HD 189733

HD 189733 is a star located approximately 64.5 light-years away in the constellation Vulpecula. It is a K-type main-sequence star, slightly smaller and less massive than the Sun.

HD 189733 is notable for hosting the exoplanet HD 189733b, a hot Jupiter that orbits the star very closely. The planet's proximity to its star results in an extremely short orbital period of roughly 2.2 days.

The HD 189733 system has been extensively studied, particularly HD 189733b. Observations have been made across multiple wavelengths, providing valuable insights into exoplanet atmospheres. Notably, HD 189733b was one of the first exoplanets for which water vapor and organic molecules were detected in its atmosphere.

The extreme conditions on HD 189733b, including its high temperature and strong winds, have made it a subject of intense research in the field of exoplanet atmospheric science. Further study of this system contributes to a broader understanding of planetary formation and the diversity of planetary environments beyond our solar system.