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
2011-03-23 20:19:56 C 09 18 31.78 +21 49 32.9 o 639
2011-03-23 20:30:45 C 09 18 34.31 +21 47 50.6 o 639
2011-03-23 22:13:40 C 09 18 58.25 +21 31 49.2 u 160
2011-03-23 22:15:20 C 09 18 58.64 +21 31 33.4 u 160
2011-03-23 22:17:01 C 09 18 59.03 +21 31 17.5 u 160
2011-03-24 21:45:52 C 09 24 28.65 +17 59 07.6 o J16
2011-03-24 21:53:14 C 09 24 30.16 +17 58 03.9 o J16
2011-03-24 21:55:47 C 09 24 29.61 +17 57 51.8 u 160
2011-03-24 21:57:22 C 09 24 29.96 +17 57 37.9 u 160
2011-03-24 21:59:04 C 09 24 30.30 +17 57 23.2 u 160
2011-03-24 22:03:48 C 09 24 32.37 +17 56 32.2 o J16
2011-03-25 02:51:50 C 09 25 37.16 +17 15 37.9 r 703
2011-03-25 03:01:36 C 09 25 39.10 +17 14 14.7 r 703
2011-03-25 03:11:30 C 09 25 41.08 +17 12 50.9 r 703
2011-03-25 03:21:22 C 09 25 42.99 +17 11 27.0 r 703
2011-03-25 21:34:31 C 09 29 26.29 +14 41 02.0 c A24
2011-03-25 21:46:23 C 09 29 28.48 +14 39 27.2 c A24
2011-03-25 21:53:53 C 09 29 29.85 +14 38 27.4 c A24
2011-03-25 21:59:13 C 09 29 30.84 +14 37 44.5 c A24
2011-03-25 22:07:21 C 09 29 32.34 +14 36 39.5 c A24
2011-03-25 22:13:22 C 09 29 33.44 +14 35 51.8 c A24
2011-03-25 22:32:01 C 09 29 36.90 +14 33 23.1 c A24
2011-03-26 18:45:14 C 09 33 29.41 +11 58 31.5 c A53
2011-03-26 18:46:59 C 09 33 29.73 +11 58 18.2 c A53
2011-03-26 18:49:02 C 09 33 30.05 +11 58 03.1 c A53
2011-03-26 18:51:06 C 09 33 30.41 +11 57 47.5 c A53
2011-03-26 18:53:10 C 09 33 30.75 +11 57 32.9 c A53
2011-03-30 21:12:42 C 09 48 29.68 +01 53 39.1 c A53
2011-03-30 21:15:06 C 09 48 29.96 +01 53 26.8 c A53
2011-03-30 21:17:34 C 09 48 30.26 +01 53 14.6 c A53
2011-03-30 21:20:02 C 09 48 30.55 +01 53 02.0 c A53
2011-03-30 21:40:16 C 09 48 33.02 +01 51 19.6 c A24
2011-03-30 21:40:39 C 09 48 33.07 +01 51 17.6 c A24
2011-03-30 21:41:23 C 09 48 33.17 +01 51 14.1 c A24
2011-03-31 21:35:52 C 09 51 32.74 -00 03 52.3 c A24
2011-03-31 21:50:26 C 09 51 34.37 -00 04 59.3 c A24
2011-03-31 21:59:20 C 09 51 35.36 -00 05 40.1 c A24
2011-03-31 22:11:28 C 09 51 36.70 -00 06 35.6 c A24
2011-03-31 22:20:21 C 09 51 37.70 -00 07 16.5 c A24
2011-03-31 22:34:56 C 09 51 39.33 -00 08 23.5 c A24
2011-04-01 21:13:41 C 09 54 19.49 -01 47 47.4 c A24
2011-04-01 21:27:47 C 09 54 20.96 -01 48 46.6 c A24
2011-04-01 21:32:44 C 09 54 21.47 -01 49 07.3 c A24
2011-04-01 21:51:47 C 09 54 23.44 -01 50 27.5 c A24
2011-04-01 21:56:45 C 09 54 23.96 -01 50 48.3 c A24
2011-04-01 22:10:51 C 09 54 25.45 -01 51 47.3 c A24
2011-04-02 21:35:11 C 09 57 01.10 -03 25 40.6 c A24
2011-04-02 21:35:56 C 09 57 01.17 -03 25 43.5 c A24
2011-04-02 21:36:40 C 09 57 01.25 -03 25 46.4 c A24
2011-04-04 02:14:26 C 10 00 00.85 -05 10 04.9 u I15