| 词条 | Kapteyn c |
| 释义 |
| name = Kapteyn c[1][2] | caption = Orbit of Kapteyn c | discovered = 2014 | discovery_method = Radial Velocity | apsis = astron | semimajor = {{convert|0.311|AU|km|abbr=on}} | star = Kapteyn's star | mass = 7 {{Earth mass|link=y}} }}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] References1. ^{{cite journal |author=Anglada-Escude, G. |display-authors=etal |title=Two planets around Kapteyn's star: a cold and a temperate super-Earth orbiting the nearest halo red dwarf |url=http://mnrasl.oxfordjournals.org/content/443/1/L89 |date=8 July 2014 |journal=Oxford Journals |doi=10.1093/mnrasl/slu076 |accessdate=10 January 2015 |arxiv = 1406.0818 |bibcode = 2014MNRAS.443L..89A }} {{Nearest star systems|3}}{{Extrasolar-planet-stub}}2. ^{{cite web |last=Wall |first=Mike |title=Found! Oldest Known Alien Planet That Might Support Life |url=http://www.space.com/26115-oldest-habitable-alien-planet-kapteyn-b.html |date=3 June 2014 |work=Space.com |accessdate=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, [https://arxiv.org/abs/1406.0818, Two planets around Kapteyn's star : a cold and a temperate super-Earth orbiting the nearest halo red-dwarf]{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }}.(Cornell University 3 June 2014). 2 : Exoplanets in the habitable zone|Exoplanets discovered in 2014 |
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