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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 apsis apsis (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. ..... Click the link for more information. . aphelion the point in its orbit when a planet or comet is at its greatest distance from the sun aphelion [ə′fēl·yən] (astronomy) The point on a planetary orbit farthest from the sun. |
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