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 23:47:41 C 21 43 29.03 -10 08 15.5 o 069
2008-08-01 23:48:22 C 21 43 29.06 -10 08 18.2 o 069
2008-08-01 23:49:05 C 21 43 29.05 -10 08 20.6 o 069
2008-08-01 23:49:48 C 21 43 29.04 -10 08 22.8 o 069
2008-08-01 23:50:29 C 21 43 29.07 -10 08 24.9 o 069
2008-08-01 23:51:12 C 21 43 29.09 -10 08 26.8 o 069
2008-08-01 23:52:53 C 21 43 29.06 -10 08 32.6 o 069
2008-08-01 23:53:34 C 21 43 29.08 -10 08 35.3 o 069
2008-08-01 23:54:17 C 21 43 29.04 -10 08 37.7 o 069
2008-08-01 23:55:00 C 21 43 29.07 -10 08 39.5 o 069
2008-08-01 23:55:43 C 21 43 29.05 -10 08 43.0 o 069
2008-08-01 23:56:24 C 21 43 29.05 -10 08 44.7 o 069
2008-08-01 23:57:07 C 21 43 29.03 -10 08 46.5 o 069
2008-08-01 23:57:50 C 21 43 29.05 -10 08 49.4 o 069
2008-08-01 23:58:31 C 21 43 29.09 -10 08 51.5 o 069
2008-08-01 23:59:15 C 21 43 29.03 -10 08 53.6 o 069
2008-08-02 00:00:39 C 21 43 29.04 -10 08 58.7 o 069
2008-08-02 00:01:22 C 21 43 29.03 -10 09 00.9 o 069
2008-08-02 00:02:04 C 21 43 29.10 -10 09 02.8 o 069
2008-08-02 00:02:46 C 21 43 29.05 -10 09 06.0 o 069
2008-08-02 00:03:29 C 21 43 29.09 -10 09 07.7 o 069
2008-08-02 00:04:12 C 21 43 29.08 -10 09 10.5 o 069
2008-08-02 00:04:53 C 21 43 29.10 -10 09 12.3 o 069
2008-08-02 00:05:36 C 21 43 29.08 -10 09 15.0 o 069
2008-08-02 00:06:19 C 21 43 29.09 -10 09 16.7 o 069
2008-08-02 04:36:42 C 21 43 33.42 -10 24 16.8 r H53
2008-08-02 04:38:09 C 21 43 33.42 -10 24 21.5 r H53
2008-08-02 04:39:20 C 21 43 33.42 -10 24 25.9 r H53
2008-08-02 04:40:35 C 21 43 33.43 -10 24 30.1 r H53
2008-08-02 04:41:47 C 21 43 33.43 -10 24 34.2 r H53
2008-08-02 04:42:58 C 21 43 33.42 -10 24 38.1 r H53
2008-08-02 23:44:31 C 21 43 42.75 -11 33 21.9 c A53
2008-08-03 00:14:12 C 21 43 42.65 -11 35 15.7 c A53
2008-08-03 00:24:43 C 21 43 42.68 -11 35 55.7 c A53
2008-08-03 00:34:13 C 21 43 42.74 -11 36 33.0 v 204
2008-08-03 00:35:14 C 21 43 42.74 -11 36 36.7 v 204
2008-08-03 00:36:13 C 21 43 42.74 -11 36 40.6 v 204
2008-08-03 00:37:14 C 21 43 42.73 -11 36 44.5 v 204
2008-08-03 00:38:13 C 21 43 42.73 -11 36 48.2 v 204
2008-08-03 01:47:04 C 21 43 43.18 -11 41 10.2 r J53
2008-08-03 01:51:10 C 21 43 43.16 -11 41 26.0 r J53
2008-08-03 01:57:03 C 21 43 43.14 -11 41 48.8 r J53
2008-08-03 03:48:10 C 21 43 46.74 -11 48 57.7 r H53
2008-08-03 03:49:46 C 21 43 46.74 -11 49 04.1 r H53
2008-08-03 03:51:10 C 21 43 46.74 -11 49 09.6 r H53
2008-08-03 03:52:28 C 21 43 46.74 -11 49 14.7 r H53
2008-08-03 03:53:57 C 21 43 46.73 -11 49 20.5 r H53
2008-08-03 03:55:29 C 21 43 46.75 -11 49 26.6 r H53
2008-08-03 08:24:36 C 21 43 46.21 -12 07 15.3 r H45
2008-08-03 08:25:27 C 21 43 46.21 -12 07 19.0 r H45