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
2017-05-19 09:21:24 C 11 50 15.69 +12 23 05.5 L T05
2017-05-19 09:41:54 C 11 50 16.86 +12 23 13.6 L T05
2017-05-20 21:43:26 C 11 52 25.89 +12 36 55.4 q K89
2017-05-20 22:40:38 C 11 52 29.24 +12 37 15.5 q K89
2017-05-21 05:10:21 C 11 52 53.32 +12 39 40.0 q 703
2017-05-21 05:18:04 C 11 52 53.80 +12 39 42.9 q 703
2017-05-21 05:25:45 C 11 52 54.22 +12 39 45.7 q 703
2017-05-21 05:33:26 C 11 52 54.66 +12 39 48.2 q 703
2017-05-27 03:40:12 S 12 02 30.139 +13 21 54.72 L C51
2017-05-27 13:05:53 S 12 03 11.65 +13 24 03.9 L C51
2017-05-27 16:14:34 S 12 03 25.59 +13 24 44.2 L C51
2017-05-27 19:23:04 S 12 03 39.56 +13 25 26.5 L C51
2017-05-27 20:57:19 S 12 03 46.52 +13 25 46.7 L C51
2017-05-28 00:06:00 S 12 04 00.63 +13 26 28.4 L C51
2017-05-28 01:40:16 S 12 04 07.62 +13 26 47.6 L C51
2017-05-28 09:31:41 S 12 04 43.03 +13 28 27.1 L C51
2017-05-28 12:40:11 S 12 04 57.166 +13 29 06.11 L C51
2017-05-28 15:48:41 S 12 05 11.407 +13 29 44.59 L C51
2017-06-13 05:49:02 C 12 38 15.37 +13 47 21.7 q 703
2017-06-13 05:56:48 C 12 38 15.98 +13 47 21.1 q 703
2017-06-13 06:12:12 C 12 38 17.46 +13 47 18.8 q 703
2017-06-28 04:30:30 C 13 17 20.33 +12 25 32.9 q 703
2017-06-28 04:39:04 C 13 17 21.32 +12 25 29.7 q 703
2017-06-28 04:47:32 C 13 17 22.35 +12 25 27.3 q 703
2017-06-28 04:55:56 C 13 17 23.28 +12 25 24.5 q 703
2017-07-14 06:39:07 C 14 05 15.863 +09 27 11.80 L F51
2017-07-14 06:56:10 C 14 05 18.029 +09 27 02.20 L F51
2017-07-14 07:30:15 C 14 05 22.361 +09 26 42.84 L F51
2017-07-20 12:59:40 C 14 25 05.27 +07 57 34.4 q D29
2017-07-20 13:20:02 C 14 25 07.96 +07 57 21.8 q D29
2020-01-23 11:11:19 C 07 58 25.034 +01 35 16.34 U F52
2020-01-23 11:31:50 C 07 58 24.005 +01 35 19.49 U F52
2020-01-23 11:52:12 C 07 58 22.986 +01 35 22.86 U F52
2020-01-23 12:12:31 C 07 58 21.991 +01 35 26.20 U F52
2020-01-27 06:12:51 C 07 53 59.04 +01 51 42.3 V G96
2020-01-27 06:20:16 C 07 53 58.68 +01 51 44.0 V G96
2020-01-27 06:35:07 C 07 53 57.95 +01 51 46.4 V G96
2021-10-30 09:22:31 C 02 27 39.254 +07 01 23.12 U F51
2021-10-30 09:52:27 C 02 27 37.908 +07 01 12.87 U F51
2021-10-30 10:28:58 C 02 27 36.247 +07 01 00.53 U F51
2024-05-15 10:55:05 C 22 24 50.785 +05 01 32.59 V G96
2024-05-15 11:02:02 C 22 24 51.527 +05 01 38.39 V G96
2024-05-15 11:09:01 C 22 24 52.160 +05 01 41.99 V G96
2024-05-15 11:15:58 C 22 24 52.870 +05 01 47.14 V G96
2024-07-03 13:13:26 C 23 54 43.195 +14 47 09.07 X F52
2024-07-03 13:31:25 C 23 54 44.009 +14 47 13.94 X F52
2024-07-03 13:49:23 C 23 54 44.820 +14 47 18.75 X F52
2024-07-03 14:07:24 C 23 54 45.644 +14 47 23.51 X F52
2024-07-09 13:03:15 C 00 00 55.879 +15 20 04.27 X F52
2024-07-09 13:19:26 C 00 00 56.468 +15 20 07.33 X F52