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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. 2022
How to use apastron in a sentence
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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