HD 191939
Imaginary Picture of Star HD 191939
Star Name : HD 191939
Alternate Name :
Star Distance (LY/pc): 175.1201 (LY) 53.6921 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.9450 (Rsun, estimated)
Stellar Mass (Msun): 0.9200 (Msun/observed) 0.9200 (Msun/estimated)
Spectral type : G8V
Metalicity : -0.1600
Absolute Magnitude : 5.35
Apparent Magnitude : 9.00
Right Ascension(RA) : 302.02398
Declination(DEC) : 66.85028
  • This is the HD 191939 . The star HD 191939 islocated about 175.1 light-years (53.7 pc) away from our Solar System.
  • The star HD 191939 has apparent magnitude of 9.0, with absolute magnitude of 5.4.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5427 with its spectral types of G8V
  • Number of Extrasolar Planets : 3
  • Name of the 1 Planet HD 191939 b radius 0.300700 mass 0.025688 orbital distance 0.089000
  • Name of the 2 Planet HD 191939 c radius 0.287300 mass 0.024622 orbital distance 0.178000
  • Name of the 3 Planet HD 191939 d radius 0.281900 mass 0.024191 orbital distance 0.216000
    (Illustration of the HD 191939's Planetary System)



    The Star HD 191939 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.603 AU ( 90200628.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.833 AU ( 124680841.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.270 AU ( 189986009.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.869 AU ( 279572736.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 191939)



    Kopparapu's Recent Venus for Star HD 191939 distance : 0.638 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 191939 distance : 0.808 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 191939 distance : 0.780 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 191939 distance : 0.856 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 191939 distance : 1.441 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 191939 distance : 1.520 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 191939)



  • Original Kopparapu Recent Venus for Star HD 191939 distance : 0.635 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 191939 distance : 0.831 AU
  • Original Kopparapu Moist Greenhouse for Star HD 191939 distance : 0.840 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 191939 distance : 1.466 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 191939 distance : 1.525 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 191939)



    (Position in Stellar Map of star HD 191939 )



    (Zoomed position in Stellar Map of star HD 191939 (zoom level 3))