The International Celestial Reference System (ICRS) is the current standard celestial reference system adopted by the International Astronomical Union...
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coordinate system Earth orientation parameters Geodetic datum International Celestial Reference System and its realizations Terrestrial reference frame World...
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with the observer International Celestial Reference System and its realizations – Current standard celestial reference system and frame Orbital elements –...
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global time and reference frame standards, notably through its Earth Orientation Parameter (EOP) and International Celestial Reference System (ICRS) groups...
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needed] Month Lunar year Timekeeping on Mars International Celestial Reference System and its realizations Nautical time Sidereal time Ramirez-Simon, Diana...
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astronomical objects International Celestial Reference System and Its Realizations, the current IAU approved reference frames in radio and optical wavelengths...
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e.g. the Hindu and Buddhist calendars. Astrometry Ephemeris time Epoch International Celestial Reference System and its realizations Time in astronomy...
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In physics and astronomy, a frame of reference (or reference frame) is an abstract coordinate system whose origin, orientation, and scale are specified...
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mid- nineteenth century were instructive to the Celestial Empire's realization that it had lost its eminence as a prevailing world power. The defeats...
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Prime meridian (redirect from International Prime Meridian)
versions, the ideal International Terrestrial Reference System (ITRS) and its realization, the International Terrestrial Reference Frame (ITRF). A current...
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