description WASP-189b Overview
WASP-189b is a giant exoplanet orbiting a young A-type star. It’s notable for being one of the hottest known exoplanets, reaching dayside temperatures around 3400 Kelvin. Its ultrashort orbital period makes it an ideal target for studying atmospheric processes and transiting planets. Astronomers and researchers focused on planetary atmospheres investigate this planet to understand hot Jupiter formation and evolution.
help WASP-189b FAQ
How hot is the exoplanet WASP-189b?
WASP-189b is classified as an ultra-hot Jupiter, with dayside temperatures reaching around 3,400 Kelvin. This makes it one of the hottest known exoplanets ever discovered. Its extreme heat is due to its close orbit around a very bright, scorching A-type star.
What space telescope studied WASP-189b?
The European Space Agency's CHEOPS (Characterising Exoplanet Satellite) mission studied WASP-189b intensively. Launched in 2019, CHEOPS is specifically designed to measure the sizes and brightness of known exoplanets. Observations from CHEOPS revealed the planet's glowing, extremely hot atmosphere.
What type of star does WASP-189b orbit?
The exoplanet orbits a bright, blue A-type star named HD 133112. These stars are significantly hotter and burn through their fuel much faster than our Sun. Because the star is so bright, it was easily visible to the CHEOPS space telescope.
How was WASP-189b discovered?
The planet was initially discovered in 2018 by the Wide Angle Search for Planets (WASP) survey. WASP uses an array of cameras to monitor the brightness of millions of stars, looking for the slight dips caused by transiting planets. It was later characterized in detail by the CHEOPS mission.
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