243 Ida

Auteur(s) : Jestr

Date de sortie :

243 Ida is an S-type asteroid, from the Koronis family of the asteroid belt. It was discovered on 1884-Sept-29 by Austrian astronomer Johann Palisa at Vienna Observatory. Its dimensions are 56 x 24 x 21 km. In 1993-Aug-28, the Galileo spacecraft, on its way to Jupiter, performed a flyby of Ida, with a closest approach of 2,390 km. The images revealed Dactyl, the first natural satellite of an asteroid discovered, which measures 1.6 km in diameter.

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