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
2017-12-29 20:26:47 C 01 54 46.24 -01 35 20.6 q Z57
2017-12-29 20:31:13 C 01 54 46.95 -01 35 21.7 q Z57
2017-12-29 20:32:22 C 01 54 47.18 -01 35 22.6 q Z36
2017-12-29 20:35:43 C 01 54 47.72 -01 35 24.2 q Z57
2017-12-31 07:25:07 C 02 00 55.45 -01 49 12.7 U T05
2017-12-31 07:27:11 C 02 00 55.80 -01 49 13.3 U T05
2017-12-31 07:37:28 C 02 00 57.57 -01 49 17.3 U T05
2017-12-31 07:39:35 C 02 00 57.92 -01 49 18.0 U T05
2017-12-31 07:49:03 C 02 00 59.55 -01 49 21.8 U T05
2017-12-31 07:51:03 C 02 00 59.90 -01 49 22.4 U T05
2017-12-31 07:53:49 C 02 01 00.36 -01 49 23.2 U T05
2017-12-31 08:03:27 C 02 01 02.02 -01 49 27.2 U T05
2018-01-01 22:25:59 C 02 07 56.09 -02 03 39.0 o Z22
2018-01-01 22:27:50 C 02 07 56.47 -02 03 39.8 o Z22
2018-01-01 22:29:40 C 02 07 56.82 -02 03 40.4 o Z22
2018-01-01 22:31:36 C 02 07 57.10 -02 03 41.4 o Z22
2018-01-02 00:52:24 C 02 08 22.13 -02 04 30.2 o Z22
2018-01-02 07:45:11 C 02 09 37.85 -02 06 50.8 U T08
2018-01-02 07:56:54 C 02 09 39.90 -02 06 55.2 U T08
2018-01-02 08:08:42 C 02 09 41.98 -02 06 59.3 U T08
2018-01-02 08:20:27 C 02 09 44.04 -02 07 02.8 U T08
2018-01-03 22:44:07 S 02 16 49.164 -02 19 29.89 L C51
2018-01-04 01:52:37 S 02 17 24.199 -02 20 28.32 L C51
2018-01-04 05:01:07 S 02 17 59.282 -02 21 26.39 L C51
2018-01-04 07:26:23 C 02 18 25.76 -02 22 20.6 U T05
2018-01-04 07:38:44 C 02 18 27.97 -02 22 24.3 U T05
2018-01-04 07:50:37 C 02 18 30.12 -02 22 27.9 U T05
2018-01-04 08:02:23 C 02 18 32.24 -02 22 31.5 U T05
2018-01-04 11:18:07 S 02 19 09.610 -02 23 20.80 L C51
2018-01-04 14:26:37 S 02 19 44.825 -02 24 17.35 L C51
2018-01-04 14:26:48 S 02 19 44.858 -02 24 17.64 L C51
2018-01-04 17:35:07 S 02 20 20.105 -02 25 13.15 L C51
2018-01-04 20:43:37 S 02 20 55.426 -02 26 08.59 L C51
2018-01-04 23:52:07 S 02 21 30.797 -02 27 03.60 L C51
2018-01-05 03:00:37 S 02 22 06.199 -02 27 57.92 L C51
2018-01-05 06:09:07 S 02 22 41.657 -02 28 51.92 L C51
2018-01-05 09:17:37 S 02 23 17.172 -02 29 45.28 L C51
2018-01-05 12:26:07 S 02 23 52.721 -02 30 38.02 L C51
2018-01-05 15:34:37 S 02 24 28.318 -02 31 30.32 L C51
2018-01-05 21:51:38 S 02 25 39.63 -02 33 13.5 L C51
2018-01-06 01:00:08 S 02 26 15.36 -02 34 04.3 L C51
2018-01-06 04:08:37 S 02 26 51.13 -02 34 54.5 L C51
2018-01-06 05:13:08 C 02 27 02.57 -02 35 26.1 U 703
2018-01-06 05:20:50 C 02 27 03.99 -02 35 27.9 U 703
2018-01-06 05:28:32 C 02 27 05.42 -02 35 29.9 U 703
2018-01-06 05:36:14 C 02 27 06.84 -02 35 31.9 U 703
2018-01-06 07:17:08 S 02 27 26.94 -02 35 44.1 L C51
2018-01-06 07:34:43 C 02 27 29.61 -02 35 58.3 U T08
2018-01-06 07:46:11 C 02 27 31.72 -02 36 01.2 U T08
2018-01-06 07:57:38 C 02 27 33.82 -02 36 04.2 U T08