parallactic ellipse

parallactic ellipse

See annual parallax.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

parallactic ellipse

[¦par·ə¦lak·tik i′lips]

(astronomy)

An annual apparent elliptical course of a celestial body on the celestial sphere about its mean position; caused by the elliptical orbital motion of the earth.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.