astrogeodetic deflection

astrogeodetic deflection

[‚as·trō‚jē·ə′ded·ik di′flek·shən]
(geodesy)
The angle at a point between the normal to the geoid and the normal to the ellipsoid of an astrogeodetically oriented datum. Also known as relative deflection.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.