C 23 49 20.37 +04 29 51.6 18.9 c 704
2010-10-02 08:14:53 C 23 49 18.13 +04 29 58.9 19.3 c 704
2010-10-03 19:15:38 C 23 45 12.33 +04 44 05.2 u 240
2010-10-03 19:20:56 C 23 45 11.70 +04 44 07.3 u 240
2010-10-03 19:26:14 C 23 45 11.06 +04 44 09.7 u 240
2010-10-03 19:31:33 C 23 45 10.41 +04 44 11.8 u 240
2010-10-03 19:36:19 C 23 45 09.82 +04 44 13.7 u 240
2010-10-03 19:49:03 C 23 45 08.27 +04 44 18.7 u 240
2010-10-07 05:13:22 C 23 35 24.64 +05 17 58.8 19.3 c 704
2010-10-07 05:33:07 C 23 35 22.17 +05 18 06.9 19.7 c 704
2010-10-07 05:52:16 C 23 35 19.75 +05 18 15.1 19.4 c 704
2010-10-07 06:11:27 C 23 35 17.42 +05 18 22.9 19.4 c 704
2010-10-07 06:30:41 C 23 35 15.03 +05 18 30.8 19.3 c 704
2010-10-09 05:19:25 C 23 29 37.07 +05 38 14.3 18.4 c 704
2010-10-09 05:38:47 C 23 29 34.73 +05 38 22.7 18.8 c 704
2010-10-09 05:58:11 C 23 29 32.28 +05 38 30.6 18.7 c 704
2010-10-09 06:17:40 C 23 29 29.85 +05 38 39.0 18.5 c 704
2010-10-09 06:37:13 C 23 29 27.44 +05 38 47.5 18.8 c 704
2010-10-12 05:28:13 C 23 20 58.20 +06 09 08.8 r 703
2010-10-12 05:38:11 C 23 20 56.94 +06 09 12.5 r 703
2010-10-12 05:48:13 C 23 20 55.71 +06 09 17.3 r 703
2010-10-12 05:58:11 C 23 20 54.45 +06 09 21.6 r 703
2010-11-01 03:51:27 C 22 32 22.27 +09 48 12.7 r 703
2010-11-01 04:02:59 C 22 32 21.30 +09 48 17.4 r 703
2010-11-01 04:14:26 C 22 32 20.40 +09 48 23.8 r 703
2010-11-01 04:25:59 C 22 32 19.53 +09 48 27.8 r 703