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| mean_radius = 0.96 (± 0.12)<ref name="Dawson"/> {{Jupiter radius|link=y}} |
| mean_radius = 0.96 (± 0.12)<ref name="Dawson"/> {{Jupiter radius|link=y}} |
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| mass = 2.5 (± 0.3)<ref name="Dawson">{{Cite journal|arxiv=1405.5229 |title= Large eccentricity, low mutual inclination: The three-dimensional architecture of a hierarchical system of giant planets|journal= The Astrophysical Journal|volume= 791|issue= 2|pages= 89|last1= Dawson|first1= Rebekah I.|author2= John Asher Johnson|last3= Fabrycky|first3= Daniel C.|last4= Foreman-Mackey|first4= Daniel|last5= Murray-Clay|first5= Ruth A.|last6= Buchhave|first6= Lars A.|last7= Cargile|first7= Phillip A.|last8= Clubb|first8= Kelsey I.|last9= Fulton|first9= Benjamin J.|last10= Hebb|first10= Leslie|last11= Howard|first11= Andrew W.|last12= Huber|first12= Daniel|last13= Shporer|first13= Avi|last14= Valenti|first14= Jeff A.|year= 2014|doi= 10.1088/0004-637X/791/2/89|bibcode = 2014ApJ...791...89D }}</ref> {{Jupiter mass|link=y}} |
| mass = 2.5 (± 0.3)<ref name="Dawson">{{Cite journal|arxiv=1405.5229 |title= Large eccentricity, low mutual inclination: The three-dimensional architecture of a hierarchical system of giant planets|journal= The Astrophysical Journal|volume= 791|issue= 2|pages= 89|last1= Dawson|first1= Rebekah I.|author2= John Asher Johnson|last3= Fabrycky|first3= Daniel C.|last4= Foreman-Mackey|first4= Daniel|last5= Murray-Clay|first5= Ruth A.|last6= Buchhave|first6= Lars A.|last7= Cargile|first7= Phillip A.|last8= Clubb|first8= Kelsey I.|last9= Fulton|first9= Benjamin J.|last10= Hebb|first10= Leslie|last11= Howard|first11= Andrew W.|last12= Huber|first12= Daniel|last13= Shporer|first13= Avi|last14= Valenti|first14= Jeff A.|year= 2014|doi= 10.1088/0004-637X/791/2/89|bibcode = 2014ApJ...791...89D |s2cid= 29630098}}</ref> {{Jupiter mass|link=y}} |
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| single_temperature = {{convert|505|K|C F}} |
| single_temperature = {{convert|505|K|C F}} |
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Discovery | |
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Discovered by | Kepler spacecraft |
Discovery date | 2012 (dubious) 12 June 2014 (confirmed)[1] |
Transit method[1] | |
Orbital characteristics | |
0.37 (± 0.007)[1] AU | |
Eccentricity | 0.833 (± 0.013)[1] |
69.7546 (± 0.0007)[1] d | |
Inclination | 88.95+0.14 −0.17[1] |
Star | Kepler-419 (KOI-1474) |
Physical characteristics | |
0.96 (± 0.12)[1] RJ | |
Mass | 2.5 (± 0.3)[1] MJ |
Temperature | 505 K (232 °C; 449 °F) |
Kepler-419b (also known by its Kepler Object of Interest designation KOI-1474.01) is a hot Jupiter exoplanet orbiting the star Kepler-419, the outermost of two such planets discovered by NASA's Kepler spacecraft. It is located about 3,400 light-years (1040 parsecs from Earth in the constellation Cygnus.
Kepler-419b is a hot Jupiter, an exoplanet that has a radius and mass near that of the planet Jupiter, but with an extremely high temperature. It has a temperature of 505 K (232 °C; 449 °F).[2] It has a mass of 2.5 MJ and a radius of 0.96 RJ.
The planet orbits an (F-type) star named Kepler-419. The star has a mass of 1.39 M☉ and a radius 1.75 R☉. It has a surface temperatures of 6430 K and is 2.8 billion years old. In comparison, the Sun is about 4.6 billion years old[3] and has a surface temperature of 5778 K.[4]
The star's apparent magnitude, or how bright it appears from Earth's perspective, is 13. It is too dim to be seen with the naked eye.
Kepler-419c orbits its host star with 270% of the Sun's luminosity (2.7 L☉) about every 67 days at a distance of 0.37 AU (close to the orbital distance of Mercury from the Sun, which is 0.38 AU). It has a highly eccentric orbit, with an eccentricity of 0.833.
In 2009, NASA's Kepler spacecraft was completing observing stars on its photometer, the instrument it uses to detect transit events, in which a planet crosses in front of and dims its host star for a brief and roughly regular period of time. In this last test, Kepler observed 50000 stars in the Kepler Input Catalog, including Kepler-419, the preliminary light curves were sent to the Kepler science team for analysis, who chose obvious planetary companions from the bunch for follow-up at observatories. Observations for the potential exoplanet candidates took place between 13 May 2009 and 17 March 2012. After observing the respective transits, the first planet, Kepler-419b, was announced.[1]
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