Kepler-419b
{{Short description|Hot Jupiter orbiting Kepler-419}}
{{Infobox planet
| name = Kepler-419b
| discoverer = Kepler spacecraft
| discovered = 2012 (dubious)
12 June 2014 (confirmed)
| discovery_method = Transit method
| apsis = astron
| semimajor = 0.37 (± 0.007) AU
| eccentricity = 0.833 (± 0.013)
| period = 69.7546 (± 0.0007) d
| inclination = {{val|88.95|0.14|0.17}}
| star = Kepler-419 (KOI-1474)
| mean_radius = 0.96 (± 0.12) {{Jupiter radius|link=y}}
| single_temperature = {{convert|505|K|C 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.
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 a much higher temperature. It has a temperature of {{convert|505|K|C F}}.[http://www.hpcf.upr.edu/~abel/phl/hec_plots/hec_orbit/hec_orbit_Kepler-419_b.png Kepler 419] hpcf.upr.edu It has a mass of 2.5 {{Jupiter mass}} and a radius of 0.96 {{Jupiter radius}}.
=Host star=
The planet orbits an (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 K and is 2.8 billion years old. In comparison, the Sun is about 4.6 billion years old{{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 |publisher=Universe Today |access-date=19 February 2011}} and has a surface temperature of 5778 K.{{cite web |url=http://www.universetoday.com/18092/temperature-of-the-sun/ |title=Temperature of the Sun |author=Fraser Cain |date=September 15, 2008 |publisher=Universe Today |access-date=19 February 2011}}
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.
=Orbit=
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 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 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 {{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.
References
{{reflist|refs=
}}
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 The NASA Exoplanet Archive.
- [http://exoplanets.org/detail/Kepler-419_b NASA – Kepler-419b] at The Exoplanet Data Explorer.
- [https://exoplanet.eu/catalog/kepler_419_b--1197/ NASA – Kepler-419b] at The Extrasolar Planets Encyclopaedia.
{{Exoplanets}}
{{Astrobiology}}
{{Extraterrestrial life}}
{{2014 in space}}
{{Portal bar|Astronomy|Biology}}
{{Sky|19|41|40.3|+|51|11|05.15}}
Category:Exoplanets discovered by the Kepler space telescope
Category:Exoplanets discovered in 2014