Astronomy Answers: From the Astronomical Dictionary

Astronomy Answers
From the Astronomical Dictionary


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Ananke

A moon of 28 km diameter at about 21,276,000 km from the planet Jupiter. The gravity at its surface is about 0.0010 times as strong as on Earth. The moon goes once around its planet in about 633.9 days. The moon was discovered in 1951. Also called JXII (Jupiter twelve).