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
2018-04-01 23:29:54 S 08 06 07.78 +03 51 12.5 L C51
2018-04-01 23:30:05 S 08 06 07.71 +03 51 11.7 L C51
2018-04-02 02:38:35 S 08 06 28.57 +03 51 32.7 L C51
2018-04-02 05:46:54 S 08 06 49.37 +03 51 49.4 L C51
2018-04-02 05:47:04 S 08 06 49.37 +03 51 49.3 L C51
2018-04-02 08:55:24 S 08 07 10.16 +03 52 07.8 L C51
2018-04-02 12:03:54 S 08 07 30.91 +03 52 26.3 L C51
2018-04-02 15:12:24 S 08 07 51.63 +03 52 45.2 L C51
2018-04-02 18:20:54 S 08 08 12.38 +03 53 02.1 L C51
2018-04-02 21:29:24 S 08 08 33.14 +03 53 19.9 L C51
2018-04-08 03:04:14 C 08 22 03.44 +04 02 28.4 U 703
2018-04-08 03:12:29 C 08 22 04.31 +04 02 29.1 U 703
2018-04-08 03:20:45 C 08 22 05.12 +04 02 29.4 U 703
2018-04-11 03:00:18 C 08 29 33.13 +04 05 33.4 U 703
2018-04-11 03:18:06 C 08 29 34.93 +04 05 32.7 U 703
2018-04-11 03:27:01 C 08 29 35.87 +04 05 33.6 U 703
2018-04-14 02:59:40 C 08 36 53.68 +04 07 03.7 U 703
2018-04-14 03:03:22 C 08 36 54.08 +04 07 04.0 U G96
2018-04-14 03:07:28 C 08 36 54.45 +04 07 03.9 U 703
2018-04-14 03:10:48 C 08 36 54.81 +04 07 04.2 U G96
2018-04-14 03:15:16 C 08 36 55.20 +04 07 03.7 U 703
2018-04-14 03:18:14 C 08 36 55.54 +04 07 04.1 U G96
2018-04-14 03:23:04 C 08 36 56.02 +04 07 04.2 U 703
2018-04-14 03:25:41 C 08 36 56.28 +04 07 04.2 U G96
2018-04-15 12:05:13 C 08 40 13.09 +04 07 15.2 q D29
2018-04-15 12:30:40 C 08 40 15.60 +04 07 15.0 q D29
2018-04-15 12:56:07 C 08 40 18.09 +04 07 15.1 q D29
2018-04-21 03:02:52 C 08 53 27.92 +04 04 46.0 U 703
2018-04-21 03:04:26 C 08 53 28.10 +04 04 45.6 U G96
2018-04-21 03:10:33 C 08 53 28.72 +04 04 44.7 U 703
2018-04-21 03:12:33 C 08 53 28.87 +04 04 45.4 U G96
2018-04-21 03:18:14 C 08 53 29.41 +04 04 45.4 U 703
2018-04-21 03:20:39 C 08 53 29.64 +04 04 45.1 U G96
2018-04-21 03:25:56 C 08 53 30.18 +04 04 44.7 U 703
2018-04-21 03:28:46 C 08 53 30.40 +04 04 44.9 U G96
2018-05-08 12:17:37 C 09 31 39.62 +03 27 31.5 q D29
2018-05-08 12:41:49 C 09 31 41.65 +03 27 28.6 q D29
2018-05-12 03:58:41 C 09 39 13.95 +03 14 47.6 U G96
2018-05-12 04:06:55 C 09 39 14.65 +03 14 45.3 U G96
2018-05-12 04:15:10 C 09 39 15.35 +03 14 44.0 U G96
2018-05-12 04:23:26 C 09 39 16.04 +03 14 42.9 U G96
2018-05-17 03:59:24 C 09 49 23.19 +02 54 54.6 U G96
2018-05-17 04:06:55 C 09 49 23.79 +02 54 53.5 U G96
2018-05-17 04:14:27 C 09 49 24.43 +02 54 51.8 U G96
2018-05-17 04:21:59 C 09 49 25.03 +02 54 50.6 U G96
2019-05-01 12:21:45 C 16 13 08.370 -21 14 41.23 U F51
2019-05-01 12:37:32 C 16 13 07.823 -21 14 39.05 U F51
2019-05-01 12:53:20 C 16 13 07.269 -21 14 36.72 U F51
2021-07-07 05:09:31 C 20 06 27.99 -09 26 05.2 u H21
2021-07-07 05:18:16 C 20 06 27.75 -09 26 05.7 u H21