alpha Cen B
Imaginary Picture of Star alpha Cen B
Star Name : alpha Cen B
Alternate Name :
Star Distance (LY/pc): 4.2237 (LY) 1.2950 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8632 (Rsun, estimated)
Stellar Mass (Msun): 0.9340 (Msun/observed) 0.9340 (Msun/estimated)
Spectral type : K1V
Metalicity : 0.0000
Absolute Magnitude : 5.77
Apparent Magnitude : 1.33
Right Ascension(RA) : 219.89610
Declination(DEC) : -60.83750
  • This is the alpha Cen B . The star alpha Cen B islocated about 4.2 light-years ( 1.3 pc) away from our Solar System.
  • The star alpha Cen B has apparent magnitude of 1.3, with absolute magnitude of 5.8.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5214 with its spectral types of K1V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet alf Cen B b radius 0.092790 mass 0.003600 orbital distance 0.040000
    (Illustration of the alpha Cen B's Planetary System)



    The Star alpha Cen B 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.508 AU ( 76052167.8 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.703 AU ( 105123970.7 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.071 AU ( 160185667.5 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.576 AU ( 235720227.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star alpha Cen B)



    Kopparapu's Recent Venus for Star alpha Cen B distance : 1.956 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star alpha Cen B distance : 2.477 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star alpha Cen B distance : 2.392 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star alpha Cen B distance : 2.624 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star alpha Cen B distance : 4.453 AU
    Kopparapu's Outer Boundary for Early Mars for Star alpha Cen B distance : 4.697 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star alpha Cen B)



  • Original Kopparapu Recent Venus for Star alpha Cen B distance : 1.940 AU
  • Original Kopparapu Runaway Greenhouse for Star alpha Cen B distance : 2.551 AU
  • Original Kopparapu Moist Greenhouse for Star alpha Cen B distance : 2.567 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star alpha Cen B distance : 4.529 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star alpha Cen B distance : 4.709 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star alpha Cen B)



    (Position in Stellar Map of star alpha Cen B )



    (Zoomed position in Stellar Map of star alpha Cen B (zoom level 3))