WASP-121, also known as CD-38 3220 and formally named Dilmun,[8] is a magnitude 10.4 star located approximately 858 light-years (263 parsecs) away in the constellation Puppis.
The star, although metal-rich in terms of overall contents of heavy elements, is depleted of carbon.
[10] The approved names, proposed by a team from Bahrain, were announced in June 2023.
[11] In 2015, the exoplanet WASP-121b was discovered orbiting WASP-121 by the transit method.
[4][13] The exoplanet orbits WASP-121, its host star, every 1.27 days.