Kepler-47

Kepler-47 is a binary star system in the constellation Cygnus located about away from Earth. The stars have three exoplanets, all of which orbit both stars at the same time, making this a circumbinary system. The first two planets announced are designated Kepler-47b and Kepler-47c, and the third, later discovery is Kepler-47d. Kepler-47 is the first circumbinary multi-planet system discovered by the Kepler mission. The outermost of the planets is a gas giant orbiting within the habitable zone of the stars. Because most larger stars (the size of the sun or greater) are binary, the discovery tha

Wikidata facts

Distance from Earth: 1055.3
Radius: 0.964
Mass: 1.043
Image: Artist's concept illustrates Kepler-47, the first transiting circumbinary system.jpg

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catalog code: KOI-7273
Commons category: Kepler-47
surface gravity: 25015
effective temperature: 5636
parallax: 0.954
apparent magnitude: 15.150087
metallicity: -0.065
luminosity: 0.71805376
right ascension component of proper motion: -3.383
declination component of proper motion: -10.212
right ascension: 295.29790966793
declination: 46.92047426008
radial velocity: 11.3854
stellar rotational velocity: 8.178

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Article

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Contents

Nomenclature and history
Stellar characteristics
Planetary system
Kepler-47b
Kepler-47c
Kepler-47d
See also
References

A group of astronomers led by Jerome Orosz at San Diego State University, including astronomers from Tel-Aviv University in Israel, discovered the planetary system via NASA's Kepler space telescope in 2012. In November 2013, evidence of a third planet orbiting between the planets b and c, Kepler-47d, was announced. Later analyses of transit data from the Kepler space telescope confirmed the existence of Kepler-47d.