Kepler-442

Kepler-442
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra
Right ascension 19h 01m 27.9743s[1]
Declination +39° 16′ 48.224″[1]
Apparent magnitude (V) 14.976[2]
Characteristics
Evolutionary stage Main sequence
Spectral type K5V[3][4]
Astrometry
Proper motion (μ) RA: 7.784(18) mas/yr[1]
Dec.: 1.882(19) mas/yr[1]
Parallax (π)2.7269 ± 0.0165 mas[1]
Distance1,196 ± 7 ly
(367 ± 2 pc)
Absolute magnitude (MV)7.73+0.28
−0.25[2]
Details
Mass0.61 ± 0.03[2] M☉
Radius0.60 ± 0.02[2] R☉
Luminosity (bolometric)0.117[5] L☉
Luminosity (visual, LV)0.069[nb 1] L☉
Temperature4402 ± 100[2] K
Metallicity [Fe/H]−0.37 ± 0.10[2] dex
Age2.9+8.1
−0.2[2] Gyr
Other designations
Gaia DR2 2100258047339711488, KOI-4742, KIC 4138008, 2MASS J19012797+3916482[6]
Database references
SIMBADdata

Kepler-442 is a K-type main-sequence star approximately 1,196 light years from Earth in the constellation Lyra. It is located within the field of vision of the Kepler spacecraft, the satellite that NASA's Kepler Mission used to detect planets that may be transiting their stars. On January 6, 2015, along with the stars of Kepler-438 and Kepler-440, it was announced that the star has an extrasolar planet (a super-Earth) orbiting within the habitable zone, named Kepler-442b.[2]

  1. ^ a b c d Cite error: The named reference Gaia DR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h Torres, Guillermo; Kipping, David M.; Fressin, Francois; Caldwell, Douglas A.; Twicken, Joseph D.; Ballard, Sarah; Batalha, Natalie M.; Bryson, Stephen T.; Ciardi, David R.; Henze, Christopher E.; Howell, Steve B.; Isaacson, Howard T.; Jenkins, Jon M.; Muirhead, Philip S.; Newton, Elisabeth R.; Petigura, Erik A.; Barclay, Thomas; Borucki, William J.; Crepp, Justin R.; Everett, Mark E.; Horch, Elliott P.; Howard, Andrew W.; Kolbl, Rea; Marcy, Geoffrey W.; McCauliff, Sean; Quintana, Elisa V. (2015). "Validation of 12 Small Kepler Transiting Planets in the Habitable Zone". The Astrophysical Journal. 800 (2): 99. arXiv:1501.01101. Bibcode:2015ApJ...800...99T. doi:10.1088/0004-637X/800/2/99. S2CID 8512655.
  3. ^ Cite error: The named reference FraserCainAgain was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference ExoplanetNASA was invoked but never defined (see the help page).
  5. ^ Kepler 442b hpcf.upr.edu
  6. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).


Cite error: There are <ref group=nb> tags on this page, but the references will not show without a {{reflist|group=nb}} template (see the help page).