Kepler-331
Imaginary Picture of Star Kepler-331
Star Name : Kepler-331
Alternate Name :
Star Distance (LY/pc): 0.0000 (LY) 0.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.4900 (Rsun, estimated)
Stellar Mass (Msun): 0.5100 (Msun/observed) 0.5100 (Msun/estimated)
Spectral type : K5
Metalicity : -0.8500
Absolute Magnitude : 25.00
Apparent Magnitude : 14.08
Right Ascension(RA) : 291.83432
Declination(DEC) : 39.30736
  • The star Kepler-331 has apparent magnitude of 14.1, with absolute magnitude of 25.0.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 4347 with its spectral types of K5
  • Number of Extrasolar Planets : 3
  • Name of the 1 Planet Kepler-331 b radius 0.162000 mass 0.014452 orbital distance 0.065000
  • Name of the 2 Planet Kepler-331 c radius 0.164000 mass 0.014617 orbital distance 0.105000
  • Name of the 3 Planet Kepler-331 d radius 0.146000 mass 0.013119 orbital distance 0.159000
    (Illustration of the Kepler-331's Planetary System)



    The Star Kepler-331 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.201 AU ( 30007752.8 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.277 AU ( 41478556.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.422 AU ( 63204140.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.622 AU ( 93007661.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-331)



    Kopparapu's Recent Venus for Star Kepler-331 distance : 0.223 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-331 distance : 0.282 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-331 distance : 0.272 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-331 distance : 0.298 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-331 distance : 0.526 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-331 distance : 0.555 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-331)



  • Original Kopparapu Recent Venus for Star Kepler-331 distance : 0.220 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-331 distance : 0.291 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-331 distance : 0.291 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-331 distance : 0.534 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-331 distance : 0.556 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-331)



    (Position in Stellar Map of star Kepler-331 )



    (Zoomed position in Stellar Map of star Kepler-331 (zoom level 3))