2011 KN9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4817741952 ± 2.99e-08
Semi-major axis (a)2.2721035975 AU ± 1.26e-08
Inclination (i)19.28881090° ± 6.03e-06
Long. of Asc. Node (Ω)218.58158818° ± 1.34e-05
Arg. of Perihelion (ω)98.63900510° ± 2.08e-05
Mean Anomaly (M)59.47292978° ± 1.51e-05
Mean Motion (n)0.2877862778°/day ± 2.39e-09
Perihelion dist (q)1.17746272 AU ± 6.83e-08
Aphelion dist (Q)3.36674448 AU ± 7.05e-08
Orbital Period3.42485504 yr ± 2.85e-08
Physical Parameters
H (abs. magnitude)18.64
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.386″
Uncertainty0
Orbit TypeAmor
MOID0.364120 AU
Observations Used294
Oppositions22
Arc Total1994-2025
First Observation Used1994-12-01
Last Observation Used2025-12-24
Observations (307)
Date Type RA Dec Mag Band Observatory
2011-08-11 03:07:30 C 17 27 34.43 +41 11 04.5 o H21
2011-08-15 03:10:13 C 17 36 46.05 +41 14 02.8 v H21
2011-08-15 03:18:17 C 17 36 46.83 +41 14 02.6 v H21
2011-08-15 03:26:21 C 17 36 47.61 +41 14 02.2 v H21
2011-08-15 22:10:22 C 17 38 42.83 +41 13 25.2 t 204
2011-08-15 22:26:29 C 17 38 44.43 +41 13 24.0 t 204
2011-08-15 22:43:27 C 17 38 46.14 +41 13 22.8 t 204
2011-08-19 20:32:49 C 17 49 04.42 +41 04 44.3 c A24
2011-08-19 20:34:54 C 17 49 04.60 +41 04 45.7 c A24
2011-08-19 21:42:19 C 17 49 12.05 +41 04 35.1 c A24
2011-08-19 21:44:23 C 17 49 12.40 +41 04 34.6 c A24
2011-08-21 20:29:26 C 17 54 45.18 +40 56 25.8 c A24
2011-08-21 20:31:31 C 17 54 45.33 +40 56 24.2 c A24
2011-08-21 21:36:27 C 17 54 52.97 +40 56 08.7 c A24
2011-08-21 21:38:32 C 17 54 53.05 +40 56 08.3 c A24
2011-08-22 20:35:52 C 17 57 42.82 +40 51 09.2 c A24
2011-08-22 20:37:57 C 17 57 42.95 +40 51 08.6 c A24
2011-08-22 21:43:19 C 17 57 50.86 +40 50 52.0 c A24
2011-08-22 21:45:25 C 17 57 51.17 +40 50 51.8 c A24
2011-08-25 20:54:48 C 18 07 01.61 +40 30 59.8 c A24
2011-08-25 22:01:54 C 18 07 10.21 +40 30 35.6 c A24
2011-08-25 22:03:58 C 18 07 10.46 +40 30 35.3 c A24
2011-08-26 20:54:11 C 18 10 15.30 +40 22 41.9 u A98
2011-08-26 21:07:44 C 18 10 17.16 +40 22 36.8 u A98
2011-09-10 20:09:48 C 19 06 26.70 +36 39 43.1 t 204
2011-09-10 20:29:41 C 19 06 30.08 +36 39 25.2 t 204
2011-09-12 02:33:02 C 19 11 46.02 +36 11 34.7 o H21
2011-09-12 02:36:35 C 19 11 46.63 +36 11 31.8 o H21
2011-09-12 02:42:17 C 19 11 47.59 +36 11 26.4 o H21
2011-09-12 02:49:43 C 19 11 48.82 +36 11 18.8 o H21
2011-09-12 20:30:51 C 19 14 56.48 +35 54 06.1 u C01
2011-09-12 20:32:15 C 19 14 56.69 +35 54 05.0 u C01
2011-09-14 20:30:17 C 19 23 32.33 +35 05 13.3 u I74
2011-09-14 20:35:31 C 19 23 33.04 +35 05 01.6 r 203
2011-09-14 20:45:57 C 19 23 34.99 +35 04 51.9 u I74
2011-09-14 21:15:35 C 19 23 40.12 +35 04 18.0 r 203
2011-09-20 20:43:33 C 19 50 03.99 +32 15 24.3 c A24
2011-09-20 20:45:37 C 19 50 04.35 +32 15 21.5 c A24
2011-09-20 22:46:00 C 19 50 26.24 +32 12 44.3 c A24
2011-09-22 20:34:05 C 19 59 01.15 +31 12 09.9 c A24
2011-09-22 20:36:10 C 19 59 01.45 +31 12 07.1 c A24
2011-09-22 22:01:57 C 19 59 17.16 +31 10 10.4 c A24
2011-09-22 22:04:05 C 19 59 17.59 +31 10 06.3 c A24
2011-09-28 19:56:50 C 20 25 56.41 +27 45 30.8 v 204
2011-09-28 20:12:07 C 20 25 59.18 +27 45 07.7 v 204
2011-10-02 20:33:42 C 20 43 54.48 +25 15 48.4 c A24
2011-10-02 20:35:46 C 20 43 54.87 +25 15 44.7 c A24
2011-10-03 20:35:51 C 20 48 19.81 +24 37 46.6 c A24
2011-10-03 20:37:56 C 20 48 20.19 +24 37 44.2 c A24
2011-10-04 19:36:31 C 20 52 32.77 +24 01 12.0 c A24