The Nautical Encyclopedia

Patterson’s Illustrated Nautical Encyclopedia — Howard Patterson, 1891

⚓ The Superstition Locker ⚓

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Home ⚓ Letter A ⚓ Aphelion

Aphelion

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That point in the planet's orbit which is furthest from the sun.

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2026 Editor's Note: Aphelion and perihelion left the almanac for the space age: mission controllers speak them daily, and their satellite cousins — apogee and perigee — are broadcast in every launch stream. See apsis. (Ed: BR 2026-07-14)

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The Nautical Encyclopedia (1891) is in the public domain; this digital edition © 2026 PhotoOpAI.