Gliese 12

Display orbital revolution around the star Gliese 12
Imaginary Picture of Star Gliese 12
Star Name : Gliese 12
Alternate Name :
Star Distance (LY/pc): 39.6671 (LY) 12.1620 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.2690 (Rsun, estimated)
Stellar Mass (Msun): 0.2410 (Msun/observed) 0.2410 (Msun/estimated)
Spectral type : M3.5V
Metalicity : -0.3000
Absolute Magnitude : 12.17
Apparent Magnitude : 12.60
Right Ascension(RA) : 3.95500
Declination(DEC) : 13.55619
  • This is the Gliese 12 . The star Gliese 12 islocated about 39.7 light-years (12.2 pc) away from our Solar System.
  • The star Gliese 12 has apparent magnitude of 12.6, with absolute magnitude of 12.2.
  • It is 0.2 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3253 with its spectral types of M3.5V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet Gliese 12 b radius 0.091900 mass 0.004940 orbital distance 0.066000
    (Illustration of the Gliese 12's Planetary System)



    The Star Gliese 12 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.062 AU ( 9225258.0 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.085 AU ( 12751717.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.130 AU ( 19430795.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.191 AU ( 28593266.5 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Gliese 12)



    Kopparapu's Recent Venus for Star Gliese 12 distance : 0.070 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Gliese 12 distance : 0.088 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Gliese 12 distance : 0.085 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Gliese 12 distance : 0.093 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Gliese 12 distance : 0.174 AU
    Kopparapu's Outer Boundary for Early Mars for Star Gliese 12 distance : 0.184 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Gliese 12)



  • Original Kopparapu Recent Venus for Star Gliese 12 distance : 0.069 AU
  • Original Kopparapu Runaway Greenhouse for Star Gliese 12 distance : 0.092 AU
  • Original Kopparapu Moist Greenhouse for Star Gliese 12 distance : 0.092 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Gliese 12 distance : 0.177 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Gliese 12 distance : 0.184 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Gliese 12)



    (Position in Stellar Map of star Gliese 12 )



    (Zoomed position in Stellar Map of star Gliese 12 (zoom level 3))

    (Synthetic Spectrum of star GJ 674*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102