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Concept information

Preferred term

Proper motions  

Definition

  • The apparent motion of a star across the sky (not including a star's parallax), arising from the star's velocity through space with respect to the Sun. Proper motion is usually tabulated in star catalogs as changes in right ascension and declination per year or century. (en)

Broader concept

Entry terms

  • Stellar spatial motions (en)

Editorial note

URI

http://astrothesaurus.org/uat/1295

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