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
2017-03-25 05:11:49 C 11 45 51.13 -06 10 46.7 o W92
2017-03-25 05:34:41 C 11 45 50.33 -06 10 26.8 o W92
2017-03-26 05:00:16 C 11 45 04.60 -05 49 35.8 o W92
2017-03-26 05:12:32 C 11 45 04.20 -05 49 25.4 o W92
2017-03-26 05:28:26 C 11 45 03.70 -05 49 10.6 o W92
2017-03-26 07:08:05 C 11 45 00.67 -05 47 57.1 q 703
2017-03-26 07:08:45 C 11 45 00.66 -05 47 56.7 q G96
2017-03-26 07:14:51 C 11 45 00.43 -05 47 51.2 q G96
2017-03-26 07:16:07 C 11 45 00.36 -05 47 50.1 q 703
2017-03-26 07:20:56 C 11 45 00.22 -05 47 45.3 q G96
2017-03-26 07:24:08 C 11 45 00.13 -05 47 43.0 q 703
2017-03-26 07:27:02 C 11 44 59.99 -05 47 40.3 q G96
2017-03-26 07:32:08 C 11 44 59.79 -05 47 35.8 q 703
2017-03-27 23:41:39 C 11 43 41.58 -05 10 53.9 q 160
2017-03-27 23:44:04 C 11 43 41.48 -05 10 51.7 q 160
2017-03-27 23:46:30 C 11 43 41.38 -05 10 49.6 q 160
2017-03-28 07:35:14 C 11 43 26.07 -05 03 31.2 q H45
2017-03-28 07:36:24 C 11 43 26.02 -05 03 30.6 q H45
2017-03-28 07:37:41 C 11 43 25.98 -05 03 29.2 q H45
2017-03-28 07:39:05 C 11 43 25.94 -05 03 27.9 q H45
2017-03-28 07:40:25 C 11 43 25.88 -05 03 26.5 q H45
2017-03-28 07:41:44 C 11 43 25.84 -05 03 25.3 q H45
2017-03-29 07:12:58 C 11 42 40.92 -04 41 16.5 q 703
2017-03-29 07:20:40 C 11 42 40.63 -04 41 09.6 q 703
2017-03-29 07:28:20 C 11 42 40.33 -04 41 01.5 q 703
2017-03-29 08:19:07 C 11 42 39.246 -04 40 11.08 L F51
2017-03-29 08:37:08 C 11 42 38.603 -04 39 54.02 L F51
2017-03-29 08:55:07 C 11 42 37.957 -04 39 36.95 L F51
2017-03-30 10:45:46 C 11 41 48.42 -04 14 52.3 L T08
2017-03-30 11:07:01 C 11 41 47.59 -04 14 31.5 L T08
2017-03-30 11:28:15 C 11 41 46.90 -04 14 10.6 L T08
2017-03-30 11:49:31 C 11 41 46.16 -04 13 51.0 L T08
2017-03-30 22:20:58 C 11 41 26.90 -04 03 44.4 q 160
2017-03-30 22:23:57 C 11 41 26.80 -04 03 41.3 q 160
2017-03-30 22:26:56 C 11 41 26.68 -04 03 38.5 q 160
2017-04-04 05:45:19 C 11 38 21.97 -02 20 52.2 q G96
2017-04-04 05:54:16 C 11 38 21.67 -02 20 42.6 q G96
2017-04-04 06:00:25 C 11 38 21.49 -02 20 37.0 q G96
2017-04-04 06:06:32 C 11 38 21.29 -02 20 30.5 q G96
2017-04-04 07:17:32 C 11 38 18.78 -02 19 19.4 q H45
2017-04-04 07:19:21 C 11 38 18.71 -02 19 17.3 q H45
2017-04-04 07:20:37 C 11 38 18.67 -02 19 16.3 q H45
2017-04-04 07:21:54 C 11 38 18.63 -02 19 15.0 q H45
2017-04-04 07:23:22 C 11 38 18.58 -02 19 13.5 q H45
2017-04-04 07:24:37 C 11 38 18.55 -02 19 12.2 q H45
2017-04-15 08:25:20 C 11 32 36.52 +02 13 16.1 L T08
2017-04-15 08:45:04 C 11 32 36.15 +02 13 36.1 L T08
2017-04-15 09:08:10 C 11 32 35.74 +02 13 58.3 L T08
2017-04-15 09:29:24 C 11 32 35.42 +02 14 20.0 L T08
2017-04-15 14:05:31 C 11 32 32.04 +02 18 57.2 q D29