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 which operates in a low Earth orbit to measure transits of exoplanets. See the «Executive Summary» for a short overview.

Most of the content of the menu items «News» and «Media & Outreach» is also available in German and French.

CHEOPS-Children’s Drawings Campaign

Below are 3 of the 2748 drawings that orbit the earth with the CHEOPS satellite.

CHEOPS Cartoon


CHEOPS finds unique planetary system

January 25th, 2021

The CHEOPS space telescope detects six planets orbiting the star TOI-178. Five of the planets are...

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One-year launch anniversary of CHEOPS

December 17th, 2020

In its first year in orbit, the CHEOPS space telescope has already revealed details of one of the...

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CHEOPS had to avoid space debris

November 5th, 2020

Space debris increasingly threatens rockets, the international space station and satellites. At t...

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Picture of the Month

Artist’s animation of the TOI-178 orbits and resonances (sound on!)

February 3rd, 2021

This animation shows a representation of the orbits and movements of the planets in the TOI-178...

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see all pictures of the month

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