GJ 251

Display orbital revolution around the star GJ 251
Imaginary Picture of Star GJ 251
Star Name : GJ 251
Alternate Name :
Star Distance (LY/pc): 18.2043 (LY) 5.5815 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3640 (Rsun, estimated)
Stellar Mass (Msun): 0.3600 (Msun/observed) 0.3600 (Msun/estimated)
Spectral type : M3.0V
Metalicity : -0.0300
Absolute Magnitude : 11.27
Apparent Magnitude : 10.00
Right Ascension(RA) : 103.70399
Declination(DEC) : 33.26639
  • This is the GJ 251 . The star GJ 251 islocated about 18.2 light-years ( 5.6 pc) away from our Solar System.
  • The star GJ 251 has apparent magnitude of 10.0, with absolute magnitude of 11.3.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3451 with its spectral types of M3.0V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet GJ 251 b radius 0.129874 mass 0.013000 orbital distance 0.081800
    (Illustration of the GJ 251's Planetary System)



    The Star GJ 251 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.094 AU ( 14049129.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.130 AU ( 19419568.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.198 AU ( 29591124.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.291 AU ( 43544636.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 251)



    Kopparapu's Recent Venus for Star GJ 251 distance : 0.106 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star GJ 251 distance : 0.134 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star GJ 251 distance : 0.130 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star GJ 251 distance : 0.142 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star GJ 251 distance : 0.262 AU
    Kopparapu's Outer Boundary for Early Mars for Star GJ 251 distance : 0.276 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 251)



  • Original Kopparapu Recent Venus for Star GJ 251 distance : 0.105 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 251 distance : 0.139 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 251 distance : 0.139 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 251 distance : 0.266 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 251 distance : 0.277 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 251)



    (Position in Stellar Map of star GJ 251 )



    (Zoomed position in Stellar Map of star GJ 251 (zoom level 3))

    (Synthetic Spectrum of star EPIC 249893012*)
    *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