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
2018-01-15 00:12:27 S 03 08 26.477 -03 10 52.79 L C51
2018-01-16 04:05:38 C 03 14 02.73 -03 12 49.5 U 703
2018-01-16 04:13:14 C 03 14 04.23 -03 12 49.6 U 703
2018-01-16 04:20:49 C 03 14 05.72 -03 12 50.2 U 703
2018-01-16 04:28:25 C 03 14 07.19 -03 12 50.5 U 703
2018-01-16 08:21:53 C 03 14 53.91 -03 12 56.8 U T05
2018-01-16 08:36:01 C 03 14 56.68 -03 12 57.6 U T05
2018-01-16 08:50:14 C 03 14 59.47 -03 12 58.0 U T05
2018-01-16 09:04:31 C 03 15 02.29 -03 12 58.5 U T05
2018-01-17 03:56:11 C 03 18 51.56 -03 13 43.9 U G96
2018-01-17 04:04:20 C 03 18 53.15 -03 13 44.1 U G96
2018-01-17 04:12:27 C 03 18 54.75 -03 13 44.3 U G96
2018-01-17 04:20:35 C 03 18 56.34 -03 13 44.5 U G96
2018-01-17 21:38:34 C 03 22 25.96 -03 14 08.3 q 160
2018-01-17 21:40:43 C 03 22 26.39 -03 14 08.9 q 160
2018-01-17 21:42:50 C 03 22 26.81 -03 14 09.1 q 160
2018-01-18 07:46:36 C 03 24 29.16 -03 14 04.7 U T08
2018-01-18 08:00:15 C 03 24 31.82 -03 14 04.8 U T08
2018-01-18 08:00:55 C 03 24 31.96 -03 14 04.8 U T08
2018-01-18 08:14:28 C 03 24 34.63 -03 14 04.8 U T08
2018-01-18 08:15:08 C 03 24 34.76 -03 14 04.6 U T08
2018-01-18 08:28:47 C 03 24 37.45 -03 14 04.9 U T08
2018-01-18 08:29:27 C 03 24 37.57 -03 14 04.9 U T08
2018-01-18 08:43:12 C 03 24 40.29 -03 14 04.8 U T08
2018-01-19 04:25:11 C 03 28 40.32 -03 14 03.0 U 703
2018-01-19 04:32:50 C 03 28 41.84 -03 14 02.7 U 703
2018-01-19 04:40:28 C 03 28 43.32 -03 14 03.0 U 703
2018-01-19 04:48:06 C 03 28 44.86 -03 14 02.7 U 703
2018-01-21 20:18:28 C 03 41 38.00 -03 11 29.6 q 160
2018-01-21 20:20:22 C 03 41 38.37 -03 11 30.5 q 160
2018-01-21 20:22:10 C 03 41 38.67 -03 11 30.3 q 160
2018-01-24 02:25:28 C 03 52 36.40 -03 06 38.6 U 703
2018-01-24 02:33:03 C 03 52 37.88 -03 06 38.0 U 703
2018-01-24 02:40:38 C 03 52 39.38 -03 06 37.9 U 703
2018-01-24 02:48:14 C 03 52 40.88 -03 06 37.2 U 703
2018-01-30 08:21:56 C 04 22 36.98 -02 42 28.0 U T08
2018-01-30 08:34:10 C 04 22 39.26 -02 42 24.4 U T08
2018-01-30 08:45:41 C 04 22 41.58 -02 42 22.7 U T08
2018-01-30 08:57:59 C 04 22 43.95 -02 42 20.3 U T08
2018-01-30 19:45:21 C 04 24 52.49 -02 40 12.3 U K74
2018-01-30 19:47:48 C 04 24 52.96 -02 40 12.0 U K74
2018-01-30 19:50:15 C 04 24 53.44 -02 40 11.7 U K74
2018-01-30 19:52:41 C 04 24 53.91 -02 40 11.1 U K74
2018-02-02 23:56:53 C 04 39 45.27 -02 22 13.9 q I15
2018-02-03 00:00:06 C 04 39 45.89 -02 22 13.2 q I15
2018-02-03 00:03:20 C 04 39 46.52 -02 22 12.4 q I15
2018-02-03 08:24:07 C 04 41 22.27 -02 19 56.2 U T08
2018-02-03 08:37:01 C 04 41 24.67 -02 19 53.1 U T08
2018-02-03 08:49:59 C 04 41 27.12 -02 19 49.4 U T08
2018-02-03 09:03:00 C 04 41 29.62 -02 19 47.2 U T08