Welcome to the CHEOPS website!

Launch alert!

Launch events

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 with a launch foreseen in the last quarter of 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

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CHEOPS-Children’s Drawings Campaign

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


4 November 2019
Soon, CHEOPS will launch from Europe’s Spaceport in Kourou, French Guiana, to study exoplanets. The mission is a partnership between…
21 October 2019
Last station before launch! The CHEOPS satellite has arrived by plane on 16 October 2019 at Europe's Spaceport Kourou in…
13 October 2019
Willy Benz is particularly pleased about this year’s Nobel Prize in Physics for the Swiss astronomers Michel Mayor and Didier…
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Picture of the month

October 2019
CHEOPS with the airbus team at Kourou launch facilities (courtesy of ADS Madrid).


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