Astronomy Answers
From the Astronomical Dictionary

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the apofocus

plural apoapsiden; apo = [Latin] from

The apofocus of an orbit of one object around another is the point at which the one object is furthest away from the other object. Apoapsis is the general term for such a point, but there are also many specific terms for specific cases: the aphelion is the furthest point from the Sun in an orbit around the Sun. Likewise, apoastron is linked to other stars, apogee to the Earth, and apojove to Jupiter. The opposite is perifocus.