Astronomy Answers: From the Astronomical Dictionary

Astronomy Answers
From the Astronomical Dictionary


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The description of the word you requested from the astronomical dictionary is given below.

Deimos

A moon of 12 km diameter at about 23,460 km from the planet Mars. The gravity at its surface is about 0.0003 times as strong as on Earth. The moon goes once around its planet in about 30.3 hours. The moon was discovered in 1877. Also called MII (Mars two).