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ESA Data Ontology

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Concept information

... > Astrophysical processes > Gravitation > Celestial mechanics > Orbits > Orbital elements > Apsides > Periastron

Preferred term

Periastron  

Definition

  • In a binary system, the point in the orbit where a component is nearest the other component; opposite of apastron. (en)

Broader concept

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/1208

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