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List of exoplanetary host stars
The following is a list of 678 exoplanetary host stars sorted by right ascension. The table contains information about the coordinates, spectral and physical properties, and number of confirmed planets as of September 2013. The two most important stellar properties are mass and metallicity because they determine how these planetary systems form. Stars of higher mass and metallicity tend to have more numerous and more massive planets.
Most of the stars below are solar-type, mainly in the spectral classes F, G, and K, because astronomers tend to look for planets around stars similar to the Sun. Others are giants, which have used up all the hydrogen in their cores. Finding planets around giant stars gives clues as to how planetary systems evolve and how the properties of planets change with the evolution of the stars.
As of 2013, there are 549 stars with one confirmed planet, and only 129 stars with two or more confirmed transiting planets; that is, only 17% of all exoplanetary host stars have two or more confirmed transiting planets. The star with the most confirmed planets is HD 10180, containing 7 confirmed planets, plus two more unconfirmed planets. The most massive exoplanetary host star is Epsilon Tauri (), while the least massive is 2M J044144 (). The most metal-rich star is 1RXS 1609 (0.616 dex, 4.13 × Sun), while the most metal-poor is HIP 13044 (−2.086, 0.0082 × Sun). The nearest exoplanetary host star is Alpha Centauri B (4.36 ly), while the most distant is MOA-2008-BLG-310L (23807 ly). Visually, the brightest exoplanetary host star seen from Earth is Pollux (1.15), while the faintest is OGLE-2005-BLG-390L (27.98).
==List==
''A yellow row denotes a star with multiple planets.''
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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