GJ 876

Display orbital revolution around the star GJ 876
Imaginary Picture of Star GJ 876
Star Name : GJ 876
Alternate Name :
Star Distance (LY/pc): 15.2924 (LY) 4.6887 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3600 (Rsun, estimated)
Stellar Mass (Msun): 0.3340 (Msun/observed) 0.3340 (Msun/estimated)
Spectral type : M4 V
Metalicity : 0.0500
Absolute Magnitude : 11.81
Apparent Magnitude : 10.17
Right Ascension(RA) : 343.31972
Declination(DEC) : -14.25361
  • This is the GJ 876 . The star GJ 876 islocated about 15.3 light-years ( 4.7 pc) away from our Solar System.
  • The star GJ 876 has apparent magnitude of 10.2, with absolute magnitude of 11.8.
  • It is 0.3 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3350 with its spectral types of M4 V
  • Number of Extrasolar Planets : 4
  • Name of the 1 Planet GJ 876 b radius 0.907830 mass 3.600000 orbital distance 0.214000
  • Name of the 2 Planet GJ 876 c radius 0.907830 mass 0.698000 orbital distance 0.134000
  • Name of the 3 Planet GJ 876 d radius 0.148037 mass 0.021741 orbital distance 0.021000
  • Name of the 4 Planet GJ 876 e radius 0.217205 mass 0.048550 orbital distance 0.345000
    (Illustration of the GJ 876's Planetary System)



    The Star GJ 876 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.088 AU ( 13093333.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.121 AU ( 18098408.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.184 AU ( 27577969.4 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.271 AU ( 40582190.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 876)



    Kopparapu's Recent Venus for Star GJ 876 distance : 0.099 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star GJ 876 distance : 0.125 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star GJ 876 distance : 0.121 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star GJ 876 distance : 0.132 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star GJ 876 distance : 0.246 AU
    Kopparapu's Outer Boundary for Early Mars for Star GJ 876 distance : 0.259 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 876)



  • Original Kopparapu Recent Venus for Star GJ 876 distance : 0.098 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 876 distance : 0.130 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 876 distance : 0.130 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 876 distance : 0.250 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 876 distance : 0.260 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 876)



    (Position in Stellar Map of star GJ 876 )



    (Zoomed position in Stellar Map of star GJ 876 (zoom level 3))

    (Synthetic Spectrum of star GJ 27.1*)
    *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