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Kepler-68b is an exoplanet orbiting the Sun-like star Kepler-68 in the constellation of Cygnus. Discovered by planetary-transit methods by the Kepler space telescope in February 2013, it has a radius of 2.31 ± 0.07 that of Earth and a density of 2.46–4.3 g/cm. It has an orbital period of 5.398763 days at a distance of about 0.0617 AU from its star. Doppler measurements were made to determine its mass to be 5.79 times that of Earth (0.026 M_J).

With a density of 2.60±0.74/cm it has physical characteristics of both a super-Earth and a mini-Neptune.<ref name=Nasa>

See also

• List of planets discovered by the Kepler spacecraft

References

1. Gilliland, Ronald L. "Kepler-68: Three Planets, One With a Density Between That of Earth and Ice Giants". Cornell University. Retrieved 28 February 2013.
2. http://astro.berkeley.edu/~gmarcy/22kois.pdf

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