Kepler-138

Display orbital revolution around the star Kepler-138
Imaginary Picture of Star Kepler-138
Star Name : Kepler-138
Alternate Name : "KOI-314, 2MASS J19213157+4317347, KIC 7603200, WISE J192131.55+431734.9"
Star Distance (LY/pc): 218.4919 (LY) 66.9900 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.4400 (Rsun, estimated)
Stellar Mass (Msun): 0.5200 (Msun/observed) 0.5200 (Msun/estimated)
Spectral type : M1 V
Metalicity : -0.2800
Absolute Magnitude : 6.16
Apparent Magnitude : 10.29
Right Ascension(RA) : 290.38155
Declination(DEC) : 43.29297
  • This is the Kepler-138 . The star Kepler-138 islocated about 218.5 light-years (67.0 pc) away from our Solar System.
  • The star Kepler-138 has apparent magnitude of 10.3, with absolute magnitude of 6.2.
  • It is 0.5 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3841 with its spectral types of M1 V
  • Number of Extrasolar Planets : 4
  • Name of the 1 Planet Kepler-138 b radius 0.047000 mass 0.000210 orbital distance 0.074600
  • Name of the 2 Planet Kepler-138 c radius 0.107000 mass 0.006200 orbital distance 0.000000
  • Name of the 3 Planet Kepler-138 d radius 0.108000 mass 0.002010 orbital distance 0.000000
  • Name of the 4 Planet Kepler-138 e radius 0.071072 mass 0.001350 orbital distance 0.000000
    (Illustration of the Kepler-138's Planetary System)



    The Star Kepler-138 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.141 AU ( 21037755.5 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.194 AU ( 29079675.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.296 AU ( 44310990.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.436 AU ( 65205564.1 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-138)



    Kopparapu's Recent Venus for Star Kepler-138 distance : 0.158 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-138 distance : 0.200 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-138 distance : 0.193 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-138 distance : 0.211 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-138 distance : 0.383 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-138 distance : 0.404 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-138)



  • Original Kopparapu Recent Venus for Star Kepler-138 distance : 0.156 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-138 distance : 0.207 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-138 distance : 0.207 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-138 distance : 0.389 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-138 distance : 0.404 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-138)



    (Position in Stellar Map of star Kepler-138 )



    (Zoomed position in Stellar Map of star Kepler-138 (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