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International Celestial Reference System and its realizations

The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union (IAU). Its origin is at the barycenter of the Solar System, with axes that are intended to "show no global rotation with respect to a set of distant extragalactic objects". The coordinates are basically…

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International Celestial Reference System and its realizations

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Avg. degree1.95
Density0.045455
Components1

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reference frame sources celestial international system icrf icrs astronomical frames positions extragalactic axes using icrf1 radio union realization icrf2 optical

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