Asteroid General Data

2021 SM₂

General information

Preliminary designation	2021 SM₂
Group	Apollo
Absolute magnitude	20.67
Approximate diameter (m)	200
Approximate mass (kg)	1.36·10¹⁰
Number of observations	57
Arc length (days)	3634

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	93.515374
a – orbit major semiaxis (astronomical units)	1.58063300
e – orbit eccentricity	0.39307900
ω – orbit ascending node-perihelion angle (degrees)	283.675250
Ω – longitude of orbit ascending node (degrees)	208.417756
i – orbit inclination to the ecliptic plane (degrees)	20.084941

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	289.208953	1.58069882	0.39351910	281.747854	210.143960	20.000922	0.95866363	1.987350
01/21/1858	147.076215	1.58039555	0.39325516	282.035819	209.881953	20.015184	0.95889684	1.986778
01/29/1887	1.504904	1.58196008	0.39352800	282.361367	209.618255	20.028390	0.95941449	1.989729
02/07/1916	217.666790	1.58045589	0.39316459	282.634281	209.338375	20.038557	0.95907659	1.986892
02/14/1945	74.824977	1.58078258	0.39325202	282.882660	209.111525	20.049496	0.95913664	1.987508
02/22/1974	290.502891	1.58079502	0.39331879	283.232940	208.840605	20.061938	0.95903863	1.987531
03/02/2003	147.510756	1.58054879	0.39305239	283.465257	208.615869	20.073516	0.95931032	1.987067
03/09/2032	5.392587	1.58090491	0.39321290	283.680138	208.390648	20.084863	0.95927270	1.987738
03/17/2061	218.402748	1.58059462	0.39285653	284.119713	208.055175	20.106408	0.95964770	1.987153
03/25/2090	76.217347	1.58078186	0.39260499	284.363999	207.832670	20.116058	0.96015901	1.987506
04/03/2119	292.277257	1.58102078	0.39256130	284.672702	207.563417	20.134417	0.96037322	1.987957
04/10/2148	147.700324	1.58071076	0.39232132	284.962920	207.338595	20.149245	0.96056423	1.987372
04/18/2177	4.863094	1.58061793	0.39181915	285.263983	207.079306	20.167142	0.96130155	1.987197

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