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celestial meridian

 
Sci-Tech Dictionary: celestial meridian
(sə′les·chəl mə′rid·ē·ən)

(astronomy) A great circle on the celestial sphere, passing through the two celestial poles and the observer's zenith.


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Columbia Encyclopedia: celestial meridian
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celestial meridian, vertical circle passing through the north celestial pole and an observer's zenith. It is an axis in the altazimuth coordinate system.


 
 

 

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/ Read more