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XO-3
XO-3 is a star in the constellation Camelopardalis. The star has a magnitude of 10 and is not visible to the naked eye but is visible through a small telescope.〔 A search for a binary companion star using adaptive optics at the MMT Observatory was negative.〔 ==Planetary system== In 2007 the gas giant exoplanet XO-3b was discovered by the XO Telescope using the transit method. This object may be classed as brown dwarf because of its high mass.〔
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「XO-3」の詳細全文を読む
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