proper motion

Fetched 2026-10-26 (cache).

Synonyms: proper motions

Antonyms: proper motions

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy}} The change in apparent position of a [[celestial body]] due to that body's velocity relative to the [[Sun]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.