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WASP-121
WASP-121, also known as CD-38 3220 and formally named Dilmun, is a magnitude 10.4 star located approximately away in the constellation Puppis. WASP-121 has a mass and radius similar to the Sun's. It hosts one known exoplanet. The star, although metal-rich in terms of overall contents of heavy elements, is depleted of carbon. The carbon to oxygen molar ratio of 0.23 for WASP-121 is well below the solar ratio of 0.55. Nomenclature The designation ''WASP-121'' indicates that this was the 121st star found to have a planet by the Wide Angle Search for Planets. In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Bahrain, were announced in June 2023. WASP-121 is named Dilmun after the ancient civilization, and its planet is named Tylos after the ancient Greek name for Bahrain. Planetary system In 2015, the exoplanet WASP-121b was discovered orbiting WASP-121 by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WASP-121b
WASP-121b, formally named Tylos, is an exoplanet orbiting the star WASP-121. WASP-121b is the first exoplanet found with an extrasolar planetary stratosphere (an atmosphere, atmospheric layer in which temperatures increase as the altitude increases) and the first that contains water. WASP-121b is in the constellation Puppis, and is about 858 light-years from Earth. Nomenclature In August 2022, this planet and its host star were included among 20 systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Bahrain, were announced in June 2023. WASP-121b is named Tylos after the Tylos, ancient Greek name for Bahrain, and its host star is named WASP-121, Dilmun after the Dilmun, ancient civilization. Characteristics WASP-121b is an ultra-hot Jupiter exoplanet with a mass about 1.16 times that of Jupiter and a radius about 1.75 times that of Jupiter. The exoplanet orbits WASP-121, its host star, every 1.27 days. In 2019 a work by Hellard ''e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
