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HD 85512 b
HD 85512 b is an exoplanet orbiting Gliese 370, a K-type main-sequence star approximately 36 light-years from Earth in the constellation of Vela.〔〔
Due to its mass of at least 3.6 times the mass of Earth, HD 85512 b is classified as a near Earth sized exoplanet (<5M⊕) and is one of the smallest exoplanets discovered to be just outside the inner edge of the habitable zone.〔 HD 85512 b, along with Gliese 581 d, was once considered to be one of the best candidates for habitability in 2011,〔 but its habitability is now disputed due to PHL's redefinition of the Habitable Zone. 〔http://phl.upr.edu/press-releases/anewhabitablezone〕
==Detection and discovery==
HD 85512 b was discovered by scientists at University of Geneva, Switzerland, led by Swiss astronomer Stéphane Udry of the Guaranteed Time Observations (GTO) program of High Accuracy Radial velocity Planet Searcher (HARPS), a high-precision echelle spectrograph installed on ESO's 3.6 m telescope at La Silla Observatory in Chile.〔(【引用サイトリンク】title=HARPS: Hunting for Nearby Earth-like Planets )〕 The team used the Doppler spectroscopy technique which determines the minimum mass of the planet through slight changes in motion of the parent star. It was discovered on August 17, 2011.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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