90 Antiope: rotation images
Ast06
The large, double asteroid of Antiope. Each asteroid in the pair is the size of a large city, separated by about 160 km, mutually orbiting the vacant point of interplanetary space that lies midway between them.

The asteroid pair was once assumed to be a single body, called Antiope, orbiting the sun in the outer parts of the asteroid belt between the orbits of Mars and Jupiter.
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Image Credit: Southwest Research Institute