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aphelion(əfē`lēən, ăp'hē`–), point farthest from the sun in the orbit of a body about the sun. See apsisapsis
(pl. apsides), point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides.
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aphelion(ap-hee -lee-ŏn) The point in the orbit of a planet, comet, or artificial satellite in solar orbit that is farthest from the Sun. The Earth is at aphelion on or about July 3.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
Aphelion(religion, spiritualism, and occult)
Although they approximate circles, all orbits are elliptical. The point in a satellite’s orbit where it is farthest from the Sun is called its aphelion (from the Greek words apo, meaning “away,” and helios, meaning “sun”).
The Astrology Book, Second Edition © 2003 Visible Ink Press®. All rights reserved.
The point on a planetary orbit farthest from the sun.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
the point in its orbit when a planet or comet is at its greatest distance from the sun
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005