K2-400

Display orbital revolution around the star K2-400
Imaginary Picture of Star K2-400
Star Name : K2-400
Alternate Name : EPIC 248518307
Star Distance (LY/pc): 203.4574 (LY) 62.3804 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3820 (Rsun, estimated)
Stellar Mass (Msun): 0.3740 (Msun/observed) 0.3740 (Msun/estimated)
Spectral type : M3
Metalicity : -0.0510
Absolute Magnitude : 11.15
Apparent Magnitude : 15.13
Right Ascension(RA) : 154.51133
Declination(DEC) : 3.69678
  • This is the K2-400 . The star K2-400 islocated about 203.5 light-years (62.4 pc) away from our Solar System.
  • The star K2-400 has apparent magnitude of 15.1, with absolute magnitude of 11.2.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3578 with its spectral types of M3
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-400 b radius 0.103760 mass 0.005190 orbital distance 0.034700
    (Illustration of the K2-400's Planetary System)



    The Star K2-400 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.106 AU ( 15849010.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.146 AU ( 21907474.1 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.223 AU ( 33382142.4 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.328 AU ( 49123284.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-400)



    Kopparapu's Recent Venus for Star K2-400 distance : 0.120 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-400 distance : 0.151 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-400 distance : 0.146 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-400 distance : 0.160 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-400 distance : 0.293 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-400 distance : 0.309 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-400)



  • Original Kopparapu Recent Venus for Star K2-400 distance : 0.119 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-400 distance : 0.157 AU
  • Original Kopparapu Moist Greenhouse for Star K2-400 distance : 0.157 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-400 distance : 0.298 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-400 distance : 0.310 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-400)



    (Position in Stellar Map of star K2-400 )



    (Zoomed position in Stellar Map of star K2-400 (zoom level 3))

    (Synthetic Spectrum of star Kepler-1170*)
    *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