IAU Division 1 Working Group
Numerical Standards for Fundamental Astronomy
Links to Related Web Sites
NSFA Home
Best Estimates
IAU 2009 System
Contacts
Fixed Constants
Archive
References
Links
IAU Commission A3: Fundamental Standards
(astronomical standards and current topics)
IAU Division I
IERS: International Earth Rotation and Reference Systems
IERS Conventions
IAG: International Association of Geodesy
BIPM: Bureau International des Poids et Mesures
SI: The International System of Units
CCU: Consultative Committee for Units
CODATA Task Group on Fundamental Constants
© IAU, 2010-2011