285990 (2001 SK9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7894131168 ± 2.37e-08
Semi-major axis (a)1.7854348518 AU ± 1.57e-09
Inclination (i)25.84030503° ± 6.18e-06
Long. of Asc. Node (Ω)195.52136492° ± 4.46e-06
Arg. of Perihelion (ω)34.82443230° ± 5.43e-06
Mean Anomaly (M)89.93084301° ± 3.28e-06
Mean Motion (n)0.4131390668°/day ± 5.46e-10
Perihelion dist (q)0.37598916 AU ± 4.22e-08
Aphelion dist (Q)3.19488054 AU ± 4.23e-08
Orbital Period2.38570100 yr ± 3.15e-09
Physical Parameters
H (abs. magnitude)17.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.252″
Uncertainty0
Orbit TypeApollo
MOID0.216238 AU
Observations Used463
Oppositions14
Arc Total2001-2025
First Observation Used2001-09-17
Last Observation Used2025-11-10
Observations (498)
Date Type RA Dec Mag Band Observatory
2001-09-20 10:49:53 C 01 45 08.08 +15 17 51.8 d 691
2001-09-20 10:56:19 C 01 45 07.43 +15 17 44.1 d 691
2001-09-20 11:02:16 C 01 45 06.72 +15 17 36.5 d 691
2001-09-24 10:28:05 C 01 34 51.30 +13 19 42.3 19.6 i 704
2001-09-24 10:49:31 C 01 34 48.96 +13 19 14.8 19.2 i 704
2001-09-24 11:10:57 C 01 34 46.60 +13 18 48.4 19.3 i 704
2001-10-12 04:34:48 C 00 53 33.52 +05 06 05.2 c 649
2001-10-12 04:41:27 C 00 53 32.94 +05 05 58.7 c 649
2001-10-12 04:56:07 C 00 53 31.73 +05 05 44.2 c 649
2001-10-17 06:52:18 C 00 44 09.57 +03 09 46.6 20.8 c 644
2001-10-17 07:22:17 C 00 44 07.36 +03 09 20.1 19.8 c 644
2001-10-17 07:53:08 C 00 44 05.07 +03 08 52.5 19.8 c 644
2001-10-17 10:18:55 C 00 43 54.49 +03 06 42.9 20.2 c 644
2001-10-17 10:50:14 C 00 43 52.20 +03 06 15.4 20.3 c 644
2001-10-17 11:21:24 C 00 43 50.05 +03 05 48.0 21.1 c 644
2001-11-15 04:52:45 C 00 15 50.72 -03 13 49.6 d 291
2001-11-15 04:58:40 C 00 15 50.61 -03 13 51.3 d 291
2001-11-15 05:04:16 C 00 15 50.44 -03 13 54.0 d 291
2003-01-27 01:22:30 C 02 56 01.05 -05 02 42.9 c 809
2003-01-27 01:26:01 C 02 56 01.05 -05 02 42.1 c 809
2003-01-27 01:29:32 C 02 56 01.05 -05 02 41.3 c 809
2003-01-29 01:27:36 C 02 56 07.65 -04 51 09.7 c 809
2003-01-29 01:32:07 C 02 56 07.65 -04 51 08.5 c 809
2003-01-29 01:36:36 C 02 56 07.66 -04 51 07.3 c 809
2005-11-11 13:43:09 C 07 14 57.66 -14 14 21.0 c F65
2005-11-11 13:46:39 C 07 14 57.68 -14 14 24.9 c F65
2005-11-11 13:50:10 C 07 14 57.70 -14 14 28.5 c F65
2005-11-11 13:52:00 C 07 14 57.71 -14 14 30.3 c F65
2005-12-17 10:47:11 C 06 51 18.88 -33 34 58.8 r E17
2005-12-17 10:51:15 C 06 51 18.53 -33 35 07.8 r E17
2005-12-17 10:55:19 C 06 51 18.19 -33 35 13.5 r E17
2006-01-10 11:25:11 C 05 21 43.81 -48 28 19.0 r E12
2006-01-10 11:31:18 C 05 21 42.15 -48 28 26.7 r E12
2006-01-10 11:37:27 C 05 21 40.75 -48 28 33.9 r E12
2006-01-10 11:43:35 C 05 21 39.13 -48 28 41.8 r E12
2006-10-31 07:35:06 C 01 52 48.16 -00 03 56.0 o 705
2006-10-31 07:36:17 C 01 52 48.10 -00 03 56.1 o 705
2006-10-31 07:39:52 C 01 52 47.86 -00 03 57.8 o 705
2006-11-01 07:42:16 C 01 51 23.53 -00 14 37.7 o 705
2006-11-01 07:43:27 C 01 51 23.45 -00 14 38.3 o 705
2008-09-09 18:54:56 C 14 46 30.55 +42 12 40.0 v B03
2008-09-09 19:01:51 C 14 46 35.49 +42 12 47.1 v B03
2008-09-09 19:08:53 C 14 46 40.48 +42 12 53.7 v B03
2008-09-18 00:05:42 C 17 31 11.94 +38 31 42.4 o J65
2008-09-22 17:25:48 C 18 53 40.29 +30 08 28.4 18.6 r 084
2008-09-24 21:36:54 C 19 22 58.95 +25 52 49.3 r J27
2008-09-24 21:50:59 C 19 23 06.10 +25 51 41.1 r J27
2008-09-24 22:11:51 C 19 23 16.61 +25 49 59.8 r J27
2008-09-28 20:11:02 C 20 04 13.83 +18 46 04.8 r 240
2008-09-28 20:12:23 C 20 04 14.34 +18 45 59.3 r 240