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Kepler-68c is an Earth-sized planet orbiting the star Kepler 68 in the constellation of Cygnus. It was discovered by planetary-transit methods by the Kepler space telescope in February 2013. It has a mass of 4.8Template:± times that of Earth (0.015 MJ)[1] and a radius of 0.953Template:± Earth radii. It has an orbital period of 9.605085 days at a distance of about 0.09059 AU from its star. Relatively wide constraints on Kepler-68c's mass are the result lack of detection of the planet through radial-velocity and transit-timing-variation methods.[2]

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ReferencesEdit

  1. Gilliland, Ronald L.. Kepler-68: Three Planets, One With a Density Between That of Earth and Ice Giants. Cornell University. Retrieved on 28 February 2013.
  2. Nasa. Kepler Discoveries. Nasa.gov. Retrieved on 28 February 2013.

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