Asteroid General Data

2017 SK₂₁

General information

Preliminary designation	2017 SK₂₁
Group	Apollo
Absolute magnitude	22.32
Approximate diameter (m)	91
Approximate mass (kg)	1.39·10⁹
Number of observations	20
Arc length (days)	8

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	320.455225
a – orbit major semiaxis (astronomical units)	1.02552400
e – orbit eccentricity	0.50765400
ω – orbit ascending node-perihelion angle (degrees)	229.486124
Ω – longitude of orbit ascending node (degrees)	354.487373
i – orbit inclination to the ecliptic plane (degrees)	36.846986

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	200.481271	1.02554667	0.50538421	229.047526	355.239243	36.980535	0.50725157	1.038565
01/21/1858	180.092781	1.02553555	0.50570451	229.115135	355.130165	36.962898	0.50691760	1.038548
01/29/1887	159.762061	1.02552440	0.50604265	229.177191	355.021139	36.944727	0.50656531	1.038531
02/07/1916	139.534892	1.02552625	0.50636468	229.234150	354.915434	36.926531	0.50623598	1.038534
02/14/1945	119.714578	1.02546166	0.50670374	229.300147	354.799496	36.905569	0.50585640	1.038436
02/22/1974	99.713090	1.02546665	0.50699916	229.360737	354.692293	36.886162	0.50555592	1.038444
03/02/2003	79.249257	1.02552690	0.50738203	229.432199	354.575959	36.862619	0.50519298	1.038535
03/09/2032	58.522390	1.02554661	0.50771370	229.503144	354.470824	36.843431	0.50486255	1.038565
03/17/2061	37.384645	1.02565902	0.50812260	229.574744	354.355752	36.818243	0.50449849	1.038736
03/25/2090	15.737893	1.02566846	0.50851614	229.629389	354.251708	36.800166	0.50409949	1.038750
04/03/2119	354.329293	1.02567757	0.50891986	229.685351	354.138998	36.777990	0.50368988	1.038764
04/10/2148	333.128191	1.02569531	0.50926720	229.733925	354.031906	36.758808	0.50334233	1.038791
04/18/2177	312.386619	1.02556776	0.50961014	229.787160	353.924611	36.741274	0.50292804	1.038597

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