
(from the article `apse`) ...or centre of attraction. The line of apsides, connecting the two points, is the major axis of the orbit. The point nearest the focus is the ...
Found on
http://www.britannica.com/eb/a-z/a/88

The point on a spacecraft's orbit at which it is furthest away from the body it is orbiting. See also: Orbit.
Found on
https://www.encyclo.co.uk/local/20687
No exact match found.