Asteroid General Data

2021 SW₂

General information

Preliminary designation	2021 SW₂
Group	Apollo
Absolute magnitude	25.65
Approximate diameter (m)	20
Approximate mass (kg)	1.40·10⁷
Number of observations	29
Arc length (days)	4

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	281.105510
a – orbit major semiaxis (astronomical units)	2.02023900
e – orbit eccentricity	0.71663100
ω – orbit ascending node-perihelion angle (degrees)	97.025407
Ω – longitude of orbit ascending node (degrees)	173.152336
i – orbit inclination to the ecliptic plane (degrees)	2.182006

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	16.232423	2.02376364	0.71894646	83.709653	185.179578	2.170002	0.56878594	2.878991
01/21/1858	35.892426	2.02912721	0.71498987	86.121829	183.061237	2.169125	0.57832180	2.890444
01/29/1887	62.429553	2.01861470	0.71922342	89.183274	180.433500	2.183842	0.56677973	2.868011
02/07/1916	109.882896	2.01711911	0.71990373	89.795506	179.779458	2.192013	0.56498754	2.864824
02/14/1945	144.082305	2.02441594	0.71526682	92.406254	177.440273	2.206035	0.57641840	2.880383
02/22/1974	170.895895	2.02219121	0.71874889	94.772321	175.413126	2.215565	0.56874353	2.875636
03/02/2003	210.563216	2.02011653	0.72088774	95.556561	174.641569	2.220715	0.56383929	2.871212
03/09/2032	249.711024	2.01558816	0.71658405	97.185204	173.080384	2.177945	0.57124983	2.861563
03/17/2061	297.298191	2.01323498	0.71969651	100.178842	170.493001	2.197132	0.56431679	2.856553
03/25/2090	358.592425	2.01145764	0.71997796	100.720827	169.884443	2.205408	0.56325247	2.852771
04/03/2119	49.971147	2.02003813	0.71642587	102.353845	168.401711	2.224566	0.57283055	2.871045
04/10/2148	98.821736	2.01112220	0.72006710	104.947913	166.165669	2.253409	0.56297928	2.852058
04/18/2177	169.625834	2.00840199	0.71927244	105.649153	165.516122	2.256552	0.56381379	2.846273

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