Imaginary Picture of Kepler-239 c
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Exoplanet Name : Kepler-239 c
Alternate Name :
Radius (Rjup / Re): 0.2240 (Rjup) 2.5108 (Rearth)
Mass (Mjup / Me): 0.0195 (Mjup) 6.2107 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2680 (AU) 0.2680 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1539
Orbital Period(Observed/Estimated) 56.23 (Days Obs.) 58.91 (Days Est.)
Star Radiation at Atmospheric Boundary: 6008.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 392.9 (K)
Blackbody T 0.3(K) 369.0 (K)
Blackbody T 0.7(K) 298.6 (K)
Tidally Locked Blackbody T 0.1(K) 467.3 (K)
Tidally Locked Blackbody T 0.3(K) 438.8 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-239
Alternate Name :
Star Distance(LY) : 2114.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4939 (K)
Spectral type : K2
Metalicity : -0.0
Absolute Magnitude: 4.6
Apparent Magnitude: 13.7
Right Ascension(RA) 294.2021
Declination (DEC) 40.6634
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-239+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-239%20c/
Kepler-239 c
Kepler-239 c

  • Kepler-239 c is an exoplanet orbiting the star Kepler-239, located about 2114.0 light-years (648.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-239 has apparent magnitude of 13.7, with absolute magnitude of 4.6.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4939 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-239 c orbits around the star Kepler-239 every 56.2 days with its orbital distance of 0.27 AU ( 40092229.3 km)
  • (Projected orbit of Kepler-239 c around its host star Kepler-239)


  • The Star Kepler-239 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.406 AU ( 60794249.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.562 AU ( 84033540.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.856 AU ( 128048519.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.260 AU ( 188429006.1 km)
  • Radiation at Planetary Boundary of Kepler-239 c : 6008.19 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-239)



  • Kopparapu Recent Venus for Star Kepler-239 distance : 0.441 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-239 distance : 0.558 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-239 distance : 0.539 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-239 distance : 0.592 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-239 distance : 1.014 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-239 distance : 1.070 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-239)



  • Original Kopparapu Recent Venus for Star Kepler-239 distance : 0.436 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-239 distance : 0.575 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-239 distance : 0.577 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-239 distance : 1.031 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-239 distance : 1.072 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-239)



    (Position in Stellar Map of star Kepler-239 and its Exoplanet Kepler-239 c)



    (Zoomed position in Stellar Map of star Kepler-239 and its Exoplanet Kepler-239 c (zoom level 3))