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
2018-03-23 08:36:42 S 07 39 30.18 +03 19 15.9 L C51
2018-03-23 11:45:12 S 07 39 52.858 +03 19 50.63 L C51
2018-03-23 14:53:42 S 07 40 15.48 +03 20 22.9 L C51
2018-03-23 18:02:12 S 07 40 38.141 +03 20 55.14 L C51
2018-03-23 19:50:34 C 07 40 50.94 +03 21 08.4 q 160
2018-03-23 19:53:36 C 07 40 51.26 +03 21 08.4 q 160
2018-03-23 19:56:36 C 07 40 51.60 +03 21 09.0 q 160
2018-03-23 21:10:42 S 07 41 00.64 +03 21 27.8 L C51
2018-03-24 00:19:13 S 07 41 23.25 +03 21 58.1 L C51
2018-03-24 03:26:59 S 07 41 45.65 +03 22 32.9 L C51
2018-03-24 08:10:28 S 07 42 19.49 +03 23 20.3 L C51
2018-03-24 09:44:43 S 07 42 30.634 +03 23 37.10 L C51
2018-03-24 11:18:14 S 07 42 41.80 +03 23 51.9 L C51
2018-03-24 12:53:13 S 07 42 53.15 +03 24 07.3 L C51
2018-03-24 14:27:28 S 07 43 04.39 +03 24 23.6 L C51
2018-03-24 16:01:43 S 07 43 15.590 +03 24 38.84 L C51
2018-03-24 17:35:58 S 07 43 26.78 +03 24 54.9 L C51
2018-03-24 19:10:13 S 07 43 37.98 +03 25 11.2 L C51
2018-03-24 20:13:24 C 07 43 45.26 +03 25 14.6 Q 160
2018-03-24 20:16:20 C 07 43 45.61 +03 25 15.3 Q 160
2018-03-24 20:19:16 C 07 43 46.00 +03 25 15.4 Q 160
2018-03-24 20:44:28 S 07 43 49.13 +03 25 25.4 L C51
2018-03-24 22:18:33 S 07 44 00.31 +03 25 42.2 L C51
2018-03-24 22:18:43 S 07 44 00.27 +03 25 42.0 L C51
2018-03-25 01:27:02 S 07 44 22.63 +03 26 12.0 L C51
2018-03-25 01:27:14 S 07 44 22.60 +03 26 11.6 L C51
2018-03-25 03:00:44 S 07 44 33.74 +03 26 28.3 L C51
2018-03-25 04:35:32 S 07 44 44.93 +03 26 43.3 L C51
2018-03-25 06:09:48 S 07 44 56.05 +03 26 58.1 L C51
2018-03-25 09:18:18 S 07 45 18.38 +03 27 30.7 L C51
2018-03-25 12:26:03 S 07 45 40.56 +03 27 59.5 L C51
2018-03-25 12:26:15 S 07 45 40.54 +03 27 59.1 L C51
2018-03-25 15:35:18 S 07 46 02.92 +03 28 28.5 L C51
2018-03-25 18:43:48 S 07 46 25.10 +03 28 58.3 L C51
2018-03-25 20:35:58 C 07 46 38.01 +03 29 09.3 q 160
2018-03-25 20:39:01 C 07 46 38.37 +03 29 09.8 q 160
2018-03-25 20:42:04 C 07 46 38.76 +03 29 10.0 q 160
2018-03-31 01:57:00 S 08 01 02.92 +03 46 18.4 L C51
2018-03-31 05:05:29 S 08 01 24.08 +03 46 39.6 L C51
2018-03-31 14:30:49 S 08 02 27.50 +03 47 43.0 L C51
2018-04-01 04:39:04 S 08 04 02.14 +03 49 15.3 L C51
2018-04-01 06:13:20 S 08 04 12.73 +03 49 23.8 L C51
2018-04-01 07:47:34 S 08 04 23.14 +03 49 36.1 L C51
2018-04-01 09:21:49 S 08 04 33.64 +03 49 44.8 L C51
2018-04-01 10:56:04 S 08 04 44.14 +03 49 54.6 L C51
2018-04-01 12:30:19 S 08 04 54.61 +03 50 05.4 L C51
2018-04-01 14:04:34 S 08 05 05.05 +03 50 13.9 L C51
2018-04-01 15:38:50 S 08 05 15.51 +03 50 24.0 L C51
2018-04-01 17:13:05 S 08 05 25.95 +03 50 33.7 L C51
2018-04-01 21:55:49 S 08 05 57.29 +03 51 02.5 L C51