Kepler-186

Kepler-186[1]

Kepler-186 is indicated by the red circle
(2MASS J band image)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cygnus
Right ascension 19h 54m 36.6535s[2]
Declination +43° 57′ 18.026″[2]
Apparent magnitude (V) 15.29[3]
Characteristics
Evolutionary stage Main sequence
Spectral type M1V[4]
Astrometry
Proper motion (μ) RA: 2.171(18) mas/yr[2]
Dec.: −4.363(20) mas/yr[2]
Parallax (π)5.6336 ± 0.0169 mas[2]
Distance579 ± 2 ly
(177.5 ± 0.5 pc)
Details
Mass0.544 ± 0.02[4] M☉
Radius0.523 ± 0.02[4] R☉
Luminosity (bolometric)0.055 +0.011
−0.006[4] L☉
Temperature3755 ± 90[4] K
Metallicity [Fe/H]−0.26 ± 0.12[4] dex
Rotation34.404±0.075 days[5]
Age4.0 ± 0.6[4] Gyr
Other designations
KIC 8120608, KOI-571,
2MASS J19543665+4357180, Gaia DR2 2079000330051813504
Database references
SIMBADdata

Kepler-186 is a main-sequence M1-type dwarf star, located 177.5 parsecs (579 light years) away in the constellation of Cygnus. The star is slightly cooler than the sun, with roughly half its metallicity. It is known to have five planets, including the first Earth-sized world discovered in the habitable zone: Kepler-186f.[6] The star hosts four other planets discovered so far, though they all orbit interior to the habitable zone.

  1. ^ SIMBAD, KIC8120608
  2. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Souto2017 was invoked but never defined (see the help page).
  4. ^ a b c d e f g "Kepler-186 f". NASA Exoplanet Archive. Retrieved 19 July 2016.
  5. ^ Cite error: The named reference McQuillan2013 was invoked but never defined (see the help page).
  6. ^ 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. (2014-04-18). "An Earth-Sized Planet in the Habitable Zone of a Cool Star". Science. 344 (6181): 277–280. arXiv:1404.5667. Bibcode:2014Sci...344..277Q. doi:10.1126/science.1249403. PMID 24744370. S2CID 1892595. free version = http://www.nasa.gov/sites/default/files/files/kepler186_main_final.pdf