Asteroid General Data

2012 ST₉

General information

Preliminary designation	2012 ST₉
Group	Apollo
Absolute magnitude	19.83
Approximate diameter (m)	290
Approximate mass (kg)	4.34·10¹⁰
Number of observations	201
Arc length (days)	8285

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	355.318996
a – orbit major semiaxis (astronomical units)	1.96002000
e – orbit eccentricity	0.66285500
ω – orbit ascending node-perihelion angle (degrees)	308.402413
Ω – longitude of orbit ascending node (degrees)	174.236630
i – orbit inclination to the ecliptic plane (degrees)	7.693366

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	21.853063	1.96566904	0.66276968	301.030324	180.769174	7.236029	0.66288321	2.755917
01/21/1858	217.857927	1.96384922	0.66214239	302.275515	179.652651	7.310963	0.66350141	2.752091
01/29/1887	57.024290	1.96206322	0.66308528	303.081789	178.878817	7.337869	0.66104797	2.748338
02/07/1916	258.025438	1.96086633	0.66304255	304.403914	177.710262	7.406844	0.66072852	2.745823
02/14/1945	99.635497	1.96034558	0.66265520	305.608309	176.702137	7.487275	0.66131238	2.744730
02/22/1974	303.193911	1.96086530	0.66200957	306.859630	175.621444	7.578488	0.66275370	2.745821
03/02/2003	148.923202	1.96213143	0.66146487	307.417577	175.068402	7.618602	0.66425041	2.748481
03/09/2032	353.594046	1.96010837	0.66303893	308.423513	174.191733	7.695940	0.66048021	2.744231
03/17/2061	195.757997	1.96051746	0.66257140	309.723951	173.094023	7.787166	0.66153465	2.745091
03/25/2090	38.864997	1.96147696	0.66057727	310.708479	172.316542	7.860899	0.66576987	2.747106
04/03/2119	242.784881	1.96205376	0.66046159	311.837429	171.350633	7.949284	0.66619260	2.748318
04/10/2148	88.294473	1.96055561	0.66116424	312.425467	170.792719	7.997184	0.66430635	2.745171
04/18/2177	294.382951	1.95985299	0.66072777	313.487671	169.890852	8.097456	0.66492369	2.743695

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