Asteroid General Data

2021 SA

General information

Preliminary designation	2021 SA
Group	Apollo
Absolute magnitude	26.41
Approximate diameter (m)	14
Approximate mass (kg)	4.90·10⁶
Number of observations	46
Arc length (days)	28

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	169.846624
a – orbit major semiaxis (astronomical units)	2.27953000
e – orbit eccentricity	0.58016800
ω – orbit ascending node-perihelion angle (degrees)	148.947377
Ω – longitude of orbit ascending node (degrees)	174.997966
i – orbit inclination to the ecliptic plane (degrees)	1.657532

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	68.754542	2.31483470	0.58400132	136.773784	185.998667	1.296718	0.96296818	3.521929
01/21/1858	157.729460	2.31042987	0.58668024	138.636612	184.484423	1.332769	0.95494633	3.511881
01/29/1887	252.722672	2.30737854	0.58596188	141.554014	181.746171	1.381632	0.95534267	3.504926
02/07/1916	346.784550	2.31081556	0.58676587	143.286230	180.371640	1.423746	0.95490787	3.512760
02/14/1945	76.512130	2.31014420	0.58790432	144.925275	179.050446	1.465872	0.95200045	3.511230
02/22/1974	166.653805	2.31104795	0.58771568	146.247489	177.994460	1.501740	0.95280884	3.513290
03/02/2003	261.147005	2.30698699	0.58637753	148.560399	175.964852	1.555908	0.95422165	3.504034
03/09/2032	24.033256	2.27453641	0.58168588	149.260826	174.818876	1.671570	0.95147070	3.430362
03/17/2061	187.021819	2.27415179	0.58221559	150.502066	173.891130	1.709559	0.95010518	3.429492
03/25/2090	351.143684	2.27369920	0.58076852	151.598408	173.047321	1.745908	0.95320628	3.428468
04/03/2119	154.084045	2.27411642	0.58046261	153.174870	171.662126	1.790998	0.95407686	3.429412
04/10/2148	241.518550	2.32074225	0.58920504	155.173059	170.696259	1.711680	0.95334922	3.535420
04/18/2177	313.603630	2.32002718	0.58901367	156.455925	169.801854	1.753982	0.95349946	3.533786

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