Welcome to the CHEOPS website!

Cheops' location

Live position of the CHEOPS satellite

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. CHEOPS was successfully launched on December 18th 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-Children’s Drawings Campaign

Shown below are 2 of the 2748 drawings that will fly into space with the CHEOPS satellite.

Cheops Cartoon



8 January 2020
Before Christmas, on 18 December 2019, a Soyuz Fregat rocket was launched in Kourou, French Guyana, and put ESA’s CHEOPS…
23 December 2019
Merry Christmas and happy new year! Illustration - « La Liberté », 18.12.2019, Alex Ballaman
18 December 2019
The relief was huge when the Soyuz Fregat rocket with CHEOPS on board took off shortly before 10 a.m. MEZ…
see all News

Picture of the month

January 2020
CHEOPS can clearly be seen in this exposure of the night sky taken on 12 January 2020 at 13:18 UTC,…


login here