CHEOPS results of the observation of WASP-189b
CHEOPS results of the observation of WASP-189b
The presentation summarizes the results of the extensive observations of ESA's CHEOPS space telescope of exoplanet WASP-189b and its star HD133112. The star, whose unusual orbit passes close to the poles of the star, has a diameter of 3.36 million kilometres and is thus 2.4 times as large as the Sun. At its surface, it is over 8000 degrees Celsius, 2000 degrees hotter than our central star. HD133112 rotates very fast, at the equator faster than at the poles. It is estimated to be 730 million years old (Sun: 4.56 billion years). WASP-189b orbits its star in only 2.7 days on an orbit 20 times closer than the Earth. With a diameter of 224,000 kilometres, the exoplanet is more than 1.5 times as large as Jupiter, the largest planet in the Solar System (see comparison in the graphic on the right-hand side of the image). With a surface temperature of 3200 degrees Celsius, it is one of the hottest bodies among the more than 4000 exoplanets discovered to date – the existence of life is therefore completely excluded there.
