GJ 229

Display orbital revolution around the star GJ 229
Imaginary Picture of Star GJ 229
Star Name : GJ 229
Alternate Name :
Star Distance (LY/pc): 18.7768 (LY) 5.7570 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.5252 (Rsun, estimated)
Stellar Mass (Msun): 0.5800 (Msun/observed) 0.5800 (Msun/estimated)
Spectral type : M1 V
Metalicity : 0.0000
Absolute Magnitude : 9.32
Apparent Magnitude : 8.12
Right Ascension(RA) : 92.64423
Declination(DEC) : -21.86464
  • This is the GJ 229 . The star GJ 229 islocated about 18.8 light-years ( 5.8 pc) away from our Solar System.
  • The star GJ 229 has apparent magnitude of 8.1, with absolute magnitude of 9.3.
  • It is 0.6 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3564 with its spectral types of M1 V
  • Number of Extrasolar Planets : 3
  • Name of the 1 Planet GJ 229 A b radius 0.196676 mass 0.031530 orbital distance 0.896000
  • Name of the 2 Planet GJ 229 A c radius 0.153265 mass 0.024950 orbital distance 0.339000
  • Name of the 3 Planet GJ 229 B radius 0.907830 mass 35.000000 orbital distance 19.433000
    (Illustration of the GJ 229's Planetary System)



    The Star GJ 229 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.145 AU ( 21619794.2 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.200 AU ( 29884205.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.304 AU ( 45536915.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.448 AU ( 67009566.4 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 229)



    Kopparapu's Recent Venus for Star GJ 229 distance : 0.191 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star GJ 229 distance : 0.242 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star GJ 229 distance : 0.234 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star GJ 229 distance : 0.256 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star GJ 229 distance : 0.470 AU
    Kopparapu's Outer Boundary for Early Mars for Star GJ 229 distance : 0.496 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 229)



  • Original Kopparapu Recent Venus for Star GJ 229 distance : 0.190 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 229 distance : 0.251 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 229 distance : 0.251 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 229 distance : 0.477 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 229 distance : 0.497 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 229)



    (Position in Stellar Map of star GJ 229 )



    (Zoomed position in Stellar Map of star GJ 229 (zoom level 3))

    (Synthetic Spectrum of star *)
    *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