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XO-1b
XO-1b is an extrasolar planet approximately light-years away〔 in the constellation of Corona Borealis. The planet was discovered orbiting the yellow dwarf star now designated XO-1 in 2006.〔
== Discovery ==
In 2006, the XO Project an international team of professional and amateur astronomers discovered a Jupiter-sized planet, later named XO-1b, orbiting a Sun-like star.〔 The team, led by Peter McCullough of the Space Telescope Science Institute in Baltimore, had four amateur astronomers hailing from North America and Europe.〔
The XO Project team employed the relatively inexpensive XO Telescope, made from commercial equipment, to search for extrasolar planets.〔 This telescope consists of two 200-millimeter telephoto camera lenses, and resembles binoculars in shape. It stands on the 10,000 foot summit of the Haleakalā volcano on the Hawaiian Island of Maui.〔
From September 2003 to September 2005, the XO Telescope detected tens of thousands of bright stars. In that time, McCullough's team of amateur astronomers studied a few dozen stars they had previously identified as promising candidates for extrasolar planets. The star XO-1, in particular, was marked as a promising candidate in June 2005. The amateur astronomers observed it from June to July 2005, eventually confirming that a planet-sized object was eclipsing it. McCullough's team then turned to the McDonald Observatory in Texas for information on the object's mass and to confirm it was a planet.
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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