Moon of
Mars
Deimos is the smaller and outer of the two natural satellites of Mars, the other being Phobos. Deimos has a mean radius of 6.2 km and takes 30.3 hours to orbit Mars. Deimos is 23,460 km from Mars, much farther than Mars's other moon, Phobos.
Fun Facts
Diameter: 15 km
Discovered in 1877 by A. Hall
In the News
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