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Definition of Proper motion
1. Noun. (astronomy) The change in apparent position of a celestial body due to that body's velocity relative to the Sun. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Proper Motion
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1. Noun. (astronomy) The change in apparent position of a celestial body due to that body's velocity relative to the Sun. ¹
¹ Source: wiktionary.com