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حرکت خاص
Sign in to saveAlso known as total proper motion
astronomical measure of the observed changes in the apparent places of stars in the sky
AI overview
Proper motion is the measure of how fast a star appears to move across the sky from our perspective on Earth. Tracking this motion helps astronomers understand how stars are actually traveling through space and where they might be headed.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Subclass of
- physical quantity
- Image
- Proper Motion.png
Show 5 more facts
- discoverer or inventor
- Edmond Halley
- time of discovery or invention
- 1718-00-00
- studied by
- astrometry
- Commons category
- Proper motion
- different from
- proper velocity
via Wikidata · CC0