horizon system of coordinates

horizon system of coordinates

[hə′rīz·ən ¦sis·təm əv kō′ȯrd·ən·əts]
(astronomy)
A set of celestial coordinates based on the celestial horizon as the primary great circle.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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