ESA title

The mission

Cheops is ESA's CHaracterising ExOPlanet Satellite. It is the first mission dedicated to studying bright, nearby stars that are already known to host exoplanets, in order to make high-precision observations of the planet's size as it passes in front of its host star. It will focus on planets in the super-Earth to Neptune size range, with its data enabling the bulk density of the planets to be derived – a first-step characterisation towards understanding these alien worlds.

The launch

  • Launch date: 18 December 2019
  • Launch site: Kourou, French Guiana
  • Launcher: Soyuz-Fregat
  • Orbit: Sun-synchronous, dusk-dawn orbit at 700 km above Earth
Cheops

Latest

Artist's impression of star HD 93396 and its hot Jupiter planet, KELT-11b
Science & Exploration

Cheops observes its first exoplanets and is ready for scien…

16/04/2020 6759 views 68 likes
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Cheops image of its first target star
Science & Exploration

A perfect blur – First image by exoplanet watcher Cheops

07/02/2020 7283 views 31 likes
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Artist's impression of Cheops
Science & Exploration

Cheops opens its eye to the sky

29/01/2020 5155 views 42 likes
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Science & Exploration

Liftoff for Cheops, ESA’s exoplanet mission

18/12/2019 6030 views 22 likes
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Cheops launch
Science & Exploration

Watch Cheops launch live

17/12/2019 25500 views 117 likes
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More items

  • Science & Exploration

    Watch Cheops launch live

    17/12/2019 25500 views 117 likes
    Open item
    Cheops launch

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