Asteroid General Data

2021 SG

General information

Preliminary designation	2021 SG
Group	Apollo
Absolute magnitude	24.01
Approximate diameter (m)	42
Approximate mass (kg)	1.35·10⁸
Number of observations	129
Arc length (days)	7

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	103.948702
a – orbit major semiaxis (astronomical units)	1.71276300
e – orbit eccentricity	0.72326900
ω – orbit ascending node-perihelion angle (degrees)	257.185938
Ω – longitude of orbit ascending node (degrees)	351.670392
i – orbit inclination to the ecliptic plane (degrees)	3.168318

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	45.927714	1.71311542	0.72313093	248.029882	0.115063	3.631151	0.47430868	2.242232
01/21/1858	32.428738	1.71137007	0.72362411	248.886183	359.293096	3.603922	0.47298143	2.238806
01/29/1887	11.809025	1.71289454	0.72394736	250.435591	357.901416	3.572877	0.47284906	2.241798
02/07/1916	349.626474	1.71308523	0.72298703	251.786004	356.660843	3.550855	0.47454683	2.242173
02/14/1945	327.913634	1.71493934	0.72314366	253.210657	355.375191	3.523236	0.47479184	2.245814
02/22/1974	304.542511	1.71330617	0.72384260	254.439876	354.221419	3.514266	0.47314218	2.242607
03/02/2003	282.488103	1.71253534	0.72391919	255.985591	352.808313	3.478512	0.47279814	2.241093
03/09/2032	263.110376	1.71293778	0.72341864	257.276136	351.580048	3.167119	0.47376666	2.241883
03/17/2061	243.999041	1.71325197	0.72362320	258.767475	350.205912	3.149257	0.47350309	2.242500
03/25/2090	222.864966	1.71346910	0.72457353	260.136076	348.948088	3.134360	0.47193474	2.242926
04/03/2119	201.502424	1.71356446	0.72422428	261.612397	347.537980	3.115065	0.47255948	2.243114
04/10/2148	183.060449	1.71330096	0.72374762	262.863373	346.400522	3.096308	0.47330347	2.242596
04/18/2177	159.465889	1.71334935	0.72469740	264.150890	345.201755	3.076185	0.47168954	2.242691

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