The Institut de mécanique céleste et de calcul des éphémérides has the role of the calculation and the diffusion of the positions of the Sun, the Moon, planets and other solar system bodies (including local coordinates and the stars rise and set)

Created on the occasion of the preparation of the Bureau des longitudes bicentenary commemoration, the purpose of Messidor Association is to support the national and international activities of the IMCCE, to develop its scientific and cultural activities and to diffuse them.

This declared association (no 1724, JO of April 13, 1994) is entitled to receive donations which will be intended to support all the scientific and cultural actions of the IMCCE.

Any request for information or adhesion to Messidor association must be addressed to :

Caution : This Website was created with the Ministère de l'Education Nationale, the CNRS and the CNES support. Any use of the data published on this website requires the IMCCE agreement..