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
2017-10-22 05:47:50 C 00 06 54.86 +19 43 28.1 U G96
2017-10-22 06:15:02 C 00 06 53.90 +19 43 09.8 U 703
2017-10-22 06:23:09 C 00 06 53.62 +19 43 04.5 U 703
2017-10-22 06:31:07 C 00 06 53.34 +19 42 59.2 U 703
2017-10-22 06:39:03 C 00 06 53.06 +19 42 53.9 U 703
2017-10-22 17:01:47 C 00 06 35.23 +19 36 00.5 q C97
2017-10-22 17:04:08 C 00 06 35.14 +19 35 59.0 q C97
2017-10-22 17:06:35 C 00 06 35.07 +19 35 57.4 q C97
2017-10-22 17:08:57 C 00 06 34.98 +19 35 55.8 q C97
2017-10-22 19:27:40 C 00 06 31.26 +19 34 16.2 d Z35
2017-10-22 19:51:40 C 00 06 30.49 +19 34 01.0 d Z35
2017-10-22 20:09:40 C 00 06 29.87 +19 33 48.0 d Z35
2017-10-23 09:30:32 C 00 06 05.81 +19 24 48.5 T08
2017-10-23 09:49:29 C 00 06 05.17 +19 24 35.5 T08
2017-10-23 10:04:16 C 00 06 04.67 +19 24 25.1 T08
2017-10-23 10:18:56 C 00 06 04.19 +19 24 14.8 T08
2017-10-23 21:44:40 C 00 05 45.37 +19 16 12.0 q 160
2017-10-23 21:46:47 C 00 05 45.30 +19 16 10.7 q 160
2017-10-23 21:48:52 C 00 05 45.26 +19 16 09.4 q 160
2017-10-23 23:47:04 C 00 05 43.03 +19 14 47.1 U W34
2017-10-24 00:04:01 C 00 05 42.51 +19 14 35.6 U W34
2017-10-24 00:24:05 C 00 05 41.90 +19 14 21.7 U W34
2017-10-24 00:37:10 C 00 05 41.49 +19 14 12.8 U W34
2017-10-24 05:14:10 C 00 05 33.13 +19 11 00.5 U 703
2017-10-24 05:22:05 C 00 05 32.89 +19 10 54.8 U 703
2017-10-24 05:29:58 C 00 05 32.59 +19 10 49.0 U 703
2017-10-24 05:37:50 C 00 05 32.39 +19 10 43.5 U 703
2017-10-24 22:17:54 C 00 05 05.67 +18 58 48.7 U J27
2017-10-24 22:26:04 C 00 05 05.43 +18 58 42.8 U J27
2017-10-24 22:31:36 C 00 05 05.25 +18 58 38.7 U J27
2017-10-25 00:04:25 C 00 05 02.43 +18 57 32.2 d Z35
2017-10-25 00:24:06 C 00 05 01.80 +18 57 18.1 d Z35
2017-10-25 00:44:26 C 00 05 01.20 +18 57 02.2 d Z35
2017-10-26 20:34:13 C 00 03 57.53 +18 24 39.5 q 160
2017-10-26 20:36:16 C 00 03 57.48 +18 24 38.0 q 160
2017-10-26 20:38:22 C 00 03 57.42 +18 24 36.4 q 160
2017-10-27 05:05:39 C 00 03 45.86 +18 18 15.2 U 703
2017-10-27 05:13:24 C 00 03 45.61 +18 18 08.9 U 703
2017-10-27 05:21:13 C 00 03 45.43 +18 18 03.3 U 703
2017-10-27 05:29:00 C 00 03 45.22 +18 17 57.3 U 703
2017-10-27 09:03:03 C 00 03 40.27 +18 15 18.1 T08
2017-10-27 09:10:51 C 00 03 40.06 +18 15 12.2 T08
2017-10-27 09:24:25 C 00 03 39.69 +18 15 01.5 T08
2017-10-27 09:39:29 C 00 03 39.27 +18 14 49.9 T08
2017-10-27 20:45:30 C 00 03 25.54 +18 06 09.9 U 160
2017-10-27 20:47:30 C 00 03 25.51 +18 06 08.0 U 160
2017-10-27 20:49:30 C 00 03 25.44 +18 06 06.2 U 160
2017-10-29 08:42:50 C 00 02 42.99 +17 38 01.0 T05
2017-10-29 09:06:40 C 00 02 42.43 +17 37 41.8 T05
2017-10-29 09:07:19 C 00 02 42.42 +17 37 41.3 T05