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Bruce Murray Space Image Library

Asteroid 243 Ida

Asteroid 243 Ida
Asteroid 243 Ida On its way to the Jupiter system, Galileo passed by asteroid 243 Ida, discovering that it had a satellite, now named Dactyl. This is a mosaic of 5 images captured on August 28, 1993, shortly before closest approach. Ida is an S-type asteroid, about 58 by 23 kilometers in size. NASA / JPL / Ted Stryk