Kepler-186e

Kepler-186e[1][2]
Discovery
Discovery siteKepler Space Observatory
Discovery date17 April 2014
Transit
Orbital characteristics
0.11–0.1216 AU
Eccentricity<0.24
22.407704 d
Inclination88.24
StarKepler-186
Physical characteristics
1.27±0.15 R🜨
Mass~2.29 ME
TemperatureTeq: 323 K (50 °C; 122 °F)

Kepler-186e (also known by its Kepler Object of Interest designation KOI-571.04) is a confirmed exoplanet orbiting the red dwarf star Kepler-186, approximately 582 light years away from Earth in the constellation of Cygnus. It is near the optimistic habitable zone but probably not in it, possibly making it have a runaway greenhouse effect, like Venus. 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. Four additional planets orbiting the star (all modestly larger than Earth) were also discovered.

  1. ^ Quintana, E. V.; Barclay, T.; Raymond, S. N.; Rowe, J. F.; Bolmont, E.; Caldwell, D. A.; Howell, S. B.; Kane, S. R.; Huber, D.; Crepp, J. R.; Lissauer, J. J.; Ciardi, D. R.; Coughlin, J. L.; Everett, M. E.; Henze, C. E.; Horch, E.; Isaacson, H.; Ford, E. B.; Adams, F. C.; Still, M.; Hunter, R. C.; Quarles, B.; Selsis, F. (18 April 2014). "An Earth-Sized Planet in the Habitable Zone of a Cool Star" (PDF). Science. 344 (6181): 277–280. arXiv:1404.5667. Bibcode:2014Sci...344..277Q. doi:10.1126/science.1249403. PMID 24744370. S2CID 1892595.
  2. ^ Johnson, Michele; Harrington, J.D. (17 April 2014). "NASA's Kepler Discovers First Earth-Size Planet In The 'Habitable Zone' of Another Star". NASA. Archived from the original on 17 April 2014.