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
2018-02-05 05:23:07 C 04 49 59.10 -02 07 55.6 U G96
2018-02-05 05:30:33 C 04 50 00.50 -02 07 53.4 U G96
2018-02-05 05:45:27 C 04 50 03.25 -02 07 49.5 U G96
2018-02-06 05:49:19 C 04 54 36.68 -02 01 00.1 U 703
2018-02-06 05:57:10 C 04 54 38.13 -02 00 57.9 U 703
2018-02-06 06:05:04 C 04 54 39.58 -02 00 55.6 U 703
2018-02-06 06:12:55 C 04 54 41.02 -02 00 53.2 U 703
2018-02-06 06:20:09 C 04 54 42.35 -02 00 51.0 U 703
2018-02-06 06:27:51 C 04 54 43.79 -02 00 48.8 U 703
2018-02-06 06:35:34 C 04 54 45.19 -02 00 46.9 U 703
2018-02-06 06:43:15 C 04 54 46.63 -02 00 44.2 U 703
2018-02-08 19:02:28 C 05 06 03.16 -01 42 46.3 U K74
2018-02-08 19:04:08 C 05 06 03.46 -01 42 45.7 U K74
2018-02-08 19:13:47 C 05 06 05.21 -01 42 42.7 U K74
2018-02-08 19:15:32 C 05 06 05.54 -01 42 42.8 U K74
2018-02-08 19:17:16 C 05 06 05.84 -01 42 41.8 U K74
2018-02-09 04:43:06 C 05 07 49.75 -01 39 41.5 U 703
2018-02-09 04:50:38 C 05 07 51.13 -01 39 39.0 U 703
2018-02-09 04:58:09 C 05 07 52.45 -01 39 36.9 U 703
2018-02-09 05:05:41 C 05 07 53.80 -01 39 34.6 U 703
2018-02-10 20:00:57 C 05 15 00.81 -01 27 16.4 q 160
2018-02-10 20:02:59 C 05 15 01.18 -01 27 15.2 q 160
2018-02-10 20:04:59 C 05 15 01.58 -01 27 14.6 q 160
2018-02-11 08:18:47 C 05 17 13.91 -01 23 09.7 U T08
2018-02-11 08:33:06 C 05 17 16.44 -01 23 05.2 U T08
2018-02-11 09:02:00 C 05 17 21.55 -01 22 55.8 U T08
2018-02-13 18:26:55 C 05 27 37.49 -01 04 02.0 U K74
2018-02-13 18:28:14 C 05 27 37.72 -01 04 01.4 U K74
2018-02-13 18:45:12 C 05 27 40.65 -01 03 55.9 U K74
2018-02-13 18:46:47 C 05 27 40.94 -01 03 55.2 U K74
2018-02-15 18:21:19 C 05 36 00.04 -00 47 42.7 U K83
2018-02-15 18:26:58 C 05 36 01.01 -00 47 41.5 U K83
2018-02-15 18:29:37 C 05 36 01.43 -00 47 39.6 U K83
2018-02-23 02:24:50 C 06 05 22.33 +00 13 17.1 U G96
2018-02-23 02:34:59 C 06 05 23.92 +00 13 20.6 U G96
2018-02-23 02:45:05 C 06 05 25.50 +00 13 24.2 U G96
2018-02-23 02:55:21 C 06 05 27.11 +00 13 27.7 U G96
2018-03-07 08:31:34 C 06 49 35.70 +01 48 08.1 U T08
2018-03-07 09:00:14 C 06 49 39.63 +01 48 16.1 U T08
2018-03-07 09:14:42 C 06 49 41.64 +01 48 20.5 U T08
2018-03-19 03:23:01 C 07 27 05.42 +02 59 37.1 U G96
2018-03-19 03:31:47 C 07 27 06.47 +02 59 38.6 U G96
2018-03-19 03:40:33 C 07 27 07.53 +02 59 40.3 U G96
2018-03-21 19:10:40 C 07 34 58.13 +03 12 18.5 S A16
2018-03-21 19:32:37 C 07 35 00.74 +03 12 22.5 S A16
2018-03-21 19:54:34 C 07 35 03.35 +03 12 26.6 S A16
2018-03-21 20:05:33 C 07 35 04.71 +03 12 28.2 S A16
2018-03-21 21:05:08 C 07 35 11.84 +03 12 39.8 S A16
2018-03-21 21:49:03 C 07 35 17.11 +03 12 48.1 S A16
2018-03-23 05:27:28 S 07 39 07.41 +03 18 43.5 L C51