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NASA Radar Reveals Asteroid Has Its Own Moon

May 30, 2013

Radar data of asteroid 1998 QE2 obtained on May 29, 2013, when the asteroid was about 3.75 million miles (6 million kilometers) from Earth. 1998 QE2 measures approximately 1.7 miles (2.7 kilometers) in diameter.

About 16 percent of asteroids are binary or triple systems.

The data is looped one time.

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