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
2004-09-17 10:20:38 C 01 59 07.88 +11 31 48.5 c 691
2004-09-17 10:58:58 C 01 59 06.65 +11 31 34.3 c 691
2004-09-17 11:36:46 C 01 59 05.45 +11 31 19.4 c 691
2004-09-21 10:51:44 C 01 55 57.74 +10 53 18.9 d 291
2004-09-21 10:58:34 C 01 55 57.54 +10 53 15.7 d 291
2004-09-22 10:35:55 C 01 55 07.44 +10 43 29.0 d 291
2004-09-22 11:11:08 C 01 55 06.17 +10 43 13.7 d 291
2004-09-22 11:46:06 C 01 55 04.79 +10 43 00.1 d 291
2004-10-08 09:56:46 C 01 39 18.74 +07 51 11.2 d 291
2004-10-08 10:06:00 C 01 39 18.26 +07 51 07.1 d 291
2004-10-08 10:15:55 C 01 39 17.80 +07 51 02.5 d 291
2004-10-23 03:49:49 C 01 23 46.18 +05 12 33.6 d 291
2004-10-23 03:58:18 C 01 23 45.76 +05 12 30.4 d 291
2004-10-23 04:06:55 C 01 23 45.29 +05 12 27.3 d 291
2007-02-17 12:09:24 C 14 29 37.24 -18 39 57.3 r G96
2007-02-17 12:16:07 C 14 29 37.89 -18 39 58.4 r G96
2007-02-17 12:22:39 C 14 29 38.51 -18 39 58.9 r G96
2007-03-13 11:18:42 C 15 30 38.66 -17 47 29.0 r G96
2007-03-13 11:29:48 C 15 30 39.88 -17 47 25.4 r G96
2007-03-13 11:41:00 C 15 30 41.11 -17 47 21.7 r G96
2007-03-13 11:52:15 C 15 30 42.33 -17 47 18.0 r G96
2007-03-13 11:58:18 C 15 30 42.97 -17 47 15.9 o 291
2007-03-13 12:03:51 C 15 30 43.56 -17 47 14.1 o 291
2007-03-13 12:09:25 C 15 30 44.17 -17 47 12.3 o 291
2007-03-14 10:28:50 C 15 33 14.41 -17 39 42.8 20.0 c 704
2007-03-14 10:44:16 C 15 33 16.11 -17 39 36.0 19.5 c 704
2007-03-14 11:15:20 C 15 33 19.50 -17 39 25.8 19.3 c 704
2007-04-10 10:24:26 C 16 48 15.24 -09 57 34.6 c 711
2007-04-10 10:32:22 C 16 48 16.15 -09 57 26.6 c 711
2007-04-10 10:40:16 C 16 48 17.04 -09 57 17.5 c 711
2007-04-10 18:09:17 C 16 49 09.33 -09 48 39.6 r E12
2007-04-10 18:19:09 C 16 49 10.41 -09 48 28.5 r E12
2007-04-10 18:38:56 C 16 49 12.68 -09 48 06.9 r E12
2007-04-14 03:03:27 C 16 58 33.63 -08 14 37.5 r 113
2007-04-14 03:07:12 C 16 58 34.17 -08 14 31.8 r 113
2007-04-14 03:10:53 C 16 58 34.68 -08 14 25.1 r 113
2007-04-21 23:07:05 C 17 19 59.28 -04 07 01.5 i 071
2007-04-21 23:12:55 C 17 20 00.10 -04 06 51.4 i 071
2007-04-21 23:19:27 C 17 20 00.81 -04 06 42.8 i 071
2007-04-27 09:00:18 C 17 34 14.03 -00 57 33.7 r 448
2007-04-27 09:05:33 C 17 34 14.54 -00 57 25.8 r 448
2007-04-27 09:10:48 C 17 34 15.09 -00 57 18.0 r 448
2007-05-13 01:12:23 C 18 11 29.22 +08 43 05.2 17.7 r 130
2007-05-13 01:15:38 C 18 11 29.52 +08 43 09.8 17.6 r 130
2007-05-14 06:11:13 C 18 14 02.29 +09 26 48.7 18.5 o H55
2007-05-14 06:14:10 C 18 14 02.53 +09 26 51.2 18.2 o H55
2007-05-22 06:16:47 C 18 29 28.43 +13 59 37.7 r H51
2007-05-22 06:19:04 C 18 29 28.54 +13 59 39.8 r H51
2007-05-22 06:21:23 C 18 29 28.75 +13 59 43.6 r H51
2007-05-22 06:32:56 C 18 29 29.54 +14 00 00.1 r H51