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
2017-04-15 14:33:31 C 11 32 31.56 +02 19 25.6 q D29
2017-04-15 15:01:30 C 11 32 31.03 +02 19 53.6 q D29
2017-04-16 05:46:32 C 11 32 20.10 +02 34 48.8 q G96
2017-04-16 05:52:42 C 11 32 20.01 +02 34 55.0 q G96
2017-04-16 06:02:33 C 11 32 19.85 +02 35 05.0 q G96
2017-04-16 06:08:43 C 11 32 19.76 +02 35 11.1 q G96
2017-04-18 22:23:00 C 11 31 42.71 +03 39 10.5 U 130
2017-04-18 22:27:23 C 11 31 42.68 +03 39 15.0 U 130
2017-04-22 04:40:41 C 11 31 24.20 +04 54 43.9 q H15
2017-04-22 04:54:40 C 11 31 24.22 +04 54 57.6 q H15
2017-04-22 05:08:37 C 11 31 24.13 +04 55 10.7 q H15
2017-04-22 06:29:31 C 11 31 24.559 +04 56 29.85 L F51
2017-04-22 06:48:05 C 11 31 24.472 +04 56 47.39 L F51
2017-04-22 07:05:10 C 11 31 24.390 +04 57 03.50 L F51
2017-04-23 05:53:32 C 11 31 24.52 +05 18 20.1 q 703
2017-04-23 05:53:43 C 11 31 24.52 +05 18 20.3 q G96
2017-04-23 05:59:53 C 11 31 24.50 +05 18 26.1 q G96
2017-04-23 06:01:16 C 11 31 24.48 +05 18 27.3 q 703
2017-04-23 06:06:07 C 11 31 24.49 +05 18 32.0 q G96
2017-04-23 06:08:59 C 11 31 24.47 +05 18 34.3 q 703
2017-04-23 06:12:17 C 11 31 24.47 +05 18 37.4 q G96
2017-04-23 06:16:41 C 11 31 24.45 +05 18 41.7 q 703
2017-04-23 21:35:30 C 11 31 26.55 +05 32 47.0 q 160
2017-04-23 21:38:30 C 11 31 26.54 +05 32 50.0 q 160
2017-04-23 21:41:04 C 11 31 26.52 +05 32 52.6 q 160
2017-04-28 13:09:34 C 11 32 18.77 +07 11 00.3 q D29
2017-04-28 13:32:29 C 11 32 18.98 +07 11 19.7 q D29
2017-04-28 13:55:23 C 11 32 19.18 +07 11 38.6 q D29
2017-04-30 04:46:54 C 11 32 53.64 +07 43 38.2 q G96
2017-04-30 04:52:59 C 11 32 53.73 +07 43 42.8 q G96
2017-04-30 04:59:06 C 11 32 53.79 +07 43 48.1 q G96
2017-04-30 05:05:11 C 11 32 53.87 +07 43 53.0 q G96
2017-05-01 05:07:54 C 11 33 19.41 +08 03 04.0 q 703
2017-05-01 05:15:37 C 11 33 19.47 +08 03 09.4 q 703
2017-05-01 05:28:39 C 11 33 19.77 +08 03 19.9 q 703
2017-05-01 05:36:21 C 11 33 19.83 +08 03 26.4 q 703
2017-05-09 07:36:38 C 11 38 45.291 +10 20 04.89 L F51
2017-05-09 07:53:16 C 11 38 45.831 +10 20 15.05 L F51
2017-05-09 08:09:54 C 11 38 46.373 +10 20 25.39 L F51
2017-05-09 08:26:35 C 11 38 46.923 +10 20 35.54 L F51
2017-05-17 06:29:15 C 11 47 25.11 +12 01 34.0 q 703
2017-05-17 06:35:34 C 11 47 25.48 +12 01 36.8 q 703
2017-05-17 06:41:54 C 11 47 25.83 +12 01 39.5 q 703
2017-05-17 06:48:12 C 11 47 26.12 +12 01 42.3 q 703
2017-05-18 04:08:43 C 11 48 36.64 +12 11 00.7 q G96
2017-05-18 04:14:40 C 11 48 36.95 +12 11 03.3 q G96
2017-05-18 04:20:39 C 11 48 37.27 +12 11 05.7 q G96
2017-05-18 04:26:35 C 11 48 37.58 +12 11 08.2 q G96
2017-05-19 08:40:34 C 11 50 13.44 +12 22 49.5 L T05
2017-05-19 09:00:54 C 11 50 14.60 +12 22 58.0 L T05