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{{Short description|Hot Jupiter orbiting Kepler-419}}
{{Infobox planet
| name = Kepler-419b
<!-- DISCOVERY -->
| discovery_method = [[Transit method]]<ref name="Dawson" />▼
<!-- DESIGNATIONS -->
<!-- ORBITAL -->
| apsis = astron
| semimajor = 0.37 (± 0.007)<ref name="Dawson" /> [[astronomical unit|AU]]▼
| eccentricity = 0.833 (± 0.013)<ref name="Dawson" />▼
| period = 69.7546 (± 0.0007)<ref name="Dawson" /> [[day|d]]▼
| inclination = {{val|88.95|0.14|0.17}}<ref name="Dawson"/>▼
| star = [[Kepler-419]] (KOI-1474)▼
<!-- PHYS CHARS -->
| mass = 2.5 (± 0.3)<ref name="Dawson">{{Cite journal
<!-- ATMOSPHERE -->
<!-- NOTES -->
}}
'''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
▲| star = [[Kepler-419]] (KOI-1474)
| constell=[[Cygnus (constellation)|Cygnus]]▼
}}▼
▲| mass = 2.5 (± 0.3)<ref name="Dawson">{{Cite journal|last= |first= |author-link= |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|date= |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>
▲| radius = 0.96 (± 0.12)<ref name="Dawson"/>
▲| temperature = {{convert|505|K|C F}}
▲| semimajor = 0.37 (± 0.007)<ref name="Dawson" />
▲| eccentricity = 0.833 (± 0.013)<ref name="Dawson" />
▲| period = 69.7546 (± 0.0007)<ref name="Dawson" />
▲| inclination = {{val|88.95|0.14|0.17}}<ref name="Dawson"/>
▲| discovery_date = 2012 (dubious)<br>12 June 2014 (confirmed)<ref name="Dawson" />
▲| discoverers = ''[[Kepler (spacecraft)|Kepler]]'' spacecraft
▲| discovery_method = [[Transit method]]<ref name="Dawson" />
▲'''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.
▲== Characteristics ==
===Mass, radius and temperature===
Kepler-419b is a [[hot Jupiter]], an exoplanet that has a radius and mass near that of the planet [[Jupiter]], but with
===Host star===
The planet orbits an ([[Stellar classification#Class F|F-type]]) [[star]] named [[Kepler-419]]. The star has a mass of 1.39 {{Solar mass}} and a radius 1.75 {{Solar radius}}. It has a surface temperatures of 6430 [[Kelvin|K]] and is 2.8 billion years old. In comparison, the Sun is about 4.6 billion years old<ref>{{cite web |url=http://www.universetoday.com/18237/how-old-is-the-sun/ |title=How Old is the Sun? |author=Fraser Cain |date=16 September 2008
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 {{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.
==Discovery==
In 2009, [[NASA]]'s [[Kepler (spacecraft)|Kepler]] spacecraft was completing observing stars on its [[photometer]], the instrument it uses to detect [[transit method|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 {{val|50,000}} 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.<ref name="Dawson"/>
==References==
{{reflist
▲}}
==External links==
* [https://web.archive.org/web/20131105082102/http://www.nasa.gov/mission_pages/kepler/main/index.html NASA – Kepler Mission].
* [https://web.archive.org/web/20100527104316/http://kepler.nasa.gov/Mission/discoveries/ NASA – Kepler Discoveries – Summary Table].
* [http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=Kepler-419+b&type=CONFIRMED_PLANET NASA – Kepler-419b] at [[NASA Exoplanet Archive|The NASA Exoplanet Archive]].
* [http://exoplanets.org/detail/Kepler-419_b NASA – Kepler-419b] at [[Exoplanet Data Explorer|The Exoplanet Data Explorer]].
* [
{{Exoplanets}}
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{{Extraterrestrial life}}
{{2014 in space}}
{{
{{Sky|19|41|40.3|+|51|11|05.15}}
[[Category:Exoplanets discovered by the Kepler
[[Category:Giant planets]]
[[Category:Exoplanets discovered in 2014]]
[[Category:Transiting exoplanets]]
|
Discovery | |
---|---|
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 a much higher 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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