alf Ari
Imaginary Picture of Star alf Ari
Star Name : alf Ari
Alternate Name :
Star Distance (LY/pc): 65.8103 (LY) 20.1776 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 13.9000 (Rsun, estimated)
Stellar Mass (Msun): 1.5000 (Msun/observed) 1.5000 (Msun/estimated)
Spectral type : K2III
Metalicity : -0.0900
Absolute Magnitude : 0.49
Apparent Magnitude : 2.01
Right Ascension(RA) : 31.79336
Declination(DEC) : 23.46222
  • This is the alf Ari . The star alf Ari islocated about 65.8 light-years (20.2 pc) away from our Solar System.
  • The star alf Ari has apparent magnitude of 2.0, with absolute magnitude of 0.5.
  • It is 1.5 times more massive and 13.9 times bigger compared with our Sun. The surface temperature is 4553 with its spectral types of K2III
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet alf Ari b radius 0.907830 mass 1.800000 orbital distance 1.200000
    (Illustration of the alf Ari's Planetary System)



    The Star alf Ari 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 6.242 AU ( 933830841.8 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 8.628 AU ( 1290798262.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 13.148 AU ( 1966890899.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 19.348 AU ( 2894366121.8 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star alf Ari)



    Kopparapu's Recent Venus for Star alf Ari distance : 6.882 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star alf Ari distance : 8.712 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star alf Ari distance : 8.414 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star alf Ari distance : 9.224 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star alf Ari distance : 16.097 AU
    Kopparapu's Outer Boundary for Early Mars for Star alf Ari distance : 16.980 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star alf Ari)



  • Original Kopparapu Recent Venus for Star alf Ari distance : 6.791 AU
  • Original Kopparapu Runaway Greenhouse for Star alf Ari distance : 8.992 AU
  • Original Kopparapu Moist Greenhouse for Star alf Ari distance : 8.985 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star alf Ari distance : 16.360 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star alf Ari distance : 17.014 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star alf Ari)



    (Position in Stellar Map of star alf Ari )



    (Zoomed position in Stellar Map of star alf Ari (zoom level 3))