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
2007-07-26 22:24:03 C 19 17 39.96 +16 59 39.8 o 198
2007-07-26 22:29:59 C 19 17 40.04 +16 59 34.1 o 198
2007-07-26 22:52:57 C 19 17 40.33 +16 59 12.6 c A24
2007-07-26 22:54:22 C 19 17 40.39 +16 59 11.2 c A24
2007-07-26 23:04:43 C 19 17 40.52 +16 59 01.3 c A24
2007-07-26 23:16:29 C 19 17 40.68 +16 58 49.7 c A24
2007-07-26 23:26:51 C 19 17 40.83 +16 58 39.7 c A24
2007-07-26 23:28:16 C 19 17 40.83 +16 58 38.2 c A24
2007-07-26 23:39:32 C 19 17 41.01 +16 58 27.3 c A24
2007-07-26 23:52:14 C 19 17 41.19 +16 58 15.0 c A24
2007-07-27 00:03:31 C 19 17 41.37 +16 58 04.2 c A24
2007-07-27 00:04:57 C 19 17 41.39 +16 58 02.8 c A24
2007-07-27 21:22:19 C 19 18 05.18 +16 37 14.9 r B38
2007-07-27 21:39:24 C 19 18 05.39 +16 36 58.4 r B38
2007-07-27 21:47:45 C 19 18 05.53 +16 36 50.1 r B38
2007-07-27 22:02:47 C 19 18 05.76 +16 36 35.3 r B38
2007-07-27 22:45:51 C 19 18 06.41 +16 35 53.2 c A24
2007-07-27 22:47:16 C 19 18 06.43 +16 35 51.4 c A24
2007-07-27 23:19:20 C 19 18 06.92 +16 35 20.7 c A24
2007-07-27 23:20:44 C 19 18 06.90 +16 35 18.7 c A24
2007-07-27 23:52:53 C 19 18 07.42 +16 34 46.9 c A24
2007-07-28 23:59:35 C 19 18 34.74 +16 10 51.0 c A24
2007-07-29 00:01:01 C 19 18 34.73 +16 10 49.7 c A24
2007-08-04 20:50:58 C 19 22 11.53 +13 19 49.9 c 560
2007-08-04 20:58:39 C 19 22 11.72 +13 19 41.7 c 560
2007-08-04 21:06:21 C 19 22 11.91 +13 19 33.5 c 560
2007-08-06 21:40:28 C 19 23 26.00 +12 27 30.0 c A24
2007-08-06 21:41:55 C 19 23 26.03 +12 27 28.7 c A24
2007-08-06 22:38:04 C 19 23 27.29 +12 26 27.8 c A24
2007-08-06 22:39:31 C 19 23 27.28 +12 26 26.2 c A24
2007-08-06 22:55:09 C 19 23 27.65 +12 26 09.5 c A24
2007-08-06 23:18:44 C 19 23 28.20 +12 25 44.2 c A24
2007-08-08 07:05:13 C 19 24 19.28 +11 51 28.7 r H45
2007-08-08 07:12:00 C 19 24 19.47 +11 51 21.4 r H45
2007-08-08 07:13:27 C 19 24 19.50 +11 51 20.0 r H45
2007-08-08 07:15:49 C 19 24 19.58 +11 51 17.4 r H45
2007-08-08 07:17:43 C 19 24 19.59 +11 51 15.0 r H45
2007-08-10 06:02:56 C 19 25 39.56 +11 00 39.6 r H45
2007-08-10 06:14:33 C 19 25 39.86 +11 00 27.3 r H45
2007-08-10 06:16:13 C 19 25 39.90 +11 00 25.5 r H45
2007-08-10 06:18:00 C 19 25 39.95 +11 00 23.7 r H45
2007-08-10 06:19:54 C 19 25 39.99 +11 00 21.4 r H45
2007-08-11 21:37:41 C 19 26 51.38 +10 17 45.3 c A24
2007-08-12 22:35:05 C 19 27 38.01 +09 50 47.5 c A24
2007-08-12 22:36:31 C 19 27 38.03 +09 50 46.9 c A24
2007-08-14 20:31:20 C 19 29 08.41 +09 01 20.2 o 198
2007-08-14 20:39:27 C 19 29 08.67 +09 01 11.3 o 198
2007-08-14 20:43:29 C 19 29 08.83 +09 01 07.1 o 198
2007-08-16 22:14:05 C 19 30 51.29 +08 08 18.0 c B09
2007-08-16 22:29:28 C 19 30 51.58 +08 08 01.1 c B09