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apastron

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
Ap`as´tron
n.1.(Astron.) That point in the orbit of a double star where the smaller star is farthest from its primary.

apastron  (-pstrn)
1. The point at which two stars orbiting each other in a binary star system are farthest apart.
2. The point at which an object, such as a planet or comet, is farthest from the star it is orbiting. Compare periastron.


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