Reference Systems
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Meetings
IAU Joint Discussion 7
Redefinition of the astronomical unit
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International Astronomical Union
http://www.iau.org/
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International Association of Geodesy
http://www.iag-aig.org/
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International Astronomical Union Division 1 Fundamental Astronomy
http://maia.usno.navy.mil/iaudiv1/index.html
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International Earth Rotation and Reference Systems Service
www.iers.org
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Standards of Fundamental Astronomy
http://www.iausofa.org/
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International Terrestrial Reference Frame
http://itrf.ensg.ign.fr/
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International Celestial Reference Frame
http://www.iers.org/nn_114168/IERS/EN/DataProducts/ICRF/ICRF2/icrf2.html?__nnn=true
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International DORIS Service
http://ids-doris.org/
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International GNSS Service
http://igscb.jpl.nasa.gov/
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International Laser Ranging Service
http://ilrs.gsfc.nasa.gov/
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International VLBI Service for Geodesy and Astrometry
http://ivscc.gsfc.nasa.gov/