annual aberration

annual aberration

See aberration.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

annual aberration

[′an·yə·wəl ab·ə′rā·shən]
(astronomy)
Aberration caused by the velocity of the earth's revolution about the sun.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Superimposed on nutation is a tiny annual shift in the apparent positions of all stars due to Earth's 30-kilometer-per-second orbital motion with respect to their incoming light (annual aberration).
Polar nights

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