Apparent motion of a star across the celestial sphere at right angles to the observer's line of sight, generally measured in seconds of arc per year. Any radial motion (toward or away from the observer) is not included. Edmond Halley was the first to detect proper motions; the largest known is that of Barnard's star, about 10 seconds yearly.
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Proper may refer to:
MAS Reviews- Ambit of Proper Officer's Power to Dismiss Review Application Judicially Considered.(Motivation Assessment Scale )(Case overview)
Oct 11, 2010; MAS Reviews- Ambit of proper Officer's Power to Dismiss Review Application Judicially Considered Judgment date: 1 October...