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
2017-09-30 08:01:47 C 00 25 20.609 +23 13 13.62 L F51
2017-09-30 08:17:44 C 00 25 20.041 +23 13 11.63 L F51
2017-09-30 08:33:33 C 00 25 19.469 +23 13 09.67 L F51
2017-09-30 08:49:29 C 00 25 18.897 +23 13 07.66 L F51
2017-10-01 06:10:35 C 00 24 37.13 +23 09 58.7 q 703
2017-10-01 06:17:42 C 00 24 36.86 +23 09 57.6 q 703
2017-10-01 06:24:46 C 00 24 36.56 +23 09 57.1 q 703
2017-10-01 06:31:50 C 00 24 36.34 +23 09 55.4 q 703
2017-10-01 10:35:04 C 00 24 28.08 +23 09 20.1 L T05
2017-10-01 10:51:16 C 00 24 27.49 +23 09 17.3 L T05
2017-10-01 10:51:55 C 00 24 27.46 +23 09 17.3 L T05
2017-10-01 11:13:38 C 00 24 26.64 +23 09 13.6 L T05
2017-10-01 20:48:33 C 00 24 08.04 +23 07 33.4 t 073
2017-10-01 21:30:34 C 00 24 06.54 +23 07 26.2 t 073
2017-10-01 22:24:22 C 00 24 04.56 +23 07 16.7 t 073
2017-10-02 18:48:16 C 00 23 24.00 +23 03 34.3 t 073
2017-10-02 20:29:05 C 00 23 20.31 +23 03 16.4 t 073
2017-10-02 22:12:22 C 00 23 16.67 +23 02 56.6 q 160
2017-10-02 22:14:27 C 00 23 16.59 +23 02 56.2 q 160
2017-10-02 22:14:57 C 00 23 16.37 +23 02 55.7 t 073
2017-10-02 22:16:32 C 00 23 16.49 +23 02 55.8 q 160
2017-10-03 10:53:35 C 00 22 50.22 +23 00 30.7 L T08
2017-10-03 11:02:02 C 00 22 49.88 +23 00 28.6 L T08
2017-10-03 11:09:23 C 00 22 49.59 +23 00 26.9 L T08
2017-10-03 11:12:09 C 00 22 49.49 +23 00 26.5 L T08
2017-10-07 15:35:01 C 00 19 15.83 +22 34 39.6 q D29
2017-10-07 16:11:04 C 00 19 14.35 +22 34 28.1 q D29
2017-10-07 16:47:44 C 00 19 12.86 +22 34 16.8 q D29
2017-10-08 00:11:50 C 00 18 56.84 +22 31 56.1 S J27
2017-10-08 00:15:46 C 00 18 56.68 +22 31 54.9 S J27
2017-10-08 00:21:39 C 00 18 56.45 +22 31 53.0 S J27
2017-10-08 23:07:07 C 00 18 06.44 +22 24 24.0 q 160
2017-10-08 23:09:13 C 00 18 06.36 +22 24 23.3 q 160
2017-10-08 23:11:18 C 00 18 06.27 +22 24 22.6 q 160
2017-10-09 21:19:17 C 00 17 17.69 +22 16 35.7 u K83
2017-10-09 21:20:37 C 00 17 17.63 +22 16 35.5 u K83
2017-10-09 21:23:00 C 00 17 17.58 +22 16 34.5 u K83
2017-10-09 21:28:31 C 00 17 17.30 +22 16 32.2 u K83
2017-10-09 22:58:39 C 00 17 13.69 +22 15 59.5 q 160
2017-10-09 23:00:34 C 00 17 13.61 +22 15 58.9 q 160
2017-10-09 23:02:32 C 00 17 13.54 +22 15 58.1 q 160
2017-10-10 06:40:59 C 00 16 56.77 +22 13 13.3 U 703
2017-10-10 06:48:06 C 00 16 56.38 +22 13 09.8 U 703
2017-10-10 06:55:12 C 00 16 56.09 +22 13 07.3 U 703
2017-10-10 07:02:20 C 00 16 55.71 +22 13 03.4 U 703
2017-10-10 17:17:23 C 00 16 33.74 +22 09 13.6 q C97
2017-10-10 17:19:36 C 00 16 33.62 +22 09 13.0 q C97
2017-10-10 22:58:59 C 00 16 20.41 +22 06 56.0 q 160
2017-10-10 23:01:07 C 00 16 20.33 +22 06 55.3 q 160
2017-10-10 23:03:15 C 00 16 20.22 +22 06 54.6 q 160