Asteroid General Data

2001 SK₉ (285990)

General information

Preliminary designation	2001 SK₉
Number	285990
Group	Apollo
Absolute magnitude	17.96
Approximate diameter (m)	680
Approximate mass (kg)	5.75·10¹¹
Number of observations	493
Arc length (days)	8820

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	213.905061
a – orbit major semiaxis (astronomical units)	1.78533800
e – orbit eccentricity	0.78944100
ω – orbit ascending node-perihelion angle (degrees)	34.817100
Ω – longitude of orbit ascending node (degrees)	195.522702
i – orbit inclination to the ecliptic plane (degrees)	25.841453

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	7.111008	1.79070798	0.77870834	31.821839	198.225090	27.116062	0.39626874	2.396281
01/21/1858	43.431242	1.79181592	0.77845502	32.167571	197.884129	26.932810	0.39696782	2.398505
01/29/1887	76.382750	1.79270791	0.77847161	32.480395	197.563692	26.774655	0.39713569	2.400297
02/07/1916	111.701890	1.79170308	0.77990673	32.703097	197.332819	26.695587	0.39434178	2.398279
02/14/1945	154.617356	1.78850802	0.78314232	33.057257	197.018706	26.576264	0.38785170	2.391867
02/22/1974	205.563554	1.78667298	0.78550894	33.488701	196.661229	26.413017	0.38322538	2.388186
03/02/2003	261.772263	1.78524103	0.78835130	34.219141	196.043116	26.106204	0.37784395	2.385316
03/09/2032	320.033080	1.78563892	0.78954482	34.867068	195.487421	25.826286	0.37579697	2.386113
03/17/2061	15.101614	1.78745682	0.78975401	35.798955	194.665575	25.398480	0.37580563	2.389758
03/25/2090	63.843422	1.78917388	0.78945974	36.397069	194.113867	25.124303	0.37669313	2.393202
04/03/2119	103.778035	1.79166766	0.78869529	36.947931	193.596021	24.875033	0.37858782	2.398208
04/10/2148	137.458126	1.79288156	0.78802294	37.412477	193.107267	24.666398	0.38004976	2.400645
04/18/2177	170.988875	1.79205469	0.78893426	37.683397	192.802375	24.565572	0.37824134	2.398985

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