19h41m40.3s, +51° 11′ 05.15″|
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| dec= {{DEC|+51|11|05.15}} |
| dec= {{DEC|+51|11|05.15}} |
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| constell=[[Cygnus (constellation)|Cygnus]] |
| constell=[[Cygnus (constellation)|Cygnus]] |
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| app_mag = 13<ref name=kic>{{cite journal|bibcode= 2009yCat.5133....0K|title= VizieR Online Data Catalog: Kepler Input Catalog (Kepler Mission Team, 2009)|journal= VizieR On-line Data Catalog: V/133. Originally published in: 2009yCat.5133....0K|volume= 5133|author1= Kepler Mission Team|year= 2009}}</ref> |
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| app_mag = 14<ref name=EPE>{{cite web|url=http://exoplanet.eu/catalog/kepler-419_c/|title=Notes for planet Kepler-419 c|work=[[The Extrasolar Planets Encyclopedia]]|accessdate=August 8, 2016}}</ref> |
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| dist_ly = |
| dist_ly = 2544 |
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| dist_pc = 780<ref name=dawson2012>{{cite journal|bibcode=2012ApJ...761..163D|arxiv=1206.5579|title=The Photoeccentric Effect and Proto-hot Jupiters. II. KOI-1474.01, a Candidate Eccentric Planet Perturbed by an Unseen Companion|journal=The Astrophysical Journal|volume=761|issue=2|pages=163|author1=Dawson|first1=Rebekah I.|last2=Johnson|first2=John Asher|last3=Morton|first3=Timothy D.|last4=Crepp|first4=Justin R.|last5=Fabrycky|first5=Daniel C.|last6=Murray-Clay|first6=Ruth A.|last7=Howard|first7=Andrew W.|year=2012|doi=10.1088/0004-637X/761/2/163}}</ref> |
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| dist_pc = >920 |
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| class = F?V<ref name=" |
| class = F?V<ref name="Dawson"/> |
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| mass = 1.39 (± 0.08)<ref name="Dawson"/> |
| mass = 1.39 (± 0.08)<ref name="Dawson"/> |
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| radius = 1.75 (± 0.08)<ref name="Dawson"/> |
| radius = 1.75 (± 0.08)<ref name="Dawson"/> |
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{{Planetbox end}} |
{{Planetbox end}} |
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'''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)|Kepler spacecraft]]. It is located |
'''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)|Kepler spacecraft]]. It is located about 2,544 [[light-year]]s (780 [[parsec]]s, or nearly {{val|2.4068|e=16}} [[km]]) from Earth in the constellation [[Cygnus (constellation)|Cygnus]].<ref name="Dawson"/> The exoplanet was found by using the [[transit method], in which the dimming effect that a planet causes as it crosses in front of its star is measured. |
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== Characteristics == |
== Characteristics == |
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=== Orbit === |
=== Orbit === |
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Kepler-419c orbits its host star with |
Kepler-419c orbits its host star with 270% of the Sun's luminosity (2.7 {{solar luminosity}}) about every 67 days at a distance of 0.37 [[astronomical unit|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. |
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==Discovery== |
==Discovery== |
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Template:Planetbox begin Template:Planetbox star Template:Planetbox character Template:Planetbox orbit Template:Planetbox discovery Template:Planetbox catalog Template:Planetbox reference Template:Planetbox end
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 2,544 light-years (780 parsecs, or nearly 2.4068×1016 km) from Earth in the constellation Cygnus.[1] The exoplanet was found by using the [[transit method], in which the dimming effect that a planet causes as it crosses in front of its star is measured.
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 14. 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.
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