The main purpose of these series of international meetings is to provide a forum for advanced discussions in the fields of space and time reference systems, Earth rotation, solar system ephemerides, astrometry and time.

The Journées 2014 will be focused on the issues related to the celestial reference frame and system, relativity and time scales, Earth rotation and geodynamics, numerical standards, ephemerides and dynamical models for planetary systems, future development of astronomical software, etc.

This will include special consideration of the progress of the ESA Gaia mission and of the VLBI2010 project, as well as of the realization of the next ICRF.

This will also include discussion related to IAU Working Groups relevant to the topic of the Journées.