The Collaborative International Dictionary
Apastron \Ap*as"tron\, n. [Gr. ? from + ? star.] (Astron.) That point in the orbit of a double star where the smaller star is farthest from its primary.
Wiktionary
n. (context astronomy English) The point of greatest separation between two stars, especially in a binary star situation.
Usage examples of "apastron".
The ecliptics intersected 644 and 1428 terrestrial years after apastron or, in Helliconian terms, 453 and 1005 years after apastron.
Helliconia in the grip of apastron winter was never as dead as this rigid globe.
The great processes of the Helliconian year would grind on towards apastron and the winter solstice.
At the moment, it was just past apastron, which meant Cerberus-A was almost exactly ten light-hours away.
After apastron and the darkest years, Freyr again began to make its influence felt.
To light our dreams At rose Aldebaran or sky-huge Antates, Then quench their heat, or temper Damascus thought In cold aphelions and apastrons far!
The present year, the year of Asperamanka’s incursion into Chalce, was 1308 After Apastron.
The station was outward bound for the apastron of its shortened and cometary path.