Asteroid General Data

2021 SM

General information

Preliminary designation	2021 SM
Group	Apollo
Absolute magnitude	22.25
Approximate diameter (m)	94
Approximate mass (kg)	1.53·10⁹
Number of observations	43
Arc length (days)	40

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	330.498930
a – orbit major semiaxis (astronomical units)	1.93180500
e – orbit eccentricity	0.68031800
ω – orbit ascending node-perihelion angle (degrees)	307.509940
Ω – longitude of orbit ascending node (degrees)	318.004376
i – orbit inclination to the ecliptic plane (degrees)	3.109277

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	207.850623	1.91927086	0.67878550	298.099596	326.398856	2.976893	0.61649763	2.658918
01/21/1858	177.686539	1.91836128	0.67855247	299.470577	325.128783	2.995380	0.61665250	2.657028
01/29/1887	147.807849	1.91800413	0.67850977	300.817553	323.922717	3.007851	0.61661959	2.656287
02/07/1916	116.215831	1.91967126	0.67886246	302.013529	322.887668	3.013174	0.61647850	2.659751
02/14/1945	85.101698	1.91852872	0.67794669	303.383275	321.603128	3.032537	0.61786853	2.657376
02/22/1974	57.527734	1.91877784	0.67897084	304.571676	320.562311	3.047946	0.61598363	2.657894
03/02/2003	26.864546	1.91840564	0.67835273	306.595369	318.838028	3.083135	0.61704993	2.657121
03/09/2032	359.041337	1.91853285	0.67804975	307.581477	317.971871	3.103530	0.61767212	2.657385
03/17/2061	327.799613	1.91843009	0.67924509	308.874539	316.807108	3.131103	0.61534587	2.657171
03/25/2090	297.102869	1.91825937	0.67932202	309.929772	315.835440	3.154800	0.61514354	2.656817
04/03/2119	266.274550	1.91804281	0.67993720	311.136099	314.770038	3.178906	0.61389416	2.656367
04/10/2148	231.365796	1.91961419	0.67959917	312.495643	313.538062	3.182435	0.61504598	2.659632
04/18/2177	198.382666	1.91851437	0.67934509	313.624095	312.548097	3.211409	0.61518105	2.657347

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