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
2010-11-04 03:29:19 C 22 27 11.31 +10 23 31.1 20.2 c 704
2010-11-04 03:47:16 C 22 27 10.10 +10 23 39.4 19.9 c 704
2010-11-04 04:05:16 C 22 27 08.80 +10 23 48.9 20.3 c 704
2010-11-04 04:23:15 C 22 27 07.55 +10 23 58.4 20.1 c 704
2010-11-27 04:39:35 S 22 07 24.21 +15 40 02.1 L C51
2010-11-27 07:49:54 S 22 07 22.78 +15 42 08.2 L C51
2010-11-27 12:35:47 S 22 07 20.76 +15 45 17.2 L C51
2010-11-27 14:10:57 S 22 07 20.06 +15 46 20.8 L C51
2010-11-27 15:46:07 S 22 07 19.438 +15 47 23.89 L C51
2010-11-27 17:21:28 S 22 07 18.77 +15 48 26.6 L C51
2010-11-27 18:56:38 S 22 07 18.19 +15 49 30.7 L C51
2010-11-27 20:31:48 S 22 07 17.52 +15 50 34.6 L C51
2010-11-27 22:07:09 S 22 07 16.96 +15 51 37.5 L C51
2010-11-28 01:17:40 S 22 07 15.83 +15 53 44.4 L C51
2010-11-28 04:28:00 S 22 07 14.68 +15 55 52.5 L C51
2010-11-28 07:38:32 S 22 07 13.63 +15 57 59.0 L C51
2010-12-02 01:42:55 C 22 07 04.10 +16 59 50.7 o 691
2010-12-02 02:28:59 C 22 07 04.01 +17 00 23.0 o 691
2010-12-02 03:15:47 C 22 07 03.98 +17 00 56.0 o 691
2011-03-05 03:14:30 C 01 27 13.09 +68 55 16.7 c H06
2011-03-05 03:16:18 C 01 27 14.75 +68 55 22.3 c H06
2011-03-05 03:18:07 C 01 27 16.42 +68 55 27.4 c H06
2011-03-16 03:38:55 C 07 53 20.29 +56 00 04.2 r 703
2011-03-16 03:46:07 C 07 53 26.01 +55 58 46.8 r 703
2011-03-16 03:53:17 C 07 53 31.77 +55 57 29.7 r 703
2011-03-16 04:00:33 C 07 53 37.60 +55 56 10.8 r 703
2011-03-16 04:36:39 C 07 54 06.30 +55 49 38.3 r 703
2011-03-16 04:42:33 C 07 54 10.98 +55 48 34.1 r 703
2011-03-16 04:48:24 C 07 54 15.58 +55 47 30.5 r 703
2011-03-16 04:54:21 C 07 54 20.44 +55 46 24.8 r 703
2011-03-17 16:59:26 C 08 20 21.29 +48 58 11.1 r 168
2011-03-17 17:02:00 C 08 20 22.85 +48 57 40.7 r 168
2011-03-17 18:03:05 C 08 20 59.55 +48 45 47.8 r 168
2011-03-17 19:09:35 C 08 21 39.30 +48 32 47.4 r 168
2011-03-17 19:59:55 C 08 22 09.36 +48 22 55.6 r 168
2011-03-17 23:08:55 C 08 24 02.07 +47 45 40.8 r 168
2011-03-22 20:57:43 C 09 12 21.06 +25 38 10.7 c A53
2011-03-22 20:59:34 C 09 12 21.55 +25 37 51.5 c A53
2011-03-22 21:01:38 C 09 12 22.10 +25 37 30.8 c A53
2011-03-22 21:03:42 C 09 12 22.65 +25 37 09.8 c A53
2011-03-22 21:05:46 C 09 12 23.20 +25 36 49.0 c A53
2011-03-22 21:07:50 C 09 12 23.72 +25 36 28.2 c A53
2011-03-22 22:09:34 C 09 12 39.88 +25 26 04.6 u 160
2011-03-22 22:10:30 C 09 12 40.12 +25 25 55.3 u 160
2011-03-22 22:12:06 C 09 12 40.53 +25 25 39.2 u 160
2011-03-23 19:31:27 C 09 18 20.65 +21 57 16.9 v 434
2011-03-23 19:35:15 C 09 18 21.57 +21 56 39.8 v 434
2011-03-23 19:36:59 C 09 18 22.01 +21 56 23.6 v 434
2011-03-23 19:38:22 C 09 18 22.29 +21 56 11.0 v 434
2011-03-23 20:15:25 C 09 18 30.72 +21 50 15.3 o 639