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sidereal month |
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sidereal month [sī′dir·ē·əl ′mənth] (astronomy) The time period of one revolution of the moon about the earth relative to the stars; this period varies because of perturbations, but it is a little less than 27⅓ days. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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