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HD 113766
HD 113766 is a binary star system located 424 ly from Earth〔 in the direction of the constellation Centaurus. The star system is approximately 10 million years old and both stars are slightly more massive than our sun. The two are separated by an angle of 1.3 arcseconds, which, at the distance of this system, corresponds to a projected separation of at least 170 AU.〔
What makes HD 113766 special is the presence of a large belt of warm (~440 K) dust surrounding the star HD 113766 A.〔 The dense dust belt, more than 100 times more massive than our own asteroid belt, is thought to be collapsing to form a rocky planet, which when it has formed will lie within the star's terrestrial habitable zone where liquid water can exist on its surface. HD 113766 represents the most well understood system in a growing class of objects that should provide more clues to how rocky planets like the Earth formed.
==HD 113766 A==
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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