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perihelion

perihelion , point nearest the sun in the orbit of a body about the sun. See apsis .

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"perihelion." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.

"perihelion." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (July 9, 2009). http://www.encyclopedia.com/doc/1E1-periheli.html

"perihelion." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved July 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-periheli.html

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