Welcome to the CHEOPS website!

Launch alert!

The Mission

This is the official consortium homepage of the CHEOPS mission. CHEOPS is the first S-class mission from ESA and was selected in October 2012. The launch of the CHEOPS satellite is planned for December 17th 2019.

CHEOPS stands for CHaracterising ExOPlanet Satellite. It is a small photometric observatory to be launched into low Earth orbit to measure transits of exoplanets. See the «Executive Summary» for a short overview.

Please use the menu for further information. The majority of the homepage is currently only available in English. The menu item «public» is also available in German and French.

CHEOPS' location

see more

CHEOPS-Children’s Drawings Campaign

Shown below are 3 of the 2748 drawings that will fly into space with the CHEOPS satellite.


11 December 2019
In a very formal and festive ceremony in Stockholm, the Swedish king Carl XVI Gustaf presented the Nobel prizes to…
11 December 2019
Download this media kit to learn more about the launch of Cheops, the Characterising Exoplanet Satellite, on 17 December 2019,…
5 December 2019
The space telescope CHEOPS is scheduled to begin its journey into space on Tuesday, 17 December 2019 shortly before 10…
see all News

Picture of the month

December 2019
It’s an intense period at Europe’s Spaceport in Kourou, French Guiana, where engineers from ESA, Airbus and CNES have been…


login here