GJ 238

Display orbital revolution around the star GJ 238
Imaginary Picture of Star GJ 238
Star Name : GJ 238
Alternate Name :
Star Distance (LY/pc): 49.6279 (LY) 15.2160 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.5660 (Rsun, estimated)
Stellar Mass (Msun): 0.4200 (Msun/observed) 0.4200 (Msun/estimated)
Spectral type : M4
Metalicity : 0.1500
Absolute Magnitude : 10.69
Apparent Magnitude : 11.60
Right Ascension(RA) : 98.45458
Declination(DEC) : -58.52492
  • This is the GJ 238 . The star GJ 238 islocated about 49.6 light-years (15.2 pc) away from our Solar System.
  • The star GJ 238 has apparent magnitude of 11.6, with absolute magnitude of 10.7.
  • It is 0.4 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3485 with its spectral types of M4
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet GJ 238 b radius 0.050500 mass 0.000418 orbital distance 0.021230
    (Illustration of the GJ 238's Planetary System)



    The Star GJ 238 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.149 AU ( 22278200.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.206 AU ( 30794295.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.314 AU ( 46923691.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.462 AU ( 69050266.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 238)



    Kopparapu's Recent Venus for Star GJ 238 distance : 0.168 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star GJ 238 distance : 0.213 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star GJ 238 distance : 0.206 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star GJ 238 distance : 0.225 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star GJ 238 distance : 0.415 AU
    Kopparapu's Outer Boundary for Early Mars for Star GJ 238 distance : 0.438 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 238)



  • Original Kopparapu Recent Venus for Star GJ 238 distance : 0.167 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 238 distance : 0.221 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 238 distance : 0.221 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 238 distance : 0.421 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 238 distance : 0.438 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 238)



    (Position in Stellar Map of star GJ 238 )



    (Zoomed position in Stellar Map of star GJ 238 (zoom level 3))

    (Synthetic Spectrum of star DE0823-49*)
    *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