Imaginary Picture of Kepler-242 b
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Exoplanet Name : Kepler-242 b
Alternate Name :
Radius (Rjup / Re): 0.2330 (Rjup) 2.6117 (Rearth)
Mass (Mjup / Me): 0.0203 (Mjup) 6.4425 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0750 (AU) 0.0750 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0225
Orbital Period(Observed/Estimated) 8.20 (Days Obs.) 8.97 (Days Est.)
Star Radiation at Atmospheric Boundary: 100031.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 793.7 (K)
Blackbody T 0.3(K) 745.4 (K)
Blackbody T 0.7(K) 603.1 (K)
Tidally Locked Blackbody T 0.1(K) 943.9 (K)
Tidally Locked Blackbody T 0.3(K) 886.4 (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-242
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5020 (K)
Spectral type : K2
Metalicity : 0.1
Absolute Magnitude: 25.0
Apparent Magnitude: 13.8
Right Ascension(RA) 286.5657
Declination (DEC) 41.8084
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
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-242+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-242%20b/
Kepler-242 b
Kepler-242 b

  • Kepler-242 b is an exoplanet orbiting the star Kepler-242. Its discovery was publicly announced on 2014.
  • The host star Kepler-242 has apparent magnitude of 13.8, with absolute magnitude of 25.0.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5020 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-242 b orbits around the star Kepler-242 every 8.2 days with its orbital distance of 0.07 AU ( 11219840.3 km)
  • (Projected orbit of Kepler-242 b around its host star Kepler-242)


  • The Star Kepler-242 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.464 AU ( 69419978.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.641 AU ( 95956551.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.977 AU ( 146216549.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.438 AU ( 215164057.4 km)
  • Radiation at Planetary Boundary of Kepler-242 b : 100031.09 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-242)



  • Kopparapu Recent Venus for Star Kepler-242 distance : 0.502 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-242 distance : 0.635 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-242 distance : 0.613 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-242 distance : 0.673 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-242 distance : 1.150 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-242 distance : 1.213 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-242)



  • Original Kopparapu Recent Venus for Star Kepler-242 distance : 0.496 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-242 distance : 0.654 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-242 distance : 0.657 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-242 distance : 1.169 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-242 distance : 1.216 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-242)



    (Position in Stellar Map of star Kepler-242 and its Exoplanet Kepler-242 b)



    (Zoomed position in Stellar Map of star Kepler-242 and its Exoplanet Kepler-242 b (zoom level 3))