HD 149026 b
extrasolar planet
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 subgiant star HD 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.
Name
Following its discovery in 2005 the planet was designated HD 149026 b. In July 2014, the International Astronomical Union launched NameExoWorlds, a process for giving proper names to certain exoplanets and their host stars. The process involved public nomination and voting for the new names. In December 2015, the IAU announced the winning name was Smertrios for this planet. The winning name was submitted by the Club d'Astronomie de Toussaint of France. Smertrios was a Gallic deity of war.
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This entry incorporates text from “HD 149026 b” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.