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Kepler-186b

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Kepler-186b
Orbital characteristics
StarKepler-186
Physical characteristics
Mass0.544 (± 0.02)[1]

|period=3.8867907[1]|period_year=0.010641|orbital velocity=|semimajor=0.0343 (± 0.0046)[1]|inclination=83.56 |discovery_date=26 February 2014|discoverers=Elisa V. Quintana, Thomas Barclay, Sean N. Raymond, Jason F. Rowe, Emeline Bolmont, Douglas A. Caldwell, Steve B. Howell, Stephen R. Kane, Daniel Huber, Justin R. Crepp, Jack J. Lissauer, David R. Ciardi, Jeffrey L. Coughlin, Mark E. Everett, Christopher E. Henze, Elliott Horch, Howard Isaacson, Eric B. Ford, Fred C. Adams, Martin Still, Roger C. Hunter, Billy Quarles, and Franck Selsis.|discovery_site=Kepler Space Observatory|discovery_method=Transit|detection_methods=|discovery_status=Published }} Kepler 186b (also known by its Kepler Object of Interest name KOI-571.03) is an exoplanet located about 500 light-years away from Earth. Kepler-186b is orbiting a red dwarf known as Kepler-186, named after the space telescope that found it.[3] NASA's Kepler Spacecraft detected Kepler-186b using the transit method. Kepler-186b was discovered on February 26, 2014. The discovery paper was written by Elisa V. Quintana, Jason F. Rowe, and many others.[4] Researchers at the NASA Ames Research Center have confirmed with 99% assurance that Kepler-186b is a planet.[5] The planet's many aliases includes KOI-571 b, KOI-571.03, KIC 8120608 b, KIC 8120608.03, 2MASS J19543665+4357180 b, and WISE J195436.65+435717.9 b.[1]

 
Kepler-186b along with the other 4 planets in its planetary system. Kepler-186b is the closest one to the star.

Host Star

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Kepler-186 has a planetary system consisting of 5 planets including Kepler-186b, Kepler-186c, Kepler-186d, Kepler-186e, and Kepler-186f.[5] This system is located in the Cygnus constellation.[4] The star has a solar mass of 0.544 (± 0.02) and a solar radius of 0.523 (± 0.02). The star also has a temperature of 3755 (± 90) Kelvins and is about 4.0 billion years old.[1]

Characteristics

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Kepler-186 planetary system and the solar system.

Habitability

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Kepler-186b is the innermost planet of its system, and thus not suitable for life due to its heat. The temperature of the planet has not yet been measured but its host star, Kepler-186, has a temperature of 3755 (± 90) Kelvins.

Orbital Elements

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Kepler-186b is about 0.0343 (± 0.0046) astronomical units, or about 5,131,206.97 (± 688,150.205) kilometers, away from its host star.[1] One year on the planet is approximately 3.89 earth days long due to the closeness to its star, Kepler-186.[3] Kepler-186b is an Earth-sized planet that is 1.07 (±0.12) times the radius of Earth.[1]

References

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  1. ^ a b c d e f g h i j k l "Kepler-186 b". NASA Exoplanet Archive. Retrieved 29 December 2016.
  2. ^ "Kepler-186 b". www.exoplanetkyoto.org. Retrieved 15 February 2018.
  3. ^ a b "The Extrasolar Planet Encyclopaedia — Kepler-186 b". exoplanet.eu. Retrieved 29 December 2016.
  4. ^ a b "Kepler-186 b". www.exoplanetkyoto.org. Retrieved 15 February 2018.
  5. ^ a b "Open Exoplanet Catalogue - Kepler-186 b". www.openexoplanetcatalogue.com. Retrieved 2018-02-20.
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