333888 (1998 ST4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5911401060 ± 7.81e-09
Semi-major axis (a)2.8361713679 AU ± 4.49e-09
Inclination (i)9.14717990° ± 1.43e-06
Long. of Asc. Node (Ω)238.61081131° ± 5.90e-06
Arg. of Perihelion (ω)207.96148352° ± 6.56e-06
Mean Anomaly (M)235.43022484° ± 2.02e-06
Mean Motion (n)0.2063543240°/day ± 4.90e-10
Perihelion dist (q)1.15959672 AU ± 2.22e-08
Aphelion dist (Q)4.51274601 AU ± 2.33e-08
Orbital Period4.77637815 yr ± 1.13e-08
Physical Parameters
H (abs. magnitude)16.81
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.197″
Uncertainty0
Orbit TypeAmor
MOID0.187482 AU
Observations Used835
Oppositions20
Arc Total1998-2023
First Observation Used1998-08-18
Last Observation Used2023-05-24
Observations (1116)
Date Type RA Dec Mag Band Observatory
2017-09-17 01:57:53 C 00 33 21.78 +23 13 13.0 q J27
2017-09-17 02:05:09 C 00 33 21.62 +23 13 13.6 q J27
2017-09-17 02:13:24 C 00 33 21.45 +23 13 14.3 q J27
2017-09-17 11:00:55 C 00 33 12.40 +23 14 20.1 L T08
2017-09-17 11:01:39 C 00 33 12.38 +23 14 20.5 L T08
2017-09-17 11:16:54 C 00 33 12.06 +23 14 22.0 L T08
2017-09-17 11:18:56 C 00 33 11.98 +23 14 22.1 L T08
2017-09-17 11:34:32 C 00 33 11.67 +23 14 24.0 L T08
2017-09-17 11:36:40 C 00 33 11.62 +23 14 24.8 L T08
2017-09-17 11:46:54 C 00 33 11.42 +23 14 25.4 L T08
2017-09-17 11:48:57 C 00 33 11.36 +23 14 25.8 L T08
2017-09-21 12:23:12 C 00 31 12.855 +23 22 07.28 L F51
2017-09-21 12:41:37 C 00 31 12.368 +23 22 07.97 L F51
2017-09-21 13:00:04 C 00 31 11.884 +23 22 08.54 L F51
2017-09-21 23:22:12 C 00 30 57.95 +23 22 29.1 q 160
2017-09-21 23:24:22 C 00 30 57.91 +23 22 29.1 q 160
2017-09-21 23:26:19 C 00 30 57.86 +23 22 29.1 q 160
2017-09-21 23:40:47 C 00 30 57.46 +23 22 29.6 U 130
2017-09-21 23:41:54 C 00 30 57.45 +23 22 29.4 U 130
2017-09-21 23:44:08 C 00 30 57.39 +23 22 29.1 U 130
2017-09-21 23:45:48 C 00 30 57.33 +23 22 29.8 U 130
2017-09-22 07:48:35 C 00 30 45.89 +23 22 48.6 o 691
2017-09-22 07:59:51 C 00 30 45.57 +23 22 49.0 o 691
2017-09-22 08:12:42 C 00 30 45.22 +23 22 49.4 o 691
2017-09-24 08:11:18 C 00 29 32.99 +23 23 19.0 q 703
2017-09-24 08:19:44 C 00 29 32.73 +23 23 18.7 q 703
2017-09-24 08:28:08 C 00 29 32.49 +23 23 18.9 q 703
2017-09-24 08:36:24 C 00 29 32.25 +23 23 18.7 q 703
2017-09-25 11:01:03 C 00 28 49.79 +23 22 49.9 L T08
2017-09-25 11:13:03 C 00 28 49.42 +23 22 49.5 L T08
2017-09-25 11:13:43 C 00 28 49.37 +23 22 49.7 L T08
2017-09-25 11:23:23 C 00 28 49.08 +23 22 49.4 L T08
2017-09-27 11:11:12 C 00 27 27.33 +23 20 20.5 L T05
2017-09-27 11:26:09 C 00 27 26.83 +23 20 19.4 L T05
2017-09-27 11:26:49 C 00 27 26.82 +23 20 19.4 L T05
2017-09-27 11:45:58 C 00 27 26.17 +23 20 18.0 L T05
2017-09-27 22:39:15 C 00 27 07.18 +23 19 21.8 q 160
2017-09-27 22:41:13 C 00 27 07.10 +23 19 21.7 q 160
2017-09-27 22:43:09 C 00 27 07.02 +23 19 21.6 q 160
2017-09-28 08:13:36 C 00 26 49.53 +23 18 34.7 q 703
2017-09-28 08:22:18 C 00 26 49.23 +23 18 33.8 q 703
2017-09-28 08:30:54 C 00 26 48.93 +23 18 33.0 q 703
2017-09-28 08:39:28 C 00 26 48.65 +23 18 32.1 q 703
2017-09-28 14:15:46 C 00 26 39.04 +23 18 00.1 q D29
2017-09-28 14:36:08 C 00 26 38.36 +23 17 58.3 q D29
2017-09-28 14:56:30 C 00 26 37.66 +23 17 56.5 q D29
2017-09-29 10:40:44 C 00 26 00.63 +23 15 54.4 L T08
2017-09-29 10:54:10 C 00 26 00.16 +23 15 52.5 L T08
2017-09-29 11:02:58 C 00 25 59.85 +23 15 52.0 L T08
2017-09-29 11:21:51 C 00 25 59.15 +23 15 50.0 L T08