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Kepler-5
Kepler-5 is a star located in the constellation Cygnus in the field of view of the Kepler Mission, a NASA project aimed at detecting planets in transit of, or passing in front of, their host stars as seen from Earth. One closely orbiting, Jupiter-like planet, named Kepler-5b, has been detected around Kepler-5. Kepler-5's planet was one of the first five planets to be discovered by the Kepler spacecraft; its discovery was announced on January 4, 2010 at the 215th meeting of the American Astronomical Society after being verified by a variety of observatories. Kepler-5 is larger and more massive than the Sun, but has a similar metallicity, a major factor in planet formation.
==Nomenclature and history==
Kepler-5 is named so because it was the fifth planet-bearing star discovered during the course of the Kepler Mission, a NASA operation that seeks to discover Earth-like planets that transit, or cross in front of, their host stars with respect to Earth. The star's planet, Kepler-5b, was the second of the first five planets to be discovered by the Kepler spacecraft; the first three planets found by Kepler were used as tests, and had already been discovered.〔 Kepler-5b was presented to the public on January 4, 2010 at the 215th meeting of the American Astronomical Society in Washington, D.C., along with planets around Kepler-4, Kepler-6, Kepler-7, and Kepler-8.
Kepler-5b's initial discovery by Kepler was re-examined by scientists at the W.M. Keck Observatory at Mauna Kea, Hawaii; the McDonald Observatory in west Texas; the Palomar and Lick Observatories in California; the MMT, WIYN, and Whipple Observatories in Arizona; and the Roque de los Muchachos Observatory in the Canary Islands.
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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