Kapteyn c

Kapteyn c is an exoplanet orbiting the nearby Red dwarf star Kapteyn's Star. It has a mass of about ≥7.0M⊕, a semimajor axis of ~0.311AU and an orbital eccentricity of 0.23±0.1. It is beyond the host star's habitable zone.[3][4] It has been described by its discoverers as a cold Super-Earth.[5]

Kapteyn c[1][2]
Discovery
Discovery date2014
Radial Velocity
Orbital characteristics
0.311 AU (46,500,000 km)
StarKapteyn's star
Physical characteristics
Mass7 M⊕

    References
    1. Anglada-Escude, G.; et al. (8 July 2014). "Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf". Monthly Notices of the Royal Astronomical Society: Letters. 443: L89–L93. arXiv:1406.0818. Bibcode:2014MNRAS.443L..89A. doi:10.1093/mnrasl/slu076. Retrieved 10 January 2015.
    2. Wall, Mike (3 June 2014). "Found! Oldest Known Alien Planet That Might Support Life". Space.com. Retrieved 10 January 2015.
    3. David Dickinson, Discovered: Two New Planets for Kapteyn’s Star (June 4, 2014).
    4. Kapteyn's Star at SolStations.com.
    5. Guillem Anglada-Escudé, Pamela Arriagada, Mikko Tuomi, Mathias Zechmeister, James S. Jenkins, Aviv Ofir, Stefan Dreizler, Enrico Gerlach, Chris J. Marvin, Ansgar Reiners, Sandra V. Jeffers, R. Paul Butler, Steven S. Vogt, Pedro J. Amado, Cristina Rodríguez-López, Zaira M. Berdiñas, Julian Morin, Jeff D. Crane, Stephen A. Shectman, Ian B. Thompson, Matías Díaz, Eugenio Rivera, Luis F. Sarmiento, Hugh R.A. Jones, Two planets around Kapteyn's star : a cold and a temperate super-Earth orbiting the nearest halo red-dwarf.(Cornell University 3 June 2014).
    Comparison with Sun, Jupiter and Earth.


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