Asteroid General Data

2021 SP

General information

Preliminary designation	2021 SP
Group	Apollo
Absolute magnitude	29.19
Approximate diameter (m)	4
Approximate mass (kg)	1.05·10⁵
Number of observations	10
Arc length (days)	2

Approaches

Date	Object	r, AU	r, km
09/17/2021 11:45:36 AM	Earth	0.000093	13 951

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	276.025721
a – orbit major semiaxis (astronomical units)	1.45586483
e – orbit eccentricity	0.46333089
ω – orbit ascending node-perihelion angle (degrees)	252.683883
Ω – longitude of orbit ascending node (degrees)	174.523654
i – orbit inclination to the ecliptic plane (degrees)	4.793384

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	111.009361	1.15027923	0.42166148	98.388649	354.985246	0.197759	0.66525079	1.233689
01/21/1858	298.100879	1.14972829	0.42165083	98.429992	354.903200	0.195297	0.66494440	1.232802
01/29/1887	139.241640	1.14805413	0.42085009	98.927798	354.351783	0.191174	0.66489545	1.230111
02/07/1916	3.193391	1.14661982	0.42018042	99.060091	354.166671	0.186819	0.66483262	1.227806
02/14/1945	226.277634	1.14905127	0.42044098	99.138923	353.857235	0.184529	0.66594303	1.231714
02/22/1974	67.529246	1.14931548	0.42047841	99.267248	353.649320	0.182182	0.66605314	1.232138
03/02/2003	281.311550	1.14749328	0.42019437	99.547362	353.175686	0.178702	0.66532307	1.229209
03/09/2032	318.052449	1.45601943	0.46346043	252.768783	174.449993	4.792302	0.78121204	1.756917
03/17/2061	147.396627	1.45586271	0.46338686	253.150137	174.101291	4.803292	0.78123506	1.756634
03/25/2090	334.392231	1.45455303	0.46343699	253.580453	173.844828	4.804591	0.78045936	1.754264
04/03/2119	161.368774	1.45667529	0.46378986	253.936846	173.464350	4.799515	0.78108407	1.758105
04/10/2148	336.736590	1.45975166	0.46456363	254.239049	173.151591	4.800942	0.78160413	1.763677
04/18/2177	143.206774	1.45902236	0.46413656	254.719049	172.769759	4.808585	0.78183675	1.762356

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