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
2017-12-09 05:05:13 C 00 43 28.95 +03 18 56.2 U 703
2017-12-09 05:13:15 C 00 43 29.80 +03 18 50.2 U 703
2017-12-09 05:21:18 C 00 43 30.64 +03 18 44.2 U 703
2017-12-09 05:29:20 C 00 43 31.49 +03 18 37.9 U 703
2017-12-09 07:14:29 C 00 43 43.45 +03 17 24.8 U T08
2017-12-09 07:24:35 C 00 43 44.51 +03 17 16.6 U T08
2017-12-09 07:27:57 C 00 43 44.87 +03 17 14.3 U T08
2017-12-09 07:34:49 C 00 43 45.58 +03 17 09.3 U T08
2017-12-09 07:38:09 C 00 43 45.91 +03 17 06.7 U T08
2017-12-09 07:44:57 C 00 43 46.63 +03 17 01.6 U T08
2017-12-09 07:48:17 C 00 43 46.97 +03 16 59.1 U T08
2017-12-09 07:58:45 C 00 43 48.07 +03 16 51.1 U T08
2017-12-09 21:18:07 C 00 45 17.35 +03 06 44.8 q 160
2017-12-09 21:21:01 C 00 45 17.68 +03 06 42.7 q 160
2017-12-09 21:23:51 C 00 45 17.98 +03 06 40.6 q 160
2017-12-11 07:28:39 C 00 49 13.25 +02 41 50.6 U T05
2017-12-11 07:38:36 C 00 49 14.36 +02 41 43.5 U T05
2017-12-11 07:48:47 C 00 49 15.51 +02 41 35.9 U T05
2017-12-11 07:58:53 C 00 49 16.62 +02 41 28.6 U T05
2017-12-13 07:19:56 C 00 55 00.13 +02 07 52.3 U T08
2017-12-13 07:30:02 C 00 55 01.32 +02 07 45.2 U T08
2017-12-13 07:40:14 C 00 55 02.52 +02 07 38.3 U T08
2017-12-13 07:50:25 C 00 55 03.72 +02 07 31.0 U T08
2017-12-15 04:01:14 C 01 00 41.64 +01 37 17.7 U 703
2017-12-15 04:08:53 C 01 00 42.60 +01 37 12.2 U 703
2017-12-15 04:16:32 C 01 00 43.56 +01 37 07.0 U 703
2017-12-15 04:24:10 C 01 00 44.46 +01 37 02.2 U 703
2017-12-17 03:41:29 C 01 07 04.39 +01 06 07.7 U I41
2017-12-17 04:03:50 C 01 07 07.31 +01 05 53.4 U I41
2017-12-17 04:55:06 C 01 07 14.04 +01 05 20.7 U I41
2017-12-17 05:12:19 C 01 07 16.30 +01 05 09.7 U I41
2017-12-17 20:50:20 C 01 09 26.01 +00 55 13.3 q 160
2017-12-17 20:53:16 C 01 09 26.40 +00 55 11.4 q 160
2017-12-17 20:56:13 C 01 09 26.79 +00 55 09.7 q 160
2017-12-18 02:51:55 C 01 10 17.37 +00 51 31.0 U I41
2017-12-18 03:03:23 C 01 10 18.90 +00 51 23.9 U I41
2017-12-18 04:14:02 C 01 10 28.36 +00 50 39.8 U I41
2017-12-18 04:32:38 C 01 10 30.85 +00 50 28.4 U I41
2017-12-18 06:30:19 C 01 10 46.78 +00 49 15.2 U I41
2017-12-20 02:39:52 C 01 17 08.32 +00 22 32.0 U G96
2017-12-20 02:48:02 C 01 17 09.46 +00 22 27.2 U G96
2017-12-20 02:56:10 C 01 17 10.60 +00 22 22.4 U G96
2017-12-20 03:04:19 C 01 17 11.74 +00 22 17.5 U G96
2017-12-20 05:52:05 C 01 17 35.39 +00 20 39.1 o 691
2017-12-20 06:09:54 C 01 17 37.93 +00 20 28.5 o 691
2017-12-20 06:27:22 C 01 17 40.44 +00 20 18.3 o 691
2017-12-21 04:51:41 S 01 21 01.18 +00 07 32.1 L C51
2017-12-21 08:00:10 S 01 21 29.49 +00 05 44.5 L C51
2017-12-21 11:08:40 S 01 21 57.86 +00 03 57.4 L C51
2017-12-21 14:17:11 S 01 22 26.31 +00 02 10.8 L C51