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
2025-03-11 15:20:27 C 14 12 26.218 +36 31 32.70 V T08
2025-03-11 15:39:13 C 14 12 22.632 +36 31 51.42 V T08
2025-03-17 13:29:21 C 13 47 39.504 +38 22 11.41 X F51
2025-03-17 13:44:26 C 13 47 36.901 +38 22 19.56 X F51
2025-03-17 13:59:26 C 13 47 34.309 +38 22 27.65 X F51
2025-03-17 14:14:23 C 13 47 31.726 +38 22 35.52 X F51
2025-03-18 11:59:40 C 13 43 57.270 +38 33 52.25 X F51
2025-03-18 12:19:06 C 13 43 53.949 +38 34 01.74 X F51
2025-03-18 12:56:54 C 13 43 47.533 +38 34 19.81 X F51
2025-03-18 20:12:59 C 13 42 37.62 +38 37 34.1 q L04
2025-03-18 20:27:25 C 13 42 35.29 +38 37 40.7 q L04
2025-03-19 08:38:14 C 13 40 36.484 +38 43 13.91 V G96
2025-03-19 08:45:42 C 13 40 35.245 +38 43 17.15 V G96
2025-03-19 08:53:12 C 13 40 33.978 +38 43 20.32 V G96
2025-03-19 09:00:40 C 13 40 32.718 +38 43 23.81 V G96
2025-03-27 09:56:26 C 13 12 19.668 +39 19 32.23 V T08
2025-03-27 10:01:44 C 13 12 18.941 +39 19 33.02 V T08
2025-03-27 10:09:39 C 13 12 17.794 +39 19 33.10 V T08
2025-03-27 11:00:20 C 13 12 11.071 +39 19 31.66 V T08
2025-03-31 05:15:06 C 13 01 04.854 +39 09 37.58 V G96
2025-03-31 05:22:01 C 13 01 04.033 +39 09 36.58 V G96
2025-03-31 05:28:56 C 13 01 03.212 +39 09 35.39 V G96
2025-03-31 05:35:50 C 13 01 02.399 +39 09 34.24 V G96
2025-04-18 06:00:11 C 12 26 08.304 +36 06 35.68 V G96
2025-04-18 06:07:38 C 12 26 07.883 +36 06 31.39 V G96
2025-04-18 06:15:02 C 12 26 07.458 +36 06 26.24 V G96
2025-04-18 06:22:27 C 12 26 07.130 +36 06 22.79 V G96
2025-04-23 06:11:58 C 12 21 02.120 +34 54 12.89 V V00
2025-04-23 06:20:03 C 12 21 01.807 +34 54 07.88 V V00
2025-04-23 06:28:08 C 12 21 01.494 +34 54 02.81 V V00
2025-04-23 06:36:12 C 12 21 01.181 +34 53 57.70 V V00
2025-04-25 08:31:12 C 12 19 22.794 +34 22 36.72 X F51
2025-04-25 08:49:39 C 12 19 22.190 +34 22 25.13 X F51
2025-04-25 09:08:11 C 12 19 21.577 +34 22 13.14 X F51
2025-04-25 09:26:41 C 12 19 20.954 +34 22 01.42 X F51