405427 (2004 ST9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4373151600 ± 2.46e-08
Semi-major axis (a)2.2468091208 AU ± 6.13e-09
Inclination (i)12.22523566° ± 2.68e-06
Long. of Asc. Node (Ω)194.98549153° ± 1.23e-05
Arg. of Perihelion (ω)60.08246168° ± 1.80e-05
Mean Anomaly (M)175.81061891° ± 1.08e-05
Mean Motion (n)0.2926597578°/day ± 1.20e-09
Perihelion dist (q)1.26424543 AU ± 5.53e-08
Aphelion dist (Q)3.22937281 AU ± 5.59e-08
Orbital Period3.36782307 yr ± 1.38e-08
Physical Parameters
H (abs. magnitude)18.09
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.323″
Uncertainty0
Orbit TypeAmor
MOID0.315128 AU
Observations Used446
Oppositions14
Arc Total2004-2024
First Observation Used2004-09-17
Last Observation Used2024-12-04
Observations (475)
Date Type RA Dec Mag Band Observatory
2007-07-17 22:47:51 C 19 14 23.12 +20 09 21.4 c A24
2007-07-17 23:22:49 C 19 14 23.33 +20 08 53.9 c A24
2007-07-17 23:24:15 C 19 14 23.36 +20 08 52.8 c A24
2007-07-17 23:34:36 C 19 14 23.46 +20 08 44.6 c A24
2007-07-17 23:46:25 C 19 14 23.56 +20 08 35.4 c A24
2007-07-17 23:56:46 C 19 14 23.65 +20 08 27.2 c A24
2007-07-17 23:58:14 C 19 14 23.66 +20 08 26.0 c A24
2007-07-18 22:58:39 C 19 14 42.32 +19 50 18.8 c A24
2007-07-18 23:00:04 C 19 14 42.28 +19 50 16.7 c A24
2007-07-18 23:33:25 C 19 14 42.58 +19 49 49.7 c A24
2007-07-19 00:02:46 C 19 14 42.88 +19 49 26.0 c A24
2007-07-19 00:04:12 C 19 14 42.89 +19 49 25.0 c A24
2007-07-19 00:31:31 C 19 14 42.83 +19 49 02.5 i 071
2007-07-19 00:37:36 C 19 14 42.91 +19 48 58.4 i 071
2007-07-19 00:44:08 C 19 14 43.01 +19 48 52.5 i 071
2007-07-19 07:34:19 C 19 14 48.75 +19 43 24.4 r H45
2007-07-19 07:35:42 C 19 14 48.76 +19 43 23.5 r H45
2007-07-19 07:37:49 C 19 14 48.76 +19 43 21.1 r H45
2007-07-19 07:39:29 C 19 14 48.79 +19 43 20.1 r H45
2007-07-19 07:41:50 C 19 14 48.80 +19 43 18.2 r H45
2007-07-19 22:57:05 C 19 15 01.95 +19 30 46.9 c A24
2007-07-19 22:58:29 C 19 15 01.96 +19 30 45.7 c A24
2007-07-19 23:08:39 C 19 15 02.06 +19 30 37.4 c A24
2007-07-19 23:20:14 C 19 15 02.17 +19 30 28.1 c A24
2007-07-19 23:30:24 C 19 15 02.28 +19 30 19.8 c A24
2007-07-19 23:31:50 C 19 15 02.26 +19 30 19.0 c A24
2007-07-19 23:41:10 C 19 15 02.38 +19 30 10.8 c A24
2007-07-19 23:51:57 C 19 15 02.48 +19 30 01.6 c A24
2007-07-20 00:01:18 C 19 15 02.57 +19 29 53.3 c A24
2007-07-20 00:02:44 C 19 15 02.56 +19 29 52.4 c A24
2007-07-23 21:55:48 C 19 16 26.53 +18 08 00.2 i 071
2007-07-23 22:11:14 C 19 16 26.69 +18 07 46.2 i 071
2007-07-23 22:19:32 C 19 16 26.84 +18 07 38.4 i 071
2007-07-24 08:15:43 C 19 16 35.86 +17 58 30.7 r H45
2007-07-24 08:17:23 C 19 16 35.89 +17 58 29.2 r H45
2007-07-24 08:20:20 C 19 16 35.93 +17 58 26.3 r H45
2007-07-24 08:24:33 C 19 16 35.96 +17 58 22.2 r H45
2007-07-24 08:27:40 C 19 16 36.02 +17 58 19.4 r H45
2007-07-24 23:57:52 C 19 16 51.69 +17 43 54.0 c A24
2007-07-24 23:59:21 C 19 16 51.70 +17 43 52.6 c A24
2007-07-26 00:14:01 C 19 17 16.24 +17 20 58.7 c A24
2007-07-26 00:15:32 C 19 17 16.23 +17 20 56.7 c A24
2007-07-26 21:07:06 C 19 17 38.85 +17 00 54.9 r B38
2007-07-26 21:11:22 C 19 17 38.96 +17 00 50.7 c 560
2007-07-26 21:16:42 C 19 17 39.01 +17 00 45.8 c 560
2007-07-26 21:22:01 C 19 17 39.06 +17 00 40.8 c 560
2007-07-26 21:32:43 C 19 17 39.20 +17 00 30.6 r B38
2007-07-26 21:37:17 C 19 17 39.27 +17 00 26.0 r B38
2007-07-26 22:07:33 C 19 17 39.67 +16 59 55.4 r B38
2007-07-26 22:15:03 C 19 17 39.84 +16 59 48.6 o 198