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Kepler-19b is a planet orbiting around the star Kepler-19.[3] The planet has an orbital period of 9.3 days,[5] with an estimated radius of roughly 2.2 times that of the Earth, with a mass around 8.4 times that of the Earth.[2] It is one of three planets orbiting Kepler-19.[4]

Kepler-19b
Discovery
Discovered byWilliam J. Borucki et al.[1]
Discovery date2 February 2011
Detection method
Transit method
Orbital characteristics
Semi-major axis
0.085 AU (12,700,000 km)[2]
Orbital period (sidereal)
9.2869944 ± 0.0000088[3] d
Inclination89.94+0.06
−0.44[3]
StarKepler-19
Physical characteristics
Mean radius
2.209 ± 0.048[3] REarth
Mass8.4 ± 1.6[4] MEarth
Mean density
4.32 ± 0.87 g/cm3 (0.156 ± 0.031 lb/cu in)[4]

    See also



    References


    1. Borucki, W. J.; et al. (2011). "Characteristics of Planetary Candidates Observed by Kepler. II. Analysis of the First Four Months of Data". The Astrophysical Journal. 736 (1): 19. arXiv:1102.0541. Bibcode:2011ApJ...736...19B. doi:10.1088/0004-637X/736/1/19.
    2. "Kepler-19 b". The Extrasolar Planets Encyclopaedia. Retrieved 30 April 2017.
    3. Ballard, S.; et al. (2011). "The Kepler-19 System: A Transiting 2.2 R🜨 Planet and a Second Planet Detected Via Transit Timing Variations". The Astrophysical Journal. 743 (2): 200. arXiv:1109.1561. Bibcode:2011ApJ...743..200B. doi:10.1088/0004-637X/743/2/200.
    4. Malavolta, Luca; et al. (2017). "The Kepler-19 System: A Thick-envelope Super-Earth with Two Neptune-mass Companions Characterized Using Radial Velocities and Transit Timing Variations". The Astronomical Journal. 153 (5). 224. arXiv:1703.06885. Bibcode:2017AJ....153..224M. doi:10.3847/1538-3881/aa6897.
    5. "Kepler Discoveries". Kepler.nasa.gov. Archived from the original on 2010-05-27. Retrieved 2013-02-28.


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