K2-139

Display orbital revolution around the star K2-139
Imaginary Picture of Star K2-139
Star Name : K2-139
Alternate Name : "2MASS J19161596-1754384, EPIC 218916923, TYC 6300-2008-1, WISE J191615.99-175438.5"
Star Distance (LY/pc): 498.9231 (LY) 152.9707 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8800 (Rsun, estimated)
Stellar Mass (Msun): 0.9600 (Msun/observed) 0.9600 (Msun/estimated)
Spectral type : K0 V
Metalicity : 0.2400
Absolute Magnitude : 5.78
Apparent Magnitude : 11.70
Right Ascension(RA) : 289.06653
Declination(DEC) : -17.91069
  • This is the K2-139 . The star K2-139 islocated about 498.9 light-years (153.0 pc) away from our Solar System.
  • The star K2-139 has apparent magnitude of 11.7, with absolute magnitude of 5.8.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5370 with its spectral types of K0 V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-139 b radius 0.813000 mass 0.381000 orbital distance 0.179600
    (Illustration of the K2-139's Planetary System)



    The Star K2-139 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.550 AU ( 82241184.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.760 AU ( 113678809.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.158 AU ( 173221347.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.704 AU ( 254902801.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-139)



    Kopparapu's Recent Venus for Star K2-139 distance : 0.583 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-139 distance : 0.739 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-139 distance : 0.714 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-139 distance : 0.783 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-139 distance : 1.321 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-139 distance : 1.393 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-139)



  • Original Kopparapu Recent Venus for Star K2-139 distance : 0.580 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-139 distance : 0.760 AU
  • Original Kopparapu Moist Greenhouse for Star K2-139 distance : 0.767 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-139 distance : 1.343 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-139 distance : 1.397 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-139)



    (Position in Stellar Map of star K2-139 )



    (Zoomed position in Stellar Map of star K2-139 (zoom level 3))

    (Synthetic Spectrum of star Kepler-939*)
    *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