Apastron

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Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. The point of greatest separation between two stars, especially in a binary star situation.
  • the GNU version of the Collaborative International Dictionary of English
  • n. That point in the orbit of a double star where the smaller star is farthest from its primary.
  • The Century Dictionary and Cyclopedia
  • n. In astronomy, that part in the orbit of a double star where it is furthest from its primary.
  • Word Usage
    "They had already passed apastron and were downward bound."
    Antonym
    periastron