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
2017-11-27 19:32:24 C 00 18 43.27 +07 02 13.7 q 160
2017-12-02 01:12:09 C 00 26 40.01 +05 35 23.2 u H21
2017-12-02 01:14:40 C 00 26 40.21 +05 35 21.1 u H21
2017-12-02 01:17:11 C 00 26 40.41 +05 35 18.9 u H21
2017-12-02 01:19:42 C 00 26 40.62 +05 35 16.9 u H21
2017-12-02 01:22:13 C 00 26 40.82 +05 35 14.8 u H21
2017-12-02 01:24:45 C 00 26 41.01 +05 35 12.7 u H21
2017-12-02 01:27:16 C 00 26 41.21 +05 35 10.6 u H21
2017-12-02 01:29:47 C 00 26 41.41 +05 35 08.5 u H21
2017-12-02 01:32:18 C 00 26 41.62 +05 35 06.4 u H21
2017-12-02 01:34:49 C 00 26 41.82 +05 35 04.2 u H21
2017-12-02 01:37:20 C 00 26 42.01 +05 35 02.2 u H21
2017-12-02 01:39:51 C 00 26 42.22 +05 35 00.2 u H21
2017-12-02 01:41:52 C 00 26 42.38 +05 34 58.4 u H21
2017-12-03 21:10:15 C 00 30 33.24 +04 59 07.4 q 160
2017-12-03 21:13:09 C 00 30 33.50 +04 59 05.1 q 160
2017-12-03 21:16:05 C 00 30 33.75 +04 59 02.5 q 160
2017-12-05 07:29:21 C 00 33 47.62 +04 31 36.4 U T08
2017-12-05 07:40:42 C 00 33 48.64 +04 31 27.1 U T08
2017-12-05 07:52:30 C 00 33 49.69 +04 31 17.7 U T08
2017-12-05 08:04:32 C 00 33 50.78 +04 31 08.5 U T08
2017-12-05 20:26:53 C 00 35 03.76 +04 21 08.3 q 160
2017-12-05 20:29:48 C 00 35 04.00 +04 21 06.0 q 160
2017-12-05 20:32:42 C 00 35 04.29 +04 21 03.8 q 160
2017-12-06 02:45:06 C 00 35 41.29 +04 16 11.2 u H21
2017-12-06 02:47:09 C 00 35 41.50 +04 16 09.3 u H21
2017-12-06 02:49:14 C 00 35 41.69 +04 16 07.6 u H21
2017-12-06 02:51:17 C 00 35 41.88 +04 16 06.0 u H21
2017-12-06 02:53:22 C 00 35 42.09 +04 16 04.3 u H21
2017-12-06 02:55:26 C 00 35 42.28 +04 16 02.9 u H21
2017-12-06 02:57:29 C 00 35 42.46 +04 16 01.4 u H21
2017-12-06 02:59:32 C 00 35 42.67 +04 15 59.5 u H21
2017-12-06 03:01:35 C 00 35 42.86 +04 15 57.9 u H21
2017-12-06 03:03:38 C 00 35 43.05 +04 15 56.1 u H21
2017-12-06 03:05:41 C 00 35 43.25 +04 15 54.7 u H21
2017-12-06 03:07:44 C 00 35 43.44 +04 15 53.1 u H21
2017-12-06 03:09:35 C 00 35 43.62 +04 15 51.7 u H21
2017-12-06 03:11:26 C 00 35 43.80 +04 15 50.2 u H21
2017-12-06 18:17:10 C 00 37 15.99 +04 03 58.2 q 006
2017-12-06 18:21:10 C 00 37 16.36 +04 03 55.2 q 006
2017-12-06 18:25:11 C 00 37 16.76 +04 03 51.9 q 006
2017-12-06 18:29:11 C 00 37 17.15 +04 03 48.8 q 006
2017-12-06 18:34:11 C 00 37 17.65 +04 03 45.1 q 006
2017-12-06 18:37:10 C 00 37 17.92 +04 03 42.7 q 006
2017-12-06 18:41:11 C 00 37 18.30 +04 03 39.3 q 006
2017-12-06 18:45:11 C 00 37 18.70 +04 03 36.2 q 006
2017-12-08 04:52:53 C 00 40 51.44 +03 37 16.7 U 703
2017-12-08 05:00:33 C 00 40 52.20 +03 37 11.0 U 703
2017-12-08 05:08:12 C 00 40 52.97 +03 37 05.2 U 703
2017-12-08 05:15:50 C 00 40 53.76 +03 36 59.2 U 703