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
- Stellar motion (en)
Entry terms
- Stellar spatial motions (en)
URI
http://astrothesaurus.org/uat/1295
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