IAA RAS IAA Minor Planet Database

2022 SM21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6297364611
Semi-major axis (a)2.1003850844 AU
Inclination (i)1.97940465°
Long. of Asc. Node (Ω)349.74937780° ± 5.00e+00
Arg. of Perihelion (ω)86.05718676° ± 6.00e+00
Mean Anomaly (M)356.48052527°
Mean Motion (n)0.3237842700°/day
Perihelion dist (q)0.77769590 AU
Aphelion dist (Q)3.42307390 AU
Orbital Period3.04402580 yr
Physical Parameters
H (abs. magnitude)27.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.251″
Uncertainty—
Orbit TypeApollo
MOID0.012330 AU
Observations Used16
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2022-10-03
Observations (16)
Date Type RA Dec Mag Band Observatory
2022-09-24 08:50:01 C 23 40 19.338 +02 41 52.43 – V F51
2022-09-24 09:07:01 C 23 40 17.908 +02 42 22.77 – V F51
2022-09-28 08:17:45 C 23 31 24.938 +07 22 31.52 – U F51
2022-09-28 08:34:50 C 23 31 21.648 +07 23 53.53 – U F51
2022-09-28 08:52:15 C 23 31 18.243 +07 25 17.31 – U F51
2022-09-28 09:09:56 C 23 31 14.767 +07 26 42.91 – U F51
2022-09-28 12:06:30 C 23 30 39.831 +07 41 07.25 – V F52
2022-09-28 12:07:24 C 23 30 39.639 +07 41 12.10 – V F52
2022-09-28 21:20:17 C 23 29 14.64 +08 29 11.3 – X 033
2022-09-28 21:22:47 C 23 29 14.13 +08 29 25.6 – X 033
2022-09-28 21:25:17 C 23 29 13.60 +08 29 39.5 – X 033
2022-09-29 00:38:54 C 23 28 43.86 +08 52 13.3 – V 807
2022-09-29 00:52:12 C 23 28 40.91 +08 53 34.2 – V 807
2022-09-29 01:05:32 C 23 28 37.96 +08 54 55.2 – V 807
2022-10-03 01:28:02 C 22 24 40.20 +36 46 52.3 – V 204
2022-10-03 01:50:49 C 22 23 47.14 +37 03 38.8 – V 204