geocentric parallax


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geocentric parallax

See diurnal parallax.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Geocentric Parallax

 

(or diurnal parallax), the angle whose vertex is at the center of a celestial body and whose sides extend to the center of the earth and to the point of observation on the earth’s surface. (See.)

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

geocentric parallax

[¦jē·ō¦sen·trik ′par·ə‚laks]
(astronomy)
The difference in the apparent direction or position of a celestial body, measured in seconds of arc, as determined from the center of the earth and from a point on its surface; this varies with the body's altitude and distance from the earth. Also known as diurnal parallax.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.