Kapteyn c

Kapteyn c[1][2]
Exoplanet List of exoplanets
[[Image:|300px]]
Orbit of Kapteyn c
Parent star
Star Kapteyn's star
Right ascension (α) 05h 11m 40.58s
Declination (δ) +45° 01′ 06.3″
Apparent magnitude (mV) 8.8
Distance12.8 ly
(3.92±0.01 pc)
Mass (m) 0.281±0.014 M☉
Radius (r) 0.291±0.025 R☉
Temperature (T) 3550±50 K
Metallicity [Fe/H] -0.89
Age 8.0±7.5 Gyr
Physical characteristics
Mass(m)7 M⊕
Orbital elements
Semi-major axis(a) 0.311 AU
Discovery information
Discovery date 2014
Discoverer(s)
Discovery method Radial Velocity
Discovery status Published refereed article
Other designations
Kapteyn c; HIP 24186 c; 2MASS J05114046-4501051 c; TYC 8078-01749-1 c; IRAS 05100-4502 c; WISE J051146.81-450204.5 c; CPD-44 612 c; SAO 217223 c; GJ 191 c; VZ Pic c; Kapteyn's star c; LHS 29 c; HD 33793 c; CD-45 1841 c
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

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]

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". Oxford Journals. 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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