Ida and Moon |
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This color mosaic shows the asteroid Ida and its newly-discovered moon, Dactyl. The images were taken by the camera system on the Galileo spacecraft, about 14 minutes before its closest approach to the asteroid on August 28, 1993. Ida appears to be about 52 km (32 mi) in length and is irregularly shaped. This view shows numerous craters, including many degraded craters, indicating Ida's surface is older than previously thought.
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