Pallas

views updated May 08 2018

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.

A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY

Pallas

views updated May 21 2018

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

The Oxford Dictionary of Phrase and Fable ELIZABETH KNOWLES

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Pallas

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