Asteroid General Data

2021 SM₁

General information

Preliminary designation	2021 SM₁
Group	Apollo
Absolute magnitude	25.55
Approximate diameter (m)	21
Approximate mass (kg)	1.61·10⁷
Number of observations	109
Arc length (days)	129

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	302.403103
a – orbit major semiaxis (astronomical units)	1.42374800
e – orbit eccentricity	0.34391800
ω – orbit ascending node-perihelion angle (degrees)	219.671340
Ω – longitude of orbit ascending node (degrees)	206.023294
i – orbit inclination to the ecliptic plane (degrees)	2.154862

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	45.249869	1.42825568	0.34577084	215.812361	209.300904	2.154000	0.93440652	1.706906
01/21/1858	41.735335	1.42846055	0.34563260	216.223078	208.888149	2.151873	0.93473802	1.707273
01/29/1887	37.818060	1.42982960	0.34610971	216.624341	208.444373	2.152081	0.93495169	1.709728
02/07/1916	32.109203	1.42917823	0.34581419	217.019357	208.212456	2.155659	0.93494812	1.708560
02/14/1945	28.278246	1.42827787	0.34547358	217.501536	207.727325	2.151624	0.93484559	1.706946
02/22/1974	24.230114	1.43018126	0.34607326	217.898837	207.316512	2.147120	0.93523377	1.710359
03/02/2003	17.064184	1.42952088	0.34588208	218.247338	207.114013	2.150185	0.93507522	1.709174
03/09/2032	23.032828	1.42363110	0.34395079	219.778401	205.977224	2.156431	0.93397206	1.698622
03/17/2061	56.982253	1.42402820	0.34410943	220.317762	205.607589	2.159377	0.93400667	1.699333
03/25/2090	80.170971	1.42536754	0.34467841	221.110449	204.968080	2.164497	0.93407413	1.701731
04/03/2119	98.518791	1.42525976	0.34438250	221.509380	204.733153	2.169336	0.93442525	1.701538
04/10/2148	141.521675	1.42790669	0.34516344	221.622766	204.326187	2.148415	0.93504550	1.706280
04/18/2177	143.339570	1.42906383	0.34546532	221.946500	203.948494	2.143935	0.93537183	1.708355

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