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Kepler-62
Kepler-62 is a star somewhat cooler and smaller than the Sun in the constellation Lyra, 1,200 light years from Earth. It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission used to detect planets that may be transiting their stars. On April 18, 2013 it was announced that the star has five planets, two of which, Kepler-62e and Kepler-62f, are likely solid planets within the star's habitable zone.
==Nomenclature and history==
Prior to Kepler observation, Kepler-62 had the 2MASS catalogue number 2MASS J18525105+4520595. In the Kepler Input Catalog it has the designation of KIC 9002278, and when it was found to have transiting planet candidates it was given the Kepler object of interest number of KOI-701.
The star's planets were discovered by NASA's Kepler Mission, a mission tasked with discovering planets in transit around their stars. The transit method that Kepler uses involves detecting dips in brightness in stars. These dips in brightness can be interpreted as planets whose orbits move in front of their stars from the perspective of Earth. The name Kepler-62 derives directly from the fact that the star is the catalogued 62nd star discovered by ''Kepler'' to have confirmed planets.
The designations ''b'', ''c'', ''d'', ''e'', and ''f'' derive from the order of discovery. The designation of ''b'' is given to the first planet orbiting a given star, followed by the other lowercase letters of the alphabet. In the case of Kepler-62, all of the known planets in the system were discovered at one time, so ''b'' is applied to the closest planet to the star and ''f'' to the farthest.〔
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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