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Date: 2016-07-29 05:05:43Astrology Astrometry Celestial coordinate system Measurement Astronomy Astrological aspects Geodesy Spherical astronomy SOFA Proper motion Apparent place Epoch | International Astronomical Union Standards Of Fundamental Astronomy SOFA Astrometry ToolsAdd to Reading ListSource URL: www.iausofa.orgDownload Document from Source WebsiteFile Size: 231,76 KBShare Document on Facebook |