Astronomy and astrophysics Spherical astronomy and astrometry Concept
Right ascension
Summary
Right ascension is the longitude coordinate of the equatorial coordinate system. It is the angle measured eastward along the celestial equator from the March equinox to the hour circle of an object. It is usually given in hours, minutes and seconds, and together with declination it fixes a direction in the sky.
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About this page
| Tag | RHNFB0HEW4 |
|---|---|
| URI | m2://RHNFB0HEW4 |
| Kind | concept |
| Writing | W0 stub |
| MSC | 85A04 |
| Same as | |
| Changed | 3 November 2026 |
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