IAA RAS IAA Minor Planet Database

2018 SM

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4683954000
Semi-major axis (a)1.7875409000 AU
Inclination (i)8.97921000°
Long. of Asc. Node (Ω)172.80817000°
Arg. of Perihelion (ω)145.91222000°
Mean Anomaly (M)13.02571000°
Mean Motion (n)0.4124013700°/day
Perihelion dist (q)0.95026500 AU
Aphelion dist (Q)2.62481680 AU
Orbital Period2.38992340 yr
Physical Parameters
H (abs. magnitude)29.40
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.430″
Uncertainty5
Orbit TypeApollo
MOID0.001182 AU
Observations Used18
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2018-09-18
Observations (18)
Date Type RA Dec Mag Band Observatory
2018-09-16 09:13:57 C 02 33 55.15 -13 39 57.5 – U I41
2018-09-16 09:14:27 C 02 33 54.48 -13 40 14.8 – U I41
2018-09-16 10:02:18 C 02 32 44.03 -14 04 15.6 – V 703
2018-09-16 10:20:16 C 02 32 44.49 -14 12 55.4 – U I41
2018-09-16 10:20:47 C 02 32 43.96 -14 13 08.7 – U I41
2018-09-16 10:25:20 C 02 32 21.15 -14 14 38.4 – V 703
2018-09-16 11:17:38 C 02 31 34.86 -14 35 31.6 – V I52
2018-09-16 11:17:49 C 02 31 34.70 -14 35 36.4 – V I52
2018-09-16 11:18:00 C 02 31 34.58 -14 35 40.4 – V I52
2018-09-16 11:18:11 C 02 31 34.40 -14 35 44.3 – V I52
2018-09-17 08:16:24 C 02 31 13.29 -17 37 04.2 – V I52
2018-09-17 08:18:12 C 02 31 12.77 -17 37 10.7 – V I52
2018-09-17 08:22:26 C 02 31 11.56 -17 37 27.2 – V I52
2018-09-17 08:24:13 C 02 31 11.04 -17 37 34.1 – V I52
2018-09-18 08:05:43 C 02 30 34.88 -18 23 07.8 – V V06
2018-09-18 08:10:38 C 02 30 34.11 -18 23 15.5 – V V06
2018-09-18 08:15:30 C 02 30 33.36 -18 23 22.7 – V V06
2018-09-18 08:20:23 C 02 30 32.57 -18 23 29.5 – V V06