Ananke (/əˈnæŋkiː/ ə-NANG-kee; Greek: Ανάγκη) is a retrograde irregular moon of Jupiter. It was discovered by Seth Barnes Nicholson at Mount Wilson Observatory in 1951 and is named after the mythological Ananke the personification of Necessity and the mother of the Moirai by Zeus. The adjectival form of the name is Anankean.Ananke did not receive its present name until 1975; before then it was simply known as Jupiter XII.
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