OPAR is a component of the International VLBI Service for Geodesy and Astrometry (IVS)

Analysis service

Related projects

Data center

OPAR is one of the three IVS primary data centers (FTP access)


Scientific coordination

IT Management


Sébastien B Lambert, Astronomer

Christophe Barache, Research Engineer

Sébastien B Lambert, Astronomer, Earth's rotation , link to Earth's climate and deep interior
Christophe Barache, Research Engineer, link to Gaia and optical
César Gattano, Postdoc, celestial frame stability
Yann Ziegler, Postdoc, Earth's deep interior
Ibnu Nurul Huda, PhD student, Earth's deep interior

SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ Paris 06, LNE
61 av de l'Observatoire, 75014 Paris, France
E-mail: firstname . lastname [] obspm . fr