Stardust Image of Asteroid Annefrank PIA02885
Ast01 Asteroid Annefrank is seen as irregularly shaped, cratered body in an image taken by NASA's Stardust spacecraft during a flyby of the asteroid.
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Image Credit: JPL, NASA  

Stardust flew within about 3,300 km of the asteroid as a rehearsal for the spacecraft's encounter with its primary target, comet Wild 2, in January 2004. The camera's resolution was sufficient to show that Annefrank is about 8 km in length, twice the predicted size from Earth-based observations. The surface reflects about 0.1 to 0.2 % of sunlight, slightly less than anticipated. A few craters that are hundreds of meters across can be seen. The straight edge in the right side of the image may be an artifact of processing.  
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