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
2007-07-07 23:09:12 C 19 11 24.00 +22 38 50.1 r 157
2007-07-07 23:12:06 C 19 11 24.02 +22 38 48.8 r 157
2007-07-07 23:15:00 C 19 11 24.05 +22 38 47.8 r 157
2007-07-07 23:17:55 C 19 11 24.08 +22 38 46.4 r 157
2007-07-07 23:37:43 C 19 11 24.28 +22 38 36.2 c A24
2007-07-08 07:36:53 C 19 11 30.02 +22 34 56.6 r H45
2007-07-08 07:38:19 C 19 11 30.02 +22 34 56.3 r H45
2007-07-08 07:39:46 C 19 11 30.03 +22 34 55.6 r H45
2007-07-08 07:43:49 C 19 11 30.07 +22 34 53.8 r H45
2007-07-08 07:47:09 C 19 11 30.10 +22 34 51.8 r H45
2007-07-12 07:28:54 C 19 12 41.75 +21 43 14.3 c 670
2007-07-12 07:35:24 C 19 12 41.74 +21 43 10.4 c 670
2007-07-12 23:34:13 C 19 12 53.24 +21 33 14.0 c A24
2007-07-13 00:07:08 C 19 12 53.50 +21 32 52.3 c A24
2007-07-13 00:08:35 C 19 12 53.50 +21 32 51.6 c A24
2007-07-13 22:13:27 C 19 13 10.27 +21 18 39.5 c A24
2007-07-13 22:30:03 C 19 13 10.40 +21 18 28.4 c A24
2007-07-13 22:48:56 C 19 13 10.55 +21 18 16.0 c A24
2007-07-13 22:50:24 C 19 13 10.53 +21 18 15.2 c A24
2007-07-13 23:09:53 C 19 13 10.60 +21 18 02.0 c A24
2007-07-13 23:23:36 C 19 13 10.71 +21 17 53.3 c A24
2007-07-13 23:25:03 C 19 13 10.66 +21 17 51.7 c A24
2007-07-13 23:35:19 C 19 13 10.81 +21 17 45.5 c A24
2007-07-13 23:47:05 C 19 13 10.92 +21 17 37.8 c A24
2007-07-13 23:57:21 C 19 13 10.98 +21 17 30.9 c A24
2007-07-13 23:58:51 C 19 13 11.00 +21 17 30.3 c A24
2007-07-14 00:14:25 C 19 13 11.14 +21 17 19.8 c A24
2007-07-14 00:31:14 C 19 13 11.25 +21 17 08.7 c A24
2007-07-14 23:02:24 C 19 13 28.37 +21 01 56.3 c A24
2007-07-14 23:03:51 C 19 13 28.39 +21 01 55.4 c A24
2007-07-14 23:37:46 C 19 13 28.57 +21 01 32.3 c A24
2007-07-14 23:39:14 C 19 13 28.58 +21 01 31.0 c A24
2007-07-14 23:48:52 C 19 13 28.65 +21 01 24.4 c A24
2007-07-15 00:00:00 C 19 13 28.76 +21 01 16.7 c A24
2007-07-15 00:09:39 C 19 13 28.83 +21 01 10.1 c A24
2007-07-15 00:11:07 C 19 13 28.85 +21 01 09.2 c A24
2007-07-15 07:45:46 C 19 13 34.22 +20 55 55.3 r H45
2007-07-15 07:47:00 C 19 13 34.23 +20 55 54.8 r H45
2007-07-15 07:49:20 C 19 13 34.24 +20 55 52.9 r H45
2007-07-15 07:52:13 C 19 13 34.27 +20 55 50.9 r H45
2007-07-15 07:53:56 C 19 13 34.28 +20 55 49.8 r H45
2007-07-16 07:09:27 C 19 13 52.32 +20 39 15.1 19.0 c 704
2007-07-16 07:23:55 C 19 13 52.32 +20 39 03.0 19.0 c 704
2007-07-16 07:52:47 C 19 13 52.42 +20 38 43.3 19.1 c 704
2007-07-17 07:27:25 C 19 14 10.53 +20 21 09.3 r H45
2007-07-17 07:30:06 C 19 14 10.55 +20 21 06.6 r H45
2007-07-17 07:32:26 C 19 14 10.55 +20 21 05.0 r H45
2007-07-17 07:54:42 C 19 14 10.76 +20 20 48.0 r H45
2007-07-17 07:56:16 C 19 14 10.77 +20 20 46.6 r H45
2007-07-17 22:46:25 C 19 14 23.11 +20 09 22.9 c A24