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Ananke

A Dictionary of Astronomy | 1997 | Copyright

Ananke A retrograde satellite of Jupiter, 21 276 000 km from the planet; also known as Jupiter XII. Ananke orbits Jupiter in 629.8 days at an inclination of almost 149° to Jupiter's equator. It is 20 km in diameter, and was discovered in 1951 by the American astronomer Seth Barnes Nicholson (1891–1963). Ananke is the largest member of the so‐called Ananke retrograde irregular group of Jovian satellites which all have similar orbital eccentricity, inclination, and semimajor axis: Euporie, Orthosie, Euanthe, Thyone, Mneme, Harpalyke, Hermippe, Praxidike, Thelxinoe, and Iocaste.

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Ananke

A Dictionary of Earth Sciences | 1999 | | Copyright

Ananke (Jupiter XII) One of the lesser satellites of Jupiter, with a diameter of 20 km; its orbit is retrograde.

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AILSA ALLABY and MICHAEL ALLABY. "Ananke." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 25 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Ananke." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 25, 2012). http://www.encyclopedia.com/doc/1O13-Ananke.html

AILSA ALLABY and MICHAEL ALLABY. "Ananke." A Dictionary of Earth Sciences. 1999. Retrieved May 25, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Ananke.html

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Ananke

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Ananke , in astronomy, one of the 39 known moons, or natural satellites, of Jupiter .

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"Ananke." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 25, 2012). http://www.encyclopedia.com/doc/1E1-Ananke-ast.html

"Ananke." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 25, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Ananke-ast.html

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