428694 (2008 OS9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6480023155 ± 2.14e-08
Semi-major axis (a)1.6012134794 AU ± 2.68e-09
Inclination (i)19.14094460° ± 4.92e-06
Long. of Asc. Node (Ω)133.37122319° ± 1.89e-06
Arg. of Perihelion (ω)288.35811709° ± 3.37e-06
Mean Anomaly (M)161.11502242° ± 4.95e-06
Mean Motion (n)0.4864502378°/day ± 1.22e-09
Perihelion dist (q)0.56362344 AU ± 3.43e-08
Aphelion dist (Q)2.63880352 AU ± 3.45e-08
Orbital Period2.02616055 yr ± 5.08e-09
Physical Parameters
H (abs. magnitude)19.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.365″
Uncertainty0
Orbit TypeApollo
MOID0.057708 AU
Observations Used726
Oppositions9
Arc Total2008-2025
First Observation Used2008-07-25
Last Observation Used2025-04-25
Observations (785)
Date Type RA Dec Mag Band Observatory
2008-08-01 22:28:43 C 21 43 28.95 -10 03 54.9 o 069
2008-08-01 22:29:26 C 21 43 29.00 -10 03 57.3 o 069
2008-08-01 22:29:36 C 21 43 28.84 -10 03 58.3 o 152
2008-08-01 22:30:07 C 21 43 28.95 -10 03 59.3 o 069
2008-08-01 22:30:50 C 21 43 28.98 -10 04 02.5 o 069
2008-08-01 22:31:33 C 21 43 29.00 -10 04 05.0 o 069
2008-08-01 22:32:14 C 21 43 28.97 -10 04 06.5 o 069
2008-08-01 22:32:57 C 21 43 28.95 -10 04 09.0 o 069
2008-08-01 22:33:40 C 21 43 28.95 -10 04 11.6 o 069
2008-08-01 22:34:22 C 21 43 28.94 -10 04 14.1 o 069
2008-08-01 22:35:04 C 21 43 28.94 -10 04 15.9 o 069
2008-08-01 22:35:23 C 21 43 28.79 -10 04 18.4 o 152
2008-08-01 22:35:48 C 21 43 28.96 -10 04 18.2 o 069
2008-08-01 22:36:29 C 21 43 28.98 -10 04 20.9 o 069
2008-08-01 22:37:11 C 21 43 28.98 -10 04 22.5 o 069
2008-08-01 22:39:11 C 21 43 28.96 -10 04 29.7 o 069
2008-08-01 22:39:53 C 21 43 28.98 -10 04 32.0 o 069
2008-08-01 22:40:12 C 21 43 28.78 -10 04 41.0 o 152
2008-08-01 22:40:35 C 21 43 28.96 -10 04 34.1 o 069
2008-08-01 22:41:19 C 21 43 28.98 -10 04 37.1 o 069
2008-08-01 22:42:00 C 21 43 28.95 -10 04 39.6 o 069
2008-08-01 22:42:42 C 21 43 28.97 -10 04 41.4 o 069
2008-08-01 22:43:26 C 21 43 28.98 -10 04 43.4 o 069
2008-08-01 22:44:07 C 21 43 28.96 -10 04 46.3 o 069
2008-08-01 22:44:50 C 21 43 28.98 -10 04 47.9 o 069
2008-08-01 22:45:21 C 21 43 28.94 -10 04 49.3 o 152
2008-08-01 22:45:33 C 21 43 28.99 -10 04 51.0 o 069
2008-08-01 22:46:14 C 21 43 28.96 -10 04 53.1 o 069
2008-08-01 22:46:57 C 21 43 29.00 -10 04 55.3 o 069
2008-08-01 22:47:40 C 21 43 28.99 -10 04 57.5 o 069
2008-08-01 22:48:23 C 21 43 29.00 -10 05 00.1 o 069
2008-08-01 22:49:04 C 21 43 29.01 -10 05 02.6 o 069
2008-08-01 22:49:47 C 21 43 28.96 -10 05 04.6 o 069
2008-08-01 22:50:30 C 21 43 28.98 -10 05 06.9 o 069
2008-08-01 22:50:59 C 21 43 29.01 -10 05 08.2 o 152
2008-08-01 22:51:11 C 21 43 29.00 -10 05 09.2 o 069
2008-08-01 22:51:55 C 21 43 28.98 -10 05 10.9 o 069
2008-08-01 22:52:37 C 21 43 28.97 -10 05 14.1 o 069
2008-08-01 22:53:45 C 21 43 28.93 -10 05 17.4 o 152
2008-08-01 22:56:46 C 21 43 28.95 -10 05 26.2 o 152
2008-08-01 23:06:35 C 21 43 28.99 -10 05 59.4 o 152
2008-08-01 23:07:59 C 21 43 29.02 -10 06 04.5 o 069
2008-08-01 23:08:38 C 21 43 28.97 -10 06 06.1 o 152
2008-08-01 23:08:40 C 21 43 29.02 -10 06 06.8 o 069
2008-08-01 23:09:23 C 21 43 29.02 -10 06 09.6 o 069
2008-08-01 23:10:06 C 21 43 29.01 -10 06 11.4 o 069
2008-08-01 23:10:47 C 21 43 29.03 -10 06 14.1 o 069
2008-08-01 23:11:30 C 21 43 29.06 -10 06 15.8 o 069
2008-08-01 23:12:13 C 21 43 28.99 -10 06 18.6 o 069
2008-08-01 23:12:54 C 21 43 29.02 -10 06 20.9 o 069