tau Gem
Imaginary Picture of Star tau Gem
Star Name : tau Gem
Alternate Name :
Star Distance (LY/pc): 321.0197 (LY) 98.4252 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 26.8000 (Rsun, estimated)
Stellar Mass (Msun): 2.3000 (Msun/observed) 2.3000 (Msun/estimated)
Spectral type : K2III
Metalicity : 0.1400
Absolute Magnitude : -0.57
Apparent Magnitude : 4.40
Right Ascension(RA) : 107.78488
Declination(DEC) : 30.24528
  • This is the tau Gem . The star tau Gem islocated about 321.0 light-years (98.4 pc) away from our Solar System.
  • The star tau Gem has apparent magnitude of 4.4, with absolute magnitude of -0.6.
  • It is 2.3 times more massive and 26.8 times bigger compared with our Sun. The surface temperature is 4388 with its spectral types of K2III
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet tau Gem b radius 0.907830 mass 20.600000 orbital distance 1.170000
    (Illustration of the tau Gem's Planetary System)



    The Star tau Gem 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 11.179 AU ( 1672346032.9 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 15.452 AU ( 2311619253.8 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 23.546 AU ( 3522396182.5 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 34.649 AU ( 5183360288.8 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star tau Gem)



    Kopparapu's Recent Venus for Star tau Gem distance : 12.394 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star tau Gem distance : 15.689 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star tau Gem distance : 15.153 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star tau Gem distance : 16.608 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star tau Gem distance : 29.213 AU
    Kopparapu's Outer Boundary for Early Mars for Star tau Gem distance : 30.817 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star tau Gem)



  • Original Kopparapu Recent Venus for Star tau Gem distance : 12.228 AU
  • Original Kopparapu Runaway Greenhouse for Star tau Gem distance : 16.203 AU
  • Original Kopparapu Moist Greenhouse for Star tau Gem distance : 16.179 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star tau Gem distance : 29.687 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star tau Gem distance : 30.874 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star tau Gem)



    (Position in Stellar Map of star tau Gem )



    (Zoomed position in Stellar Map of star tau Gem (zoom level 3))