HD 128311
Imaginary Picture of Star HD 128311
Star Name : HD 128311
Alternate Name :
Star Distance (LY/pc): 53.8211 (LY) 16.5017 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.7300 (Rsun, estimated)
Stellar Mass (Msun): 0.8400 (Msun/observed) 0.8400 (Msun/estimated)
Spectral type : K0V
Metalicity : 0.0800
Absolute Magnitude : 6.42
Apparent Magnitude : 7.51
Right Ascension(RA) : 219.00233
Declination(DEC) : 9.74639
  • This is the HD 128311 . The star HD 128311 islocated about 53.8 light-years (16.5 pc) away from our Solar System.
  • The star HD 128311 has apparent magnitude of 7.5, with absolute magnitude of 6.4.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4965 with its spectral types of K0V
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet HD 128311 b radius 0.907830 mass 2.180000 orbital distance 1.099000
  • Name of the 2 Planet HD 128311 c radius 0.907830 mass 4.190000 orbital distance 1.760000
    (Illustration of the HD 128311's Planetary System)



    The Star HD 128311 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.390 AU ( 58320263.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.539 AU ( 80613845.2 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.821 AU ( 122837660.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.208 AU ( 180760998.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 128311)



    Kopparapu's Recent Venus for Star HD 128311 distance : 0.422 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 128311 distance : 0.535 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 128311 distance : 0.517 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 128311 distance : 0.567 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 128311 distance : 0.971 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 128311 distance : 1.024 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 128311)



  • Original Kopparapu Recent Venus for Star HD 128311 distance : 0.418 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 128311 distance : 0.551 AU
  • Original Kopparapu Moist Greenhouse for Star HD 128311 distance : 0.553 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 128311 distance : 0.987 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 128311 distance : 1.026 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 128311)



    (Position in Stellar Map of star HD 128311 )



    (Zoomed position in Stellar Map of star HD 128311 (zoom level 3))