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Date: 2010-09-01 10:55:58Astronomy Barycentric Dynamical Time Dynamical time scale Barycentric Coordinate Time Ephemeris time Axial precession Coordinate time Terrestrial Time Astronomical unit Measurement Time scales Astrology | Add to Reading ListSource URL: www.iau.orgDownload Document from Source WebsiteFile Size: 259,54 KBShare Document on Facebook |