parallactic orbit

parallactic orbit

[¦par·ə¦lak·tik ′ȯr·bət]

(astronomy)

The apparent orbit of a star as it appears to move once around in the sky each year; the motion is caused by the earth's orbital motion around the sun.

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