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CHEOPS Observes One of Hottest Exoplanets Known to Date

Dragon
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CHEOPS Observes One of Hottest Exoplanets Known to Date Empty CHEOPS Observes One of Hottest Exoplanets Known to Date

Post by Dragon Tue Sep 29, 2020 5:52 pm

Because of its proximity to its parent star, the dayside equilibrium temperature of the ultrahot Jupiter WASP-189b reaches 3,162 degrees Celsius (5,724 degrees Fahrenheit), according to an analysis of data collected by ESA’s CHEOPS (CHaracterising ExOPlanet Satellite) mission.

Discovered in 2018, WASP-189b is a gas giant transiting the 730-million-year-old A-type star WASP-189.

Also known as HD 133112, the host star is larger and more than 2,000 degrees Celsius hotter than the Sun, and so appears to glow blue.

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CHEOPS Observes One of Hottest Exoplanets Known to Date 334pu7m
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Post by Dragon Tue Sep 29, 2020 6:03 pm

CHEOPS Observes One of Hottest Exoplanets Known to Date Image_6294-Ultrahot-Jupiter
Image credit: Sci-News.com.

An artist’s impression of an ultrahot Jupiter.

WASP-189b sits around 20 times closer to its star than Earth does to the Sun, and completes a full orbit in just 2.7 days.

Source / Image Courtesy


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CHEOPS Observes One of Hottest Exoplanets Known to Date 334pu7m
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Post by Dragon Tue Sep 29, 2020 6:05 pm

CHEOPS Observes One of Hottest Exoplanets Known to Date Image_8898-WASP-189b
Image credit: ESA.

Key parameters of the WASP-189 planetary system

Source / Image Courtesy


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CHEOPS Observes One of Hottest Exoplanets Known to Date 334pu7m
Dragon
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Post by Dragon Tue Sep 29, 2020 6:07 pm



CHEOPS (CHaracterising ExOPlanet Satellite) hunt for planets mission.


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CHEOPS Observes One of Hottest Exoplanets Known to Date 334pu7m

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