Astronomy:Kepler-155c
Kepler 155c is an exoplanet in orbit around a K-type star 957 light-years away.[1]
Properties
Mass and radius
Kepler 155c is a Neptune-like planet with a mass of 5.65 Earth masses and a radius of 0.2 Jupiters (2.24 Earths.)[1] It has a density about half that of the Earth and a gravity of 1.126 Earth gravities.
Orbit
Kepler 155c orbits its star every 52.7 days at 0.242 AU. It has a low eccentricity.[1]
Star
Kepler 155 is a K-type main sequence star 957 light-years from Earth.[1] It is host to at least two planets, Kepler 155b and 155c.[2] The star has a temperature of 4508 K, a mass of 0.677 solar masses, and a radius 62% that of the Sun. Kepler 155's metallicity is similar to that of the Sun, at -0.04.[3]
Habitability
Kepler 155c is in the inner habitable zone of its star.[4] It is likely tidally locked due to its close stellar orbit and low eccentricity,[1] but since it is larger than Earth, if it is a water world, rather than an ice giant like NASA Exoplanet Exploration suggests, it could have an atmosphere that circulates air around the planet, making the planet habitable over a wide range of its regions.
Discovery
Kepler 155c was discovered in 2014 by the Kepler space telescope. Kepler used the transit method to find Kepler 155c.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "Exoplanet-catalog". https://exoplanets.nasa.gov/exoplanet-catalog/1749/kepler-155-c/.
- ↑ 2.0 2.1 "List of exoplanets discovered using the Kepler space telescope" (in en), Wikipedia, 2021-05-02, https://en.wikipedia.org/w/index.php?title=List_of_exoplanets_discovered_using_the_Kepler_space_telescope&oldid=1021017935, retrieved 2021-05-04
- ↑ "TEPCat: Kepler-155c". https://www.astro.keele.ac.uk/jkt/tepcat/planets/Kepler-155c.html.
- ↑ "Open Exoplanet Catalogue - Kepler-155 c". http://www.openexoplanetcatalogue.com/planet/Kepler-155%20c/.
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