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ESA Data Ontology

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Concept information

... > Observational astronomy > Astronomical techniques > Astrometry > Astronomical coordinate systems > Horizontal coordinate system > Meridian

Preferred term

Meridian  

Definition

  • An imaginary great circle on the celestial sphere that passes through its poles and the observer's zenith. (en)

Broader concept

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/1026

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