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circle of perpetual apparition |
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circle of perpetual apparition [′sər·kəl əv pər′pech·ə·wəl ap·ə′rish·ən] (astronomy) That circle of the celestial sphere, centered on the polar axis and having a polar distance from the elevated pole approximately equal to the latitude of the observer, within which celestial bodies do not set. 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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