WASP-19 is an exoplanet located about 800 light-years away from Earth in the constellation Phoenix. It was discovered in 2011 and is classified as a hot Jupiter, meaning it is a gas giant that orbits very close to its host star, resulting in high surface temperatures. The planet orbits its star, WASP-19, in just 19 hours, making it one of the shortest orbital periods known for a gas giant. Its proximity to the star leads to extreme atmospheric conditions, which scientists study to understand more about the formation and characteristics of exoplanets.