periastron

See also: Periastron

English

Etymology

From Ancient Greek περί (perí, “around”) + ἄστρον (ástron, “star”).

Pronunciation

  • IPA(key): /pɛɹɪˈæstɹən/

Noun

periastron (plural periastrons or periastra)

  1. (astronomy) That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.

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