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
2018-01-06 08:09:10 C 02 27 35.94 -02 36 07.6 U T08
2018-01-06 10:25:38 S 02 28 02.80 -02 36 33.4 L C51
2018-01-06 13:34:08 S 02 28 38.70 -02 37 22.1 L C51
2018-01-06 16:42:38 S 02 29 14.64 -02 38 10.1 L C51
2018-01-06 19:51:08 S 02 29 50.62 -02 38 57.8 L C51
2018-01-06 22:59:38 S 02 30 26.64 -02 39 44.9 L C51
2018-01-07 02:08:08 S 02 31 02.71 -02 40 31.5 L C51
2018-01-07 05:16:38 S 02 31 38.82 -02 41 17.6 L C51
2018-01-07 08:25:09 S 02 32 14.95 -02 42 03.0 L C51
2018-01-07 11:33:38 S 02 32 51.14 -02 42 47.9 L C51
2018-01-07 14:42:08 S 02 33 27.36 -02 43 32.4 L C51
2018-01-07 17:50:39 S 02 34 03.63 -02 44 16.2 L C51
2018-01-07 20:59:09 S 02 34 39.92 -02 44 59.6 L C51
2018-01-08 00:07:38 S 02 35 16.26 -02 45 42.5 L C51
2018-01-08 03:16:09 S 02 35 52.630 -02 46 24.85 L C51
2018-01-08 05:48:52 C 02 36 21.23 -02 47 13.8 U 703
2018-01-08 05:56:51 C 02 36 22.72 -02 47 14.2 U 703
2018-01-08 06:04:52 C 02 36 24.20 -02 47 16.6 U 703
2018-01-08 06:12:51 C 02 36 25.70 -02 47 18.4 U 703
2018-01-08 06:24:39 S 02 36 29.05 -02 47 06.6 L C51
2018-01-08 09:33:09 S 02 37 05.50 -02 47 47.8 L C51
2018-01-08 12:41:39 S 02 37 41.99 -02 48 28.5 L C51
2018-01-08 15:50:09 S 02 38 18.53 -02 49 08.8 L C51
2018-01-08 18:59:23 S 02 38 55.24 -02 49 49.9 L C51
2018-01-08 22:07:53 S 02 39 31.83 -02 50 29.1 L C51
2018-01-09 01:16:23 S 02 40 08.47 -02 51 07.7 L C51
2018-01-09 04:24:10 S 02 40 44.99 -02 51 44.4 L C51
2018-01-09 07:32:39 S 02 41 21.69 -02 52 21.7 L C51
2018-01-09 10:41:09 S 02 41 58.42 -02 52 58.6 L C51
2018-01-09 13:49:40 S 02 42 35.20 -02 53 35.0 L C51
2018-01-09 16:58:09 S 02 43 12.01 -02 54 10.9 L C51
2018-01-09 20:06:39 S 02 43 48.85 -02 54 46.4 L C51
2018-01-09 23:15:10 S 02 44 25.72 -02 55 21.2 L C51
2018-01-10 02:23:40 S 02 45 02.63 -02 55 55.6 L C51
2018-01-10 05:32:10 S 02 45 39.56 -02 56 29.4 L C51
2018-01-10 07:34:14 C 02 46 02.84 -02 57 00.3 U T08
2018-01-10 07:45:44 C 02 46 05.02 -02 57 02.2 U T08
2018-01-10 07:57:13 C 02 46 07.19 -02 57 04.3 U T08
2018-01-10 08:08:48 C 02 46 09.40 -02 57 06.3 U T08
2018-01-10 08:40:40 S 02 46 16.53 -02 57 02.5 L C51
2018-01-10 11:49:10 S 02 46 53.53 -02 57 35.3 L C51
2018-01-10 14:57:40 S 02 47 30.559 -02 58 07.28 L C51
2018-01-10 18:06:10 S 02 48 07.63 -02 58 38.9 L C51
2018-01-10 21:14:40 S 02 48 44.72 -02 59 09.8 L C51
2018-01-11 00:23:11 S 02 49 21.85 -02 59 40.5 L C51
2018-01-11 03:31:40 S 02 49 59.00 -03 00 10.4 L C51
2018-01-11 06:40:10 S 02 50 36.17 -03 00 40.0 L C51
2018-01-11 09:48:41 S 02 51 13.38 -03 01 08.9 L C51
2018-01-11 12:57:10 S 02 51 50.63 -03 01 37.1 L C51
2018-01-11 14:31:25 S 02 52 09.26 -03 01 51.1 L C51