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Many asteroids are now known to have moons orbiting them.
Dactyl, the small moon of Ida and the first asteroid satellite
discovered, was spotted in images taken by the Galileo spacecraft in
August 1993. Asteroid satellites come with a wide range of physical
and orbital parameters. Some asteroids have tiny moons, while others
have satellites of almost the same size as the primary. Even a triple
system is now known!
For a complete list of asteroids and their moons click here.
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