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
2021-07-07 05:32:35 C 20 06 27.20 -09 26 06.6 u H21
2021-07-10 11:22:23 C 20 03 43.843 -09 28 52.26 U F51
2021-07-10 11:43:33 C 20 03 43.073 -09 28 52.83 U F51
2021-07-10 11:44:44 C 20 03 43.023 -09 28 52.82 U F51
2021-07-10 12:06:39 C 20 03 42.208 -09 28 53.76 U F51
2021-07-10 12:29:31 C 20 03 41.398 -09 28 54.68 U F51
2021-07-10 12:30:42 C 20 03 41.354 -09 28 54.89 U F51
2022-08-10 02:39:53 C 04 59 48.99 +25 58 09.0 X C95
2022-08-10 03:10:43 C 04 59 54.36 +25 58 09.6 X C95
2022-09-28 10:53:57 C 08 30 41.105 +16 04 02.64 V V00
2022-09-28 11:01:01 C 08 30 42.307 +16 03 55.94 V V00
2022-09-28 11:08:06 C 08 30 43.466 +16 03 49.25 V V00
2022-09-28 11:15:11 C 08 30 44.593 +16 03 42.91 V V00
2022-10-30 14:58:25 C 10 23 01.331 +03 06 32.91 U F51
2022-10-30 15:04:05 C 10 23 02.041 +03 06 27.25 U F51
2022-10-30 15:09:41 C 10 23 02.747 +03 06 21.66 U F51
2022-10-30 15:15:19 C 10 23 03.456 +03 06 16.00 U F51
2022-10-31 11:42:04 C 10 25 39.162 +02 45 41.94 V 703
2022-10-31 11:49:47 C 10 25 40.159 +02 45 34.70 V 703
2022-10-31 11:57:29 C 10 25 41.070 +02 45 27.79 V 703
2022-10-31 12:05:12 C 10 25 41.952 +02 45 18.83 V 703
2022-11-16 11:33:19 C 11 10 58.598 -03 22 25.32 V 703
2022-11-16 11:40:32 C 11 10 59.315 -03 22 31.51 V 703
2022-11-16 11:54:59 C 11 11 00.888 -03 22 45.01 V 703
2022-12-22 11:18:17 C 12 30 05.191 -14 20 21.91 V 703
2022-12-22 11:26:04 C 12 30 05.735 -14 20 26.66 V 703
2022-12-22 11:41:39 C 12 30 07.002 -14 20 36.38 V 703
2023-01-03 07:55:57 C 12 48 41.796 -16 57 13.00 V W68
2023-01-03 08:11:10 C 12 48 42.629 -16 57 20.63 V W68
2023-01-03 08:21:55 C 12 48 43.260 -16 57 26.71 V W68
2023-01-03 08:27:45 C 12 48 43.610 -16 57 29.09 V W68
2023-01-19 15:28:07 C 13 07 01.536 -19 41 36.93 U F52
2023-01-19 15:35:33 C 13 07 01.778 -19 41 39.49 U F52
2023-01-19 15:42:58 C 13 07 02.019 -19 41 41.99 U F52
2023-01-19 15:50:22 C 13 07 02.265 -19 41 44.57 U F52
2023-01-22 11:19:52 C 13 09 14.533 -20 03 40.75 V 703
2023-01-22 11:27:18 C 13 09 14.656 -20 03 43.31 V 703
2023-01-22 11:34:46 C 13 09 14.839 -20 03 44.42 V 703
2023-01-22 11:42:13 C 13 09 15.077 -20 03 47.59 V 703
2023-01-28 11:17:02 C 13 12 54.090 -20 43 39.83 V G96
2023-01-28 11:24:25 C 13 12 54.220 -20 43 41.74 V G96
2023-01-28 11:31:50 C 13 12 54.367 -20 43 43.68 V G96
2023-01-28 11:39:13 C 13 12 54.497 -20 43 45.34 V G96
2023-03-19 10:36:25 C 12 48 56.384 -19 05 52.82 U F52
2023-03-19 10:52:04 C 12 48 55.589 -19 05 46.37 U F52
2023-03-19 11:07:42 C 12 48 54.796 -19 05 39.93 U F52
2023-03-19 11:23:21 C 12 48 54.004 -19 05 33.47 U F52
2023-03-20 06:15:34 C 12 47 58.860 -18 57 33.05 V W68
2023-03-20 06:19:36 C 12 47 58.627 -18 57 31.10 V W68
2023-03-20 06:53:23 C 12 47 56.916 -18 57 17.06 V W68