apastron
[ uh-pas-truhn, -tron ]
/ əˈpæs trən, -trɒn /
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noun, plural ap·as·tra [uh-pas-truh]. /əˈpæs trə/. Astronomy.
the point at which the stars of a binary system are farthest apart (opposed to periastron).
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for apastron
They wouldn't live to be crushed by disappointment when the Sky Fire receded as Beta went into the long swing toward apastron.
Oomphel in the Sky|Henry Beam Piper
Scientific definitions for apastron
apastron
[ ə-păs′trən ]
The point at which an object, such as a planet or comet, is farthest from the center of mass of the star it is orbiting. Compare periastron.
The American Heritage® Science Dictionary
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