HD 330075 b

HD 330075 b is an extrasolar planet orbiting the star HD 330075, located approximately 163 light-years away in the constellation Tucana. It was discovered in 2004 using the radial velocity method, which detects variations in a star's motion caused by the gravitational pull of an orbiting planet.

HD 330075 b is classified as a hot Jupiter, a type of gas giant exoplanet that is physically similar to Jupiter but has a very short orbital period, placing it extremely close to its host star. Its mass is estimated to be approximately 0.76 times the mass of Jupiter. The planet completes an orbit around HD 330075 in just 3.36 days at an incredibly close distance of roughly 0.04 astronomical units (AU). For comparison, Mercury, the closest planet to our Sun, orbits at an average distance of about 0.39 AU.

Due to its proximity to its star, HD 330075 b is extremely hot, with estimated equilibrium temperatures likely exceeding 1,500 Kelvin. This intense heat results in a likely inflated atmosphere and makes the planet tidally locked, meaning one side always faces the star. Detailed atmospheric studies are challenging due to the limitations of current observational technology. Further observations are needed to fully understand the planet's composition and atmospheric dynamics.