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 23:12:55 C 21 43 29.00 -10 06 20.5 o 152
2008-08-01 23:13:37 C 21 43 29.01 -10 06 23.4 o 069
2008-08-01 23:14:20 C 21 43 29.04 -10 06 25.8 o 069
2008-08-01 23:15:01 C 21 43 28.96 -10 06 28.0 o 069
2008-08-01 23:15:26 C 21 43 28.97 -10 06 29.4 o 152
2008-08-01 23:15:44 C 21 43 28.98 -10 06 29.5 o 069
2008-08-01 23:16:27 C 21 43 29.01 -10 06 32.7 o 069
2008-08-01 23:17:09 C 21 43 29.03 -10 06 35.0 o 069
2008-08-01 23:17:51 C 21 43 29.04 -10 06 37.0 o 069
2008-08-01 23:18:05 C 21 43 28.98 -10 06 38.1 o 152
2008-08-01 23:18:35 C 21 43 29.01 -10 06 39.4 o 069
2008-08-01 23:19:16 C 21 43 29.01 -10 06 42.0 o 069
2008-08-01 23:19:58 C 21 43 29.02 -10 06 44.1 o 069
2008-08-01 23:20:42 C 21 43 29.01 -10 06 46.8 o 069
2008-08-01 23:21:23 C 21 43 29.00 -10 06 48.6 o 069
2008-08-01 23:23:09 C 21 43 29.04 -10 06 54.7 o 069
2008-08-01 23:23:51 C 21 43 29.00 -10 06 56.7 o 069
2008-08-01 23:24:33 C 21 43 29.03 -10 06 59.8 o 069
2008-08-01 23:25:16 C 21 43 29.02 -10 07 01.8 o 069
2008-08-01 23:25:59 C 21 43 29.06 -10 07 03.7 o 069
2008-08-01 23:27:23 C 21 43 29.05 -10 07 08.9 o 069
2008-08-01 23:28:06 C 21 43 29.06 -10 07 10.4 o 069
2008-08-01 23:28:47 C 21 43 29.04 -10 07 13.3 o 069
2008-08-01 23:29:30 C 21 43 29.06 -10 07 15.9 o 069
2008-08-01 23:30:13 C 21 43 29.04 -10 07 18.2 o 069
2008-08-01 23:30:23 C 21 43 28.93 -10 07 18.9 o 152
2008-08-01 23:30:55 C 21 43 29.02 -10 07 20.3 o 069
2008-08-01 23:31:37 C 21 43 29.03 -10 07 22.5 o 069
2008-08-01 23:32:20 C 21 43 29.01 -10 07 25.2 o 069
2008-08-01 23:33:02 C 21 43 29.03 -10 07 27.9 o 069
2008-08-01 23:34:28 C 21 43 29.03 -10 07 32.1 o 069
2008-08-01 23:35:09 C 21 43 29.04 -10 07 34.6 o 069
2008-08-01 23:35:43 C 21 43 28.98 -10 07 34.9 o 152
2008-08-01 23:35:52 C 21 43 29.01 -10 07 36.6 o 069
2008-08-01 23:36:35 C 21 43 29.03 -10 07 39.2 o 069
2008-08-01 23:37:26 C 21 43 28.95 -10 07 41.9 o 152
2008-08-01 23:37:46 C 21 43 29.02 -10 07 43.1 o 069
2008-08-01 23:38:29 C 21 43 29.05 -10 07 45.6 o 069
2008-08-01 23:39:12 C 21 43 29.07 -10 07 47.7 o 069
2008-08-01 23:39:53 C 21 43 29.02 -10 07 50.3 o 069
2008-08-01 23:40:37 C 21 43 29.05 -10 07 51.9 o 069
2008-08-01 23:41:19 C 21 43 29.04 -10 07 54.6 o 069
2008-08-01 23:42:00 C 21 43 29.04 -10 07 57.4 o 069
2008-08-01 23:42:44 C 21 43 29.09 -10 07 59.4 o 069
2008-08-01 23:43:26 C 21 43 29.05 -10 08 01.8 o 069
2008-08-01 23:44:08 C 21 43 29.05 -10 08 04.4 o 069
2008-08-01 23:44:51 C 21 43 29.05 -10 08 06.5 o 069
2008-08-01 23:45:33 C 21 43 29.01 -10 08 08.8 o 069
2008-08-01 23:46:15 C 21 43 29.05 -10 08 11.2 o 069
2008-08-01 23:46:58 C 21 43 29.04 -10 08 13.4 o 069