aphelion

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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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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

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.

aphelion

[ə′fēl·yən]
(astronomy)
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.

aphelion

aphelionclick for a larger image
That point in the orbit of a planet or comet where it is the farthest away from the sun.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

aphelion

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