APASTRON Definition & Meaning

apastron

[ uh-pas-truhn, -tron ]

Phonetic (Standard)IPA

noun

Astronomy.

plural apastra

the point at which the stars of a binary system are farthest apart ( periastron ).

apastron

/ ə-��ă��′�ٰ�ə�� /

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

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�y��vlog History and Origins

Origin of apastron¹

< New Latin < Greek ap- ap- ² + á��ٰ��ǲ� star, constellation; on the model of apogee

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Example Sentences

Examples have not been reviewed.

These orbs complete a revolution in 180 years, and when in apastron are seventeen times more remote from each other than when at periastron.

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The pair travel in an orbit from fourteen to forty-two times the radius of the Earth’s orbit; so that when at apastron they are three times as distant from each other as when at periastron.

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The eccentricity of their orbit approaches in form that of Faye’s comet, which travels round the Sun; consequently the stars, when at apastron, are twice their periastron distance.

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They wouldn't live to be crushed by disappointment when the Sky Fire receded as Beta went into the long swing toward apastron.

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