Asteroid General Data

2017 SM₂₁

General information

Preliminary designation	2017 SM₂₁
Group	Apollo
Absolute magnitude	26.31
Approximate diameter (m)	15
Approximate mass (kg)	5.62·10⁶
Number of observations	19
Arc length (days)	5

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	195.064952
a – orbit major semiaxis (astronomical units)	1.57976900
e – orbit eccentricity	0.37489500
ω – orbit ascending node-perihelion angle (degrees)	334.610566
Ω – longitude of orbit ascending node (degrees)	2.213876
i – orbit inclination to the ecliptic plane (degrees)	13.791769

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	283.957681	1.57685733	0.37452146	332.292818	3.514787	13.689872	0.98629042	1.980110
01/21/1858	159.478617	1.57698961	0.37460806	332.559613	3.366164	13.695297	0.98623659	1.980359
01/29/1887	34.726981	1.57683888	0.37445265	332.874579	3.208564	13.702907	0.98638739	1.980075
02/07/1916	266.853257	1.57823258	0.37471662	333.249504	2.965135	13.715749	0.98684260	1.982701
02/14/1945	139.793246	1.57751938	0.37459697	333.512648	2.785003	13.724133	0.98658540	1.981357
02/22/1974	11.821721	1.57756990	0.37449965	333.783005	2.638095	13.727959	0.98677053	1.981452
03/02/2003	244.722857	1.57727125	0.37447578	334.054055	2.477683	13.735390	0.98662137	1.980889
03/09/2032	108.736319	1.57916690	0.37449121	334.629132	2.193277	13.757151	0.98778278	1.984461
03/17/2061	334.659783	1.57904129	0.37440765	334.845517	2.046171	13.761720	0.98783615	1.984225
03/25/2090	199.147321	1.57908009	0.37448433	335.173650	1.887404	13.769900	0.98773934	1.984298
04/03/2119	64.202006	1.57888610	0.37427100	335.436683	1.744030	13.773950	0.98795482	1.983932
04/10/2148	286.947228	1.58425961	0.37601692	335.872412	1.541478	13.764210	0.98855119	1.994069
04/18/2177	158.757046	1.57724931	0.37333138	336.218463	1.304137	13.833097	0.98841264	1.980848

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