Kepler-391
Imaginary Picture of Star Kepler-391
Star Name : Kepler-391
Alternate Name :
Star Distance (LY/pc): 0.0000 (LY) 0.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 3.5700 (Rsun, estimated)
Stellar Mass (Msun): 1.2200 (Msun/observed) 1.2200 (Msun/estimated)
Spectral type : K2
Metalicity : 0.0200
Absolute Magnitude : 25.00
Apparent Magnitude : 11.56
Right Ascension(RA) : 290.62183
Declination(DEC) : 51.05730
  • The star Kepler-391 has apparent magnitude of 11.6, with absolute magnitude of 25.0.
  • It is 1.2 times more massive and 3.6 times bigger compared with our Sun. The surface temperature is 4940 with its spectral types of K2
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet Kepler-391 b radius 0.025430 mass 0.000042 orbital distance 0.083000
  • Name of the 2 Planet Kepler-391 c radius 0.256900 mass 1.416000 orbital distance 0.164000
    (Illustration of the Kepler-391's Planetary System)



    The Star Kepler-391 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.887 AU ( 282345081.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.609 AU ( 390274688.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.975 AU ( 594692256.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.850 AU ( 875115707.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-391)



    Kopparapu's Recent Venus for Star Kepler-391 distance : 2.047 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-391 distance : 2.592 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-391 distance : 2.504 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-391 distance : 2.746 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-391 distance : 4.710 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-391 distance : 4.968 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-391)



  • Original Kopparapu Recent Venus for Star Kepler-391 distance : 2.025 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-391 distance : 2.672 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-391 distance : 2.679 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-391 distance : 4.789 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-391 distance : 4.980 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-391)



    (Position in Stellar Map of star Kepler-391 )



    (Zoomed position in Stellar Map of star Kepler-391 (zoom level 3))