HD 189080

HD 189080 is a yellow dwarf star located approximately 63 light-years away in the constellation Vulpecula. It is slightly more massive and luminous than the Sun. The star is most notable for hosting a hot Jupiter exoplanet, HD 189080 b.

HD 189080 b

HD 189080 b is a gas giant exoplanet orbiting very close to its host star, HD 189080. Classified as a hot Jupiter, it has a short orbital period of approximately 2.2 days. The planet is tidally locked to the star, meaning one side perpetually faces the star while the other remains in permanent darkness.

HD 189080 b is one of the most well-studied hot Jupiters due to its proximity to Earth and frequent transits across its star. These transits allow astronomers to study the planet's atmosphere in detail using techniques like transit spectroscopy. Observations have revealed the presence of water vapor and organic molecules in its atmosphere. Furthermore, silicate particles, or sand, have been detected, suggesting the possibility of silicate rain on the planet. The extreme temperatures and conditions on HD 189080 b make it an inhospitable environment for life as we know it.

The HD 189080 system provides valuable insights into the formation and evolution of exoplanets, particularly hot Jupiters. Studies of its atmosphere help to refine our understanding of atmospheric processes on distant worlds.