Astronomy: General

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Proteus

A Dictionary of Astronomy | 1997 | Copyright

Proteus The second-largest satellite of Neptune, 436 × 416 × 402 km in size; also known as Neptune VIII. Proteus was discovered in 1989 on images from the Voyager 2 spacecraft, and orbits the planet in 1.122 days at a distance of 117 647 km. It has a rough surface covered with impact craters, including one over 200 km in diameter, named Pharos.

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Proteus

A Dictionary of Earth Sciences | 1999 | | Copyright

Proteus (Neptune VIII) A satellite of Neptune, measuring 436 × 416 × 402 km; visual albedo 0.06.

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AILSA ALLABY and MICHAEL ALLABY. "Proteus." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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

AILSA ALLABY and MICHAEL ALLABY. "Proteus." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Proteus.html

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Proteus

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

Proteus , in astronomy, one of the natural satellites, or moons, of Neptune .

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