From Wikipedia, the free encyclopedia
Jump to: navigation, search
Exoplanet List of exoplanets
Parent star
Star Kepler-19
Constellation Cygnus
Right ascension (α) 19h 21m 41.002s[1]
Declination (δ) +37° 51′ 06.42″[1]
Apparent magnitude (mV) 12.04 ± 0.17[2]
Mass (m) 0.936 ± 0.040[3] M
Radius (r) 0.859 ± 0.018[3] R
Temperature (T) 5544 ± 20[4] K
Age 1.9 ± 1.7[3] Gyr
Orbital elements
Semi-major axis (a) 0.085[5] AU
Orbital period (P) 9.2869944 ± 0.0000088[3] d
Inclination (i) 89.94+0.06
Time of transit (Tt) 2454959.70597[3] JD
Physical characteristics
Mass (m) 8.4 ± 1.6[4] M
Radius (r) 2.209 ± 0.048[3] RJ
Density (ρ) 4.32 ± 0.87[4] g cm−3
Discovery information
Discovery date 2 February 2011
Discoverer(s) William J. Borucki et al.[6]
Discovery method Transit method
Other detection methods Transit-timing variation
Discovery status Confirmed
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

Kepler-19b is a planet orbiting around the star Kepler-19.[3] The planet has an orbital period of 9.3 days,[7] with an estimated radius of roughly 2.2 times that of the Earth, with a mass around 8.4 times that of the Earth.[5] It is one of two planets orbiting Kepler-19.[3]

See also[edit]


  1. ^ a b Cutri, R. M.; et al. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. 2246. Bibcode:2003yCat.2246....0C. 
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. 
  3. ^ a b c d e f g h i 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. Bibcode:2011ApJ...743..200B. arXiv:1109.1561Freely accessible. doi:10.1088/0004-637X/743/2/200. 
  4. ^ a b c Malavolta, L.; 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. Bibcode:2017AJ....153..224M. arXiv:1703.06885Freely accessible. doi:10.3847/1538-3881/aa6897. 
  5. ^ a b "Kepler-19 b". The Extrasolar Planets Encyclopaedia. Retrieved 30 April 2017. 
  6. ^ 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: 19. Bibcode:2011ApJ...736...19B. arXiv:1102.0541Freely accessible. doi:10.1088/0004-637X/736/1/19. 
  7. ^ "Kepler Discoveries". Retrieved 2013-02-28.