Kepler-20
Imaginary Picture of Star Kepler-20
Star Name : Kepler-20
Alternate Name :
Star Distance (LY/pc): 945.8524 (LY) 290.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.9440 (Rsun, estimated)
Stellar Mass (Msun): 0.9120 (Msun/observed) 0.9120 (Msun/estimated)
Spectral type : G8
Metalicity : 0.0200
Absolute Magnitude : 5.19
Apparent Magnitude : 12.50
Right Ascension(RA) : 287.70000
Declination(DEC) : 42.33861
  • This is the Kepler-20 . The star Kepler-20 islocated about 945.9 light-years (290.0 pc) away from our Solar System.
  • The star Kepler-20 has apparent magnitude of 12.5, with absolute magnitude of 5.2.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5466 with its spectral types of G8
  • Number of Extrasolar Planets : 6
  • Name of the 1 Planet Kepler-20 b radius 0.166700 mass 0.030500 orbital distance 0.046300
  • Name of the 2 Planet Kepler-20 c radius 0.271800 mass 0.040120 orbital distance 0.094900
  • Name of the 3 Planet Kepler-20 d radius 0.244800 mass 0.031680 orbital distance 0.350600
  • Name of the 4 Planet Kepler-20 e radius 0.077200 mass 0.009700 orbital distance 0.063900
  • Name of the 5 Planet Kepler-20 f radius 0.089480 mass 0.045000 orbital distance 0.139600
  • Name of the 6 Planet Kepler-20 g radius 0.230450 mass 0.062800 orbital distance 0.205500
    (Illustration of the Kepler-20's Planetary System)



    The Star Kepler-20 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.611 AU ( 91404875.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.845 AU ( 126345424.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.287 AU ( 192522467.4 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.894 AU ( 283305244.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-20)



    Kopparapu's Recent Venus for Star Kepler-20 distance : 0.645 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-20 distance : 0.817 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-20 distance : 0.789 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-20 distance : 0.865 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-20 distance : 1.456 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-20 distance : 1.535 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-20)



  • Original Kopparapu Recent Venus for Star Kepler-20 distance : 0.642 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-20 distance : 0.840 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-20 distance : 0.850 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-20 distance : 1.481 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-20 distance : 1.540 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-20)



    (Position in Stellar Map of star Kepler-20 )



    (Zoomed position in Stellar Map of star Kepler-20 (zoom level 3))