Micru created this task. Herald added subscribers: StudiesWorld, Aklapper. TASK DESCRIPTION In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets, stars, galaxies, and so on. Coordinate systems can specify a position in 3-dimensional space, or merely the direction of the object on the celestial sphere, if its distance is not known or not important. The celestial equivalent of latitude is called **declination **and is measured in degrees North (positive numbers) or South (negative numbers) of the Celestial Equator. The celestial equivalent of longitude is called** right ascension**. The most popular celestial coordinate system is the **equatorial coordinate system** and, similarly to the geographic coordinate data type, it requires of two angles, right ascension and declination. The nomenclature is a bit different using hour angles (hours ( h ), minutes ( m ), and seconds ( s )) instead of degrees (degree, (°) minute ('), second ('')), which means that a circumference is 24h instead of the customary 360°. Example: https://en.wikipedia.org/wiki/Sirius
TASK DETAIL https://phabricator.wikimedia.org/T127950 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Micru Cc: Aklapper, Micru, StudiesWorld, Izno, Wikidata-bugs, aude, Mbch331 _______________________________________________ Wikidata-bugs mailing list Wikidata-bugs@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs