aphelion

• Measuring from a fixed position of the earth, it would give similarly a series of positions of Mars, which, though lying not far from the circle whose diameter was the axis of Mars' orbit, joining perihelion and aphelion, always fell inside the circle except at those two points. —  Kepler
• When we're at aphelion, it's a longer distance—six or seven AUs, at least. —  Steele, Allen - [Near-Space 05] - A King of Infinite Space
• Mars had been approaching aphelion, its farthest distance from the Sun. —  AnalogSFF,July-August2008
• And each of the six worlds is chugging along in its own orbit, naturally, some of them at perihelion at the moment and others at aphelion, and from the point of view of the Wotan , confronting the whole system on the skew as it is, they are strewn randomly around the sky Hesper knows which of the six is Planet A, though. —  Starborne
• Journalist answer's dad's question 'What are you for?' by going home aphelion: (noun) the point in the orbit of a planet, asteroid or comet at which it is farthest from the sun. —  Island Packet: Home

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