The Institut de mecanique celeste et de calcul des ephemerides provides and publishes ephemerides of solar system bodies. It serves as the official and public source of ephemerides devoted to regulate calendars.

It performs theoretical research activities in the fields of celestial mechanics, planetology and mathematics. It initiates and coordinates observing campaigns of rare and specific celestial events.


Agenda 2014

For several years, the Observatoire de Paris and IMCCE publish this unique astronomical calendar.
Explore the sky until these distant galaxies, read about the scientific advances that have revealed the mysteries of the universe, find these men and women who have pushed the boundaries of knowledge! You will also find, this year, the latest advances in radio astronomy.

L'observatoire de la marine et du Bureau des longitudes au parc Montsouris 1875-1914

Why a marine observatory in Paris, in Parc Montsouris?

The answer is contained in this story, so far forgotten, that Guy Boistel has patiently reconstructed from the extensive archives of the Bureau des Longitudes, among others.

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..