HD 149026 b

HD 149026 b, also known as Smertrios, is an exoplanet, specifically a hot Jupiter, approximately 250 light-years from the Sun in the constellation of Hercules. Its host star is HD 149026, also named Ogma .

The planet orbits the yellow subgiantstarHD 149026 with a 2.8766-day period at a distance of 0.042 AU (3.9 million mi; 6.3 million km), and is notable first as a transiting planet, and second for a small measured radius (relative to mass and incoming heat) that suggests an exceptionally large planetary core. As its star is evolved to such a stage and the planet is so close, the planet is likely to be destroyed during its imminent red giant stage in the next few hundred million years.