WASP-17

WASP-17, also named Dìwö, is an F-type main sequence star approximately 1,310 light-years away in the constellation Scorpius. It hosts the planet WASP-17b.
The star, although similar to the Sun in terms of overall contents of heavy elements, is depleted of carbon. The carbon to oxygen molar ratio of 0.18 for WASP-17 is well below the solar ratio of 0.55.

Nomenclature

The planet was discovered by the SuperWASP project, hence the name WASP-17.
This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Costa Rica. WASP-17 is named Dìwö, which in the Bribri language means the Sun, and its planet is named Ditsö̀.

Planetary system

As of 2009, an exoplanet has been confirmed to orbit the star. The planet, WASP-17b, is unusual in that it is believed to orbit in the opposite direction to the star's spin, and is twice the size of Jupiter, but half its mass. The planet is also named Ditsö̀. It is subject to intensive photo-evaporation, and may be completely destroyed within one billion years from now.