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List of directly imaged exoplanets : ウィキペディア英語版 | List of directly imaged exoplanets This is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light and are far from the glare of the star. Currently, this list includes both directly imaged planets and imaged planetary-mass companions (objects that orbit a star but formed through a binary-star-formation process, not a planet-formation process). This list does not include free-floating planetary-mass objects in star-forming regions or young associations, which are also referred to as rogue planets. The least massive planet is Fomalhaut b, which has a mass of 2 MJ or less. The coldest and oldest is 59 Virginis b with a mean temperature of 240 °C and age of 100–500 million years.〔( Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 504 )〕 This list includes the four members of the multi-planet system that orbit HR 8799. ''Yellow rows denote the members of the multi-planet system'' == References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「List of directly imaged exoplanets」の詳細全文を読む
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