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
2011-04-04 02:18:50 C 10 00 01.25 -05 10 20.0 u I15
2011-04-04 02:23:15 C 10 00 01.65 -05 10 35.1 u I15
2011-04-04 04:47:29 C 10 00 16.18 -05 18 46.9 17.0 c 704
2011-04-04 05:04:50 C 10 00 17.73 -05 19 46.0 17.3 c 704
2011-04-04 05:22:04 C 10 00 19.29 -05 20 45.5 17.1 c 704
2011-04-04 05:39:51 C 10 00 20.90 -05 21 46.0 17.3 c 704
2011-04-05 04:24:13 C 10 02 35.84 -06 36 20.5 17.0 c 704
2011-04-05 04:42:39 C 10 02 37.42 -06 37 19.4 16.9 c 704
2011-04-05 05:01:03 C 10 02 38.99 -06 38 17.4 16.8 c 704
2011-04-05 05:19:13 C 10 02 40.56 -06 39 14.0 17.1 c 704
2011-04-05 05:37:12 C 10 02 42.13 -06 40 10.5 17.1 c 704
2011-04-05 22:07:08 C 10 04 15.79 -07 30 33.2 c A24
2011-04-05 22:20:59 C 10 04 16.98 -07 31 14.0 c A24
2011-04-05 22:30:18 C 10 04 17.79 -07 31 41.4 c A24
2011-04-05 22:54:00 C 10 04 19.84 -07 32 51.0 c A24
2011-04-05 23:03:19 C 10 04 20.65 -07 33 18.5 c A24
2011-04-05 23:17:09 C 10 04 21.83 -07 33 59.2 c A24
2011-04-06 22:09:46 C 10 06 27.67 -08 38 50.8 c A24
2011-04-06 22:23:09 C 10 06 28.77 -08 39 27.1 c A24
2011-04-06 22:32:10 C 10 06 29.51 -08 39 51.6 c A24
2011-04-06 22:55:06 C 10 06 31.40 -08 40 53.4 c A24
2011-04-08 22:13:13 C 10 10 37.26 -10 39 47.5 c A24
2011-04-08 22:29:00 C 10 10 38.47 -10 40 24.0 c A24
2011-04-08 22:33:16 C 10 10 38.79 -10 40 33.8 c A24
2011-04-08 22:39:36 C 10 10 39.29 -10 40 48.5 c A24
2011-04-08 23:06:31 C 10 10 41.35 -10 41 50.8 c A24
2011-04-08 23:13:14 C 10 10 41.87 -10 42 06.3 c A24
2011-04-08 23:17:07 C 10 10 42.19 -10 42 15.7 c A24
2011-04-08 23:32:53 C 10 10 43.43 -10 42 52.2 c A24
2011-04-11 04:28:17 C 10 15 01.66 -12 35 24.1 17.3 c 704
2011-04-11 04:46:19 C 10 15 02.91 -12 35 58.9 17.4 c 704
2011-04-11 05:04:29 C 10 15 04.24 -12 36 34.2 17.5 c 704
2011-04-11 05:22:20 C 10 15 05.46 -12 37 09.1 17.4 c 704
2011-04-11 05:39:54 C 10 15 06.71 -12 37 43.1 17.3 c 704
2011-04-12 04:09:57 C 10 16 52.30 -13 20 06.0 16.9 c 704
2011-04-12 04:26:55 C 10 16 53.54 -13 20 36.2 18.3 c 704
2011-04-12 04:44:13 C 10 16 54.60 -13 21 07.8 17.6 c 704
2011-04-12 05:03:55 C 10 16 55.97 -13 21 43.0 17.4 c 704
2011-04-12 05:20:49 C 10 16 57.15 -13 22 14.1 17.9 c 704
2019-07-14 14:14:01 C 01 34 40.477 +05 39 42.66 U F51
2019-07-14 14:20:49 C 01 34 40.885 +05 39 46.96 U F51
2019-07-14 14:34:28 C 01 34 41.720 +05 39 55.67 U F51
2019-08-30 10:29:09 C 02 47 26.07 +21 27 37.9 U I41
2019-08-30 10:46:29 C 02 47 27.22 +21 27 58.9 U I41
2019-08-31 11:06:24 C 02 49 08.12 +21 57 15.2 U I41
2019-08-31 11:07:42 C 02 49 08.21 +21 57 16.6 U I41
2019-09-05 10:14:24 C 02 57 32.87 +24 29 54.2 V 703
2019-09-05 10:21:58 C 02 57 33.31 +24 30 04.7 V 703
2019-09-05 10:29:33 C 02 57 33.77 +24 30 13.8 V 703
2019-09-05 10:37:07 C 02 57 34.33 +24 30 25.1 V 703