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
2017-10-10 23:19:07 C 00 16 19.79 +22 06 49.2 U J27
2017-10-10 23:25:14 C 00 16 19.53 +22 06 46.8 U J27
2017-10-10 23:38:24 C 00 16 18.99 +22 06 41.7 U J27
2017-10-11 22:37:02 C 00 15 27.97 +21 57 25.4 q 160
2017-10-11 22:39:01 C 00 15 27.87 +21 57 24.7 q 160
2017-10-11 22:41:00 C 00 15 27.80 +21 57 24.0 q 160
2017-10-12 00:12:58 C 00 15 24.28 +21 56 46.1 U J27
2017-10-12 00:18:50 C 00 15 24.05 +21 56 43.8 U J27
2017-10-12 00:28:50 C 00 15 23.62 +21 56 39.6 U J27
2017-10-13 06:33:54 C 00 14 17.21 +21 43 41.1 U 703
2017-10-13 06:40:58 C 00 14 16.92 +21 43 38.0 U 703
2017-10-13 06:48:01 C 00 14 16.63 +21 43 34.8 U 703
2017-10-13 06:55:04 C 00 14 16.32 +21 43 31.6 U 703
2017-10-13 07:49:05 C 00 14 14.12 +21 43 07.0 U G96
2017-10-13 07:55:56 C 00 14 13.84 +21 43 03.9 U G96
2017-10-13 08:02:45 C 00 14 13.56 +21 43 00.7 U G96
2017-10-13 08:27:02 C 00 14 12.57 +21 42 49.5 U G96
2017-10-14 03:34:50 C 00 13 31.70 +21 34 00.6 U G96
2017-10-14 03:47:21 C 00 13 31.19 +21 33 54.9 U G96
2017-10-14 04:00:24 C 00 13 30.67 +21 33 48.9 U G96
2017-10-14 04:13:06 C 00 13 30.15 +21 33 43.2 U G96
2017-10-15 23:02:48 C 00 11 56.55 +21 12 33.0 U J27
2017-10-15 23:13:07 C 00 11 56.14 +21 12 27.6 U J27
2017-10-15 23:18:11 C 00 11 55.94 +21 12 25.0 U J27
2017-10-16 05:31:59 C 00 11 42.85 +21 09 14.6 U 703
2017-10-16 05:47:26 C 00 11 42.21 +21 09 05.2 U 703
2017-10-16 05:55:13 C 00 11 41.77 +21 08 59.9 U 703
2017-10-16 16:47:55 C 00 11 19.24 +21 03 18.3 q C97
2017-10-16 16:50:55 C 00 11 19.11 +21 03 16.9 q C97
2017-10-16 16:58:14 C 00 11 18.90 +21 03 12.9 q C97
2017-10-16 17:00:43 C 00 11 18.73 +21 03 11.8 q C97
2017-10-16 17:03:33 C 00 11 18.61 +21 03 10.1 q C97
2017-10-16 17:06:47 C 00 11 18.48 +21 03 08.4 q C97
2017-10-17 21:47:34 C 00 10 17.83 +20 47 17.4 U 130
2017-10-17 21:49:48 C 00 10 17.75 +20 47 16.2 U 130
2017-10-17 21:52:47 C 00 10 17.63 +20 47 14.6 U 130
2017-10-17 21:54:59 C 00 10 17.54 +20 47 13.3 U 130
2017-10-18 10:07:48 C 00 09 52.008 +20 40 22.99 L F51
2017-10-18 10:25:29 C 00 09 51.314 +20 40 12.63 L F51
2017-10-18 11:00:42 C 00 09 49.956 +20 39 51.83 L F51
2017-10-20 21:36:55 C 00 07 54.63 +20 04 16.8 q 160
2017-10-20 21:38:59 C 00 07 54.55 +20 04 15.6 q 160
2017-10-20 21:41:04 C 00 07 54.46 +20 04 14.1 q 160
2017-10-21 05:18:39 C 00 07 40.18 +19 59 26.1 U G96
2017-10-21 05:26:09 C 00 07 39.91 +19 59 21.3 U G96
2017-10-21 05:33:41 C 00 07 39.64 +19 59 16.4 U G96
2017-10-21 05:41:15 C 00 07 39.36 +19 59 11.6 U G96
2017-10-22 05:17:32 C 00 06 55.92 +19 43 48.3 U G96
2017-10-22 05:28:55 C 00 06 55.52 +19 43 40.7 U G96
2017-10-22 05:40:12 C 00 06 55.12 +19 43 33.2 U G96