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
2018-01-11 16:05:40 S 02 52 27.90 -03 02 05.0 L C51
2018-01-11 19:14:11 S 02 53 05.18 -03 02 32.5 L C51
2018-01-11 20:48:26 S 02 53 23.83 -03 02 45.8 L C51
2018-01-11 22:22:41 S 02 53 42.50 -03 02 59.2 L C51
2018-01-11 23:56:55 S 02 54 01.17 -03 03 12.3 L C51
2018-01-12 01:31:11 S 02 54 19.858 -03 03 25.24 L C51
2018-01-12 03:05:26 S 02 54 38.53 -03 03 38.2 L C51
2018-01-12 04:39:41 S 02 54 57.25 -03 03 50.8 L C51
2018-01-12 05:54:10 C 02 55 12.054 -03 04 10.98 U F51
2018-01-12 06:10:28 C 02 55 15.168 -03 04 13.13 U F51
2018-01-12 06:13:56 S 02 55 15.93 -03 04 03.6 L C51
2018-01-12 06:26:35 C 02 55 18.245 -03 04 15.77 U F51
2018-01-12 06:42:45 C 02 55 21.364 -03 04 17.48 U F51
2018-01-12 07:23:15 C 02 55 29.11 -03 04 22.7 U T05
2018-01-12 07:35:32 C 02 55 31.48 -03 04 24.5 U T05
2018-01-12 07:47:54 C 02 55 33.86 -03 04 26.0 U T05
2018-01-12 07:48:11 S 02 55 34.64 -03 04 16.1 L C51
2018-01-12 07:59:26 C 02 55 36.07 -03 04 27.5 U T05
2018-01-12 09:22:26 S 02 55 53.340 -03 04 28.38 L C51
2018-01-12 12:30:56 S 02 56 30.785 -03 04 52.75 L C51
2018-01-12 15:39:26 S 02 57 08.256 -03 05 16.48 L C51
2018-01-12 18:47:56 S 02 57 45.737 -03 05 39.70 L C51
2018-01-12 21:56:26 S 02 58 23.246 -03 06 02.48 L C51
2018-01-13 01:04:56 S 02 59 00.792 -03 06 24.80 L C51
2018-01-13 03:59:43 C 02 59 35.24 -03 06 59.3 U 703
2018-01-13 04:07:20 C 02 59 36.71 -03 07 00.2 U 703
2018-01-13 04:13:26 S 02 59 38.345 -03 06 46.30 L C51
2018-01-13 04:14:57 C 02 59 38.18 -03 07 00.9 U 703
2018-01-13 04:22:34 C 02 59 39.65 -03 07 01.9 U 703
2018-01-13 07:21:56 S 03 00 15.962 -03 07 07.39 L C51
2018-01-13 10:30:27 S 03 00 53.544 -03 07 27.98 L C51
2018-01-13 13:38:57 S 03 01 31.178 -03 07 48.07 L C51
2018-01-13 16:47:27 S 03 02 08.827 -03 08 07.30 L C51
2018-01-13 20:25:20 C 03 02 51.89 -03 08 47.7 q 160
2018-01-13 20:27:17 C 03 02 52.26 -03 08 47.9 q 160
2018-01-13 20:29:35 C 03 02 52.72 -03 08 47.4 q 160
2018-01-13 23:04:27 S 03 03 24.194 -03 08 44.77 L C51
2018-01-14 02:12:57 S 03 04 01.925 -03 09 02.59 L C51
2018-01-14 05:21:27 S 03 04 39.655 -03 09 19.98 L C51
2018-01-14 07:59:27 C 03 05 10.49 -03 09 43.5 U T08
2018-01-14 08:08:22 C 03 05 12.22 -03 09 44.7 U T08
2018-01-14 08:13:45 C 03 05 13.26 -03 09 44.7 U T08
2018-01-14 08:28:07 C 03 05 16.05 -03 09 45.9 U T08
2018-01-14 08:29:57 S 03 05 17.412 -03 09 36.76 L C51
2018-01-14 08:37:03 C 03 05 17.80 -03 09 46.8 U T08
2018-01-14 08:42:32 C 03 05 18.87 -03 09 47.3 U T08
2018-01-14 11:38:27 S 03 05 55.186 -03 09 52.99 L C51
2018-01-14 14:46:57 S 03 06 32.981 -03 10 08.76 L C51
2018-01-14 17:55:27 S 03 07 10.781 -03 10 23.99 L C51
2018-01-14 21:03:57 S 03 07 48.624 -03 10 38.75 L C51