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| physical phenomena > event > celestial event > periodic celestial event > orbital event > binary star orbital event > apastron | 
| apastron comparison table | |||||
| Subject | has participant | has definition | is a kind of | is an instance of | has antonym | 
|---|---|---|---|---|---|
| binary star orbital event | orbital event | ||||
| apastron | binary star | The point in the orbit of one component of a binary system where it is farthest from the other. | binary star orbital event | periastron | 
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