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
2017-11-17 08:32:46 C 00 05 32.78 +10 50 34.1 U T05
2017-11-18 11:43:05 C 00 06 33.07 +10 25 11.5 q D29
2017-11-18 12:03:27 C 00 06 33.75 +10 24 52.7 q D29
2017-11-18 12:23:49 C 00 06 34.38 +10 24 33.9 q D29
2017-11-18 18:32:54 C 00 06 49.04 +10 18 46.5 U 108
2017-11-18 18:35:10 C 00 06 49.08 +10 18 44.6 U 108
2017-11-18 18:38:36 C 00 06 49.22 +10 18 40.8 U 108
2017-11-18 19:34:12 C 00 06 51.15 +10 17 49.5 q 160
2017-11-18 19:37:02 C 00 06 51.29 +10 17 46.1 q 160
2017-11-18 19:39:50 C 00 06 51.40 +10 17 43.6 q 160
2017-11-19 04:33:05 C 00 07 12.42 +10 09 33.4 U 703
2017-11-19 04:40:41 C 00 07 12.70 +10 09 26.3 U 703
2017-11-19 04:48:16 C 00 07 12.96 +10 09 19.3 U 703
2017-11-19 04:55:51 C 00 07 13.23 +10 09 12.2 U 703
2017-11-19 07:44:47 C 00 07 20.16 +10 06 40.6 U T08
2017-11-19 07:56:37 C 00 07 20.56 +10 06 29.7 U T08
2017-11-19 08:08:28 C 00 07 20.99 +10 06 18.4 U T08
2017-11-19 08:20:08 C 00 07 21.42 +10 06 07.6 U T08
2017-11-19 19:25:15 C 00 07 50.02 +09 55 42.6 q 160
2017-11-19 19:28:06 C 00 07 50.17 +09 55 40.0 q 160
2017-11-19 19:31:00 C 00 07 50.26 +09 55 37.4 q 160
2017-11-19 20:42:24 C 00 07 53.25 +09 54 32.5 U J27
2017-11-19 20:48:52 C 00 07 53.49 +09 54 26.4 U J27
2017-11-19 20:54:17 C 00 07 53.71 +09 54 21.4 U J27
2017-11-20 23:18:22 C 00 09 04.06 +09 29 59.6 d Z35
2017-11-20 23:48:23 C 00 09 05.34 +09 29 30.7 d Z35
2017-11-21 00:09:51 C 00 09 06.26 +09 29 10.6 d Z35
2017-11-21 07:48:57 C 00 09 28.68 +09 22 17.1 U T05
2017-11-21 08:00:31 C 00 09 29.16 +09 22 06.3 U T05
2017-11-21 08:12:10 C 00 09 29.64 +09 21 55.5 U T05
2017-11-21 08:23:37 C 00 09 30.13 +09 21 45.0 U T05
2017-11-22 21:11:37 C 00 11 22.54 +08 47 59.0 d Z35
2017-11-22 21:30:56 C 00 11 23.52 +08 47 40.7 d Z35
2017-11-22 21:50:56 C 00 11 24.47 +08 47 21.6 d Z35
2017-11-23 04:36:25 C 00 11 46.42 +08 41 17.0 U 703
2017-11-23 04:45:46 C 00 11 46.90 +08 41 07.7 U 703
2017-11-23 04:55:11 C 00 11 47.40 +08 40 59.2 U 703
2017-11-23 05:04:25 C 00 11 47.86 +08 40 50.7 U 703
2017-11-23 07:29:14 C 00 11 55.92 +08 38 44.4 U T08
2017-11-23 07:41:00 C 00 11 56.49 +08 38 33.9 U T08
2017-11-23 07:52:47 C 00 11 57.06 +08 38 23.0 U T08
2017-11-23 08:04:23 C 00 11 57.63 +08 38 12.3 U T08
2017-11-25 07:22:07 C 00 14 43.69 +07 55 35.1 U T05
2017-11-25 07:33:46 C 00 14 44.34 +07 55 24.6 U T05
2017-11-25 07:45:16 C 00 14 44.99 +07 55 14.1 U T05
2017-11-25 11:33:05 C 00 14 59.86 +07 51 46.2 q D29
2017-11-25 11:53:26 C 00 15 01.01 +07 51 28.0 q D29
2017-11-25 12:13:48 C 00 15 02.16 +07 51 09.7 q D29
2017-11-27 19:26:48 C 00 18 42.89 +07 02 18.6 q 160
2017-11-27 19:29:35 C 00 18 43.08 +07 02 15.9 q 160