Asteroid General Data

2004 ST₉ (405427)

General information

Preliminary designation	2004 ST₉
Number	405427
Group	Amor
Absolute magnitude	18.09
Approximate diameter (m)	640
Approximate mass (kg)	4.81·10¹¹
Number of observations	472
Arc length (days)	7383

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	263.549155
a – orbit major semiaxis (astronomical units)	2.24809000
e – orbit eccentricity	0.43640700
ω – orbit ascending node-perihelion angle (degrees)	60.165347
Ω – longitude of orbit ascending node (degrees)	194.878340
i – orbit inclination to the ecliptic plane (degrees)	12.220855

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	32.407827	2.24666785	0.43294721	54.356530	198.970914	12.534665	1.27397927	3.367510
01/21/1858	254.241059	2.24600701	0.43385182	55.043035	198.444328	12.503097	1.27157278	3.366025
01/29/1887	114.686771	2.24798787	0.43288153	55.749655	197.879062	12.462086	1.27487544	3.370478
02/07/1916	333.012002	2.24892507	0.43223986	56.604740	197.295265	12.413811	1.27685002	3.372586
02/14/1945	189.348376	2.24814796	0.43395635	58.156038	196.415009	12.327537	1.27254987	3.370839
02/22/1974	47.304120	2.24787744	0.43537265	58.941267	195.894603	12.289622	1.26921309	3.370230
03/02/2003	267.223285	2.24869873	0.43540782	59.562245	195.327199	12.249887	1.26959772	3.372077
03/09/2032	128.560094	2.24728499	0.43658899	60.257986	194.830417	12.224562	1.26614510	3.368898
03/17/2061	351.522874	2.24472604	0.43976690	61.029560	194.266717	12.193457	1.25756981	3.363145
03/25/2090	216.244874	2.24514442	0.43967572	61.473606	193.813175	12.175219	1.25800894	3.364086
04/03/2119	79.915391	2.24619665	0.43858492	62.069759	193.302778	12.152634	1.26104867	3.366451
04/10/2148	300.018787	2.24795456	0.43724047	63.514859	192.341181	12.090534	1.26505785	3.370404
04/18/2177	158.683475	2.24765613	0.43760329	64.363329	191.715095	12.057395	1.26407441	3.369732

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