Asteroid General Data

2017 SP₂₁

General information

Preliminary designation	2017 SP₂₁
Group	Aten
Absolute magnitude	27.69
Approximate diameter (m)	8
Approximate mass (kg)	8.35·10⁵
Number of observations	31
Arc length (days)	2

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	176.675131
a – orbit major semiaxis (astronomical units)	0.98036500
e – orbit eccentricity	0.13881200
ω – orbit ascending node-perihelion angle (degrees)	69.318891
Ω – longitude of orbit ascending node (degrees)	188.125046
i – orbit inclination to the ecliptic plane (degrees)	11.204494

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	69.546634	0.97642870	0.14500346	66.447983	190.115033	10.925241	0.83484316	0.964854
01/21/1858	90.974597	0.97694738	0.14461777	66.932941	189.851549	10.935087	0.83566342	0.965622
01/29/1887	109.072428	0.97709123	0.14444291	67.161851	189.603677	10.946382	0.83595734	0.965836
02/07/1916	129.262014	0.97679341	0.14453779	67.210730	189.338584	10.958092	0.83560985	0.965394
02/14/1945	155.729749	0.97630983	0.14431371	67.338035	189.073860	10.970996	0.83541493	0.964677
02/22/1974	147.422596	0.97895770	0.14256448	68.518938	188.771074	11.036512	0.83939311	0.968605
03/02/2003	97.118046	0.98187257	0.14085330	69.744421	188.438425	11.090724	0.84357258	0.972934
03/09/2032	47.105911	0.98050923	0.13884336	69.381964	188.101316	11.203896	0.84437203	0.970908
03/17/2061	5.932740	0.98069970	0.13877150	69.492495	187.824170	11.214122	0.84460653	0.971191
03/25/2090	319.417185	0.98148964	0.13849580	69.790217	187.536755	11.224947	0.84555745	0.972365
04/03/2119	263.889803	0.98154464	0.13842741	70.047846	187.418243	11.227173	0.84567195	0.972446
04/10/2148	209.887421	0.98120726	0.13837618	70.027702	187.134915	11.237173	0.84543155	0.971945
04/18/2177	156.973344	0.98130813	0.13838384	70.081985	186.854022	11.245607	0.84551094	0.972095

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