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
2024-07-09 13:35:37 C 00 00 57.065 +15 20 10.56 X F52
2024-09-07 16:12:52 C 23 49 33.10 +09 17 08.1 V D29
2024-09-07 16:53:35 C 23 49 31.23 +09 16 40.4 V D29
2024-09-09 06:12:28 C 23 47 54.694 +08 51 23.11 V G96
2024-09-09 06:20:05 C 23 47 54.362 +08 51 17.96 V G96
2024-09-09 06:27:38 C 23 47 54.006 +08 51 12.78 V G96
2024-09-09 06:35:10 C 23 47 53.682 +08 51 07.78 V G96
2024-09-09 17:10:05 C 23 47 25.90 +08 43 54.0 V D29
2024-09-09 17:30:26 C 23 47 24.97 +08 43 39.6 V D29
2024-09-09 17:50:48 C 23 47 24.03 +08 43 26.2 V D29
2024-09-22 14:56:22 C 23 34 31.81 +05 08 47.5 V D29
2024-09-22 15:16:44 C 23 34 30.99 +05 08 33.5 V D29
2024-09-22 15:37:06 C 23 34 30.17 +05 08 19.7 V D29
2024-09-24 05:37:56 C 23 33 04.417 +04 42 31.79 V G96
2024-09-24 05:45:20 C 23 33 04.144 +04 42 26.86 V G96
2024-09-24 05:52:44 C 23 33 03.848 +04 42 21.85 V G96
2024-09-24 06:00:07 C 23 33 03.564 +04 42 17.10 V G96
2024-10-06 04:35:52 C 23 24 10.156 +01 43 14.27 V G96
2024-10-06 04:43:22 C 23 24 09.976 +01 43 10.20 V G96
2024-10-06 04:50:51 C 23 24 09.781 +01 43 05.95 V G96
2024-10-06 04:58:21 C 23 24 09.590 +01 43 01.85 V G96
2024-12-04 02:40:34 C 23 37 51.974 -03 08 20.22 V V00
2024-12-04 02:48:40 C 23 37 52.266 -03 08 19.57 V V00
2024-12-04 02:56:44 C 23 37 52.547 -03 08 18.89 V V00
2024-12-04 03:04:48 C 23 37 52.838 -03 08 18.10 V V00