Pallas

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Pallas

Pallas , in astronomy, 2d asteroid to be discovered. It was found in 1802 by H. Olbers. The second largest asteroid, it has a diameter of c.300 mi (480 km). Its orbit has a semimajor axis of 2.78 astronomical units and a period of 1,684 days.

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"Pallas." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.

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Pallas

The Oxford Dictionary of Phrase and Fable | 2006 | | Â© The Oxford Dictionary of Phrase and Fable 2006, originally published by Oxford University Press 2006. (Hide copyright information) Copyright

Pallas in Greek mythology, one of the names (of unknown meaning) of Athene.

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ELIZABETH KNOWLES. "Pallas." The Oxford Dictionary of Phrase and Fable. Oxford University Press. 2006. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.

ELIZABETH KNOWLES. "Pallas." The Oxford Dictionary of Phrase and Fable. Oxford University Press. 2006. Encyclopedia.com. (December 23, 2009). http://www.encyclopedia.com/doc/1O214-Pallas.html

ELIZABETH KNOWLES. "Pallas." The Oxford Dictionary of Phrase and Fable. Oxford University Press. 2006. Retrieved December 23, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O214-Pallas.html

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A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

Pallas The second largest (after Ceres) solar system asteroid (No. 2), diameter 538 km; approximate mass 25 × 10¹⁹ kg; rotation period 7.811 hours; orbital period 4.61 years. It was discovered in 1802 by H. Olbers.

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AILSA ALLABY and MICHAEL ALLABY. "Pallas." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Pallas." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (December 23, 2009). http://www.encyclopedia.com/doc/1O13-Pallas.html

AILSA ALLABY and MICHAEL ALLABY. "Pallas." A Dictionary of Earth Sciences. 1999. Retrieved December 23, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Pallas.html

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