IAA RAS IAA Minor Planet Database

2018 ST1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6284847930
Semi-major axis (a)2.4363074813 AU
Inclination (i)3.67770318°
Long. of Asc. Node (Ω)188.98233268°
Arg. of Perihelion (ω)214.47812760° ± 6.00e+00
Mean Anomaly (M)310.02014159°
Mean Motion (n)0.2591910000°/day
Perihelion dist (q)0.90512600 AU
Aphelion dist (Q)3.96738420 AU
Orbital Period3.80263060 yr
Physical Parameters
H (abs. magnitude)25.10
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.459″
Uncertainty—
Orbit TypeApollo
MOID0.008216 AU
Observations Used42
Oppositions1
Arc Total2018-2018
First Observation Used—
Last Observation Used2018-09-24
Observations (45)
Date Type RA Dec Mag Band Observatory
2018-09-22 05:47:45 C 22 40 36.40 +35 00 46.7 – U I41
2018-09-22 06:44:24 C 22 41 24.38 +35 31 31.1 – U I41
2018-09-22 06:44:54 C 22 41 24.78 +35 31 48.7 – U I41
2018-09-22 07:13:27 C 22 41 49.84 +35 47 28.3 – U I41
2018-09-22 07:13:57 C 22 41 50.23 +35 47 45.2 – U I41
2018-09-22 07:33:27 C 22 42 07.71 +35 58 31.6 – U I41
2018-09-22 07:33:57 C 22 42 08.12 +35 58 48.4 – U I41
2018-09-22 07:34:07 C 22 42 08.35 +35 58 53.2 – U I41
2018-09-22 07:34:37 C 22 42 08.68 +35 59 10.3 – U I41
2018-09-22 08:10:16 C 22 42 41.45 +36 19 02.3 – U I41
2018-09-22 08:10:46 C 22 42 41.84 +36 19 18.8 – U I41
2018-09-22 23:21:32 C 23 06 05.79 +46 44 35.6 17.3 V 104
2018-09-22 23:23:34 C 23 06 09.86 +46 46 15.0 18.0 V 104
2018-09-22 23:27:38 C 23 06 18.16 +46 49 34.1 17.8 V 104
2018-09-22 23:56:17 C 23 07 17.33 +47 13 00.3 17.3 V 104
2018-09-22 23:58:18 C 23 07 21.54 +47 14 40.2 17.2 V 104
2018-09-23 03:11:46 C 23 16 26.95 +50 00 36.9 – V V03
2018-09-23 03:12:23 C 23 16 28.62 +50 01 10.6 – V V03
2018-09-23 03:13:23 C 23 16 31.20 +50 02 05.5 – V V03
2018-09-23 03:29:34 C 23 17 14.26 +50 16 53.1 – V V03
2018-09-23 03:30:05 C 23 17 15.70 +50 17 21.3 – V V03
2018-09-23 03:30:36 C 23 17 16.95 +50 17 50.1 – V V03
2018-09-23 03:31:04 C 23 17 18.27 +50 18 15.5 – V V03
2018-09-23 20:50:49 C 00 57 14.25 +67 22 30.9 – V J95
2018-09-23 20:54:54 C 00 57 58.81 +67 26 27.5 – V J95
2018-09-23 20:59:04 C 00 58 44.46 +67 30 27.4 – V J95
2018-09-23 21:03:15 C 00 59 30.58 +67 34 27.8 – V J95
2018-09-23 21:07:28 C 01 00 17.55 +67 38 30.4 – V J95
2018-09-23 22:47:58 C 01 20 20.67 +69 10 42.5 – V Z80
2018-09-23 22:59:26 C 01 22 49.61 +69 20 38.7 – V Z80
2018-09-23 23:10:12 C 01 25 13.78 +69 29 58.4 – V J69
2018-09-23 23:11:12 C 01 25 27.31 +69 30 48.3 – V J69
2018-09-23 23:12:57 C 01 25 48.20 +69 32 11.8 – V Z80
2018-09-23 23:13:32 C 01 25 58.40 +69 32 47.5 – V J69
2018-09-24 00:09:37 C 01 38 56.55 +70 18 24.4 – V J95
2018-09-24 00:59:42 C 01 51 24.86 +70 56 03.6 – V J95
2018-09-24 01:04:09 C 01 52 33.97 +70 59 14.6 – V J95
2018-09-24 01:08:39 C 01 53 43.98 +71 02 26.4 – V J95
2018-09-24 21:48:29 C 07 23 30.73 +63 30 33.2 – V J95
2018-09-24 22:05:43 C 07 25 42.72 +63 13 46.9 – V J95
2018-09-24 22:22:23 C 07 27 47.12 +62 57 31.4 – V J95
2018-09-24 22:30:51 C 07 28 48.96 +62 49 17.0 – V J95
2018-09-24 22:39:06 C 07 29 48.56 +62 41 14.1 – V J95
2018-09-24 22:47:07 C 07 30 45.87 +62 33 24.9 – V J95
2018-09-24 22:56:12 C 07 31 49.84 +62 24 34.6 – V J95