GJ 15 A
Imaginary Picture of Star GJ 15 A
Star Name : GJ 15 A
Alternate Name : "HD 1326A, HIP 1475, GX Andromedae, Groombridge 34, M2"
Star Distance (LY/pc): 11.6992 (LY) 3.5870 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3863 (Rsun, estimated)
Stellar Mass (Msun): 0.3750 (Msun/observed) 0.3750 (Msun/estimated)
Spectral type : M2V
Metalicity : -0.3200
Absolute Magnitude : 10.31
Apparent Magnitude : 8.08
Right Ascension(RA) : 4.59536
Declination(DEC) : 44.02295
  • This is the GJ 15 A . The star GJ 15 A islocated about 11.7 light-years ( 3.6 pc) away from our Solar System.
  • The star GJ 15 A has apparent magnitude of 8.1, with absolute magnitude of 10.3.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3567 with its spectral types of M2V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet GJ 15 A b radius 0.138738 mass 0.016833 orbital distance 0.071700
    (Illustration of the GJ 15 A's Planetary System)



    The Star GJ 15 A 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.106 AU ( 15929019.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.147 AU ( 22018067.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.224 AU ( 33550662.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.330 AU ( 49371269.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 15 A)



    Kopparapu's Recent Venus for Star GJ 15 A distance : 0.255 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star GJ 15 A distance : 0.322 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star GJ 15 A distance : 0.311 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star GJ 15 A distance : 0.340 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star GJ 15 A distance : 0.625 AU
    Kopparapu's Outer Boundary for Early Mars for Star GJ 15 A distance : 0.659 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 15 A)



  • Original Kopparapu Recent Venus for Star GJ 15 A distance : 0.252 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 15 A distance : 0.334 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 15 A distance : 0.334 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 15 A distance : 0.635 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 15 A distance : 0.660 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 15 A)



    (Position in Stellar Map of star GJ 15 A )



    (Zoomed position in Stellar Map of star GJ 15 A (zoom level 3))