K2-5

Display orbital revolution around the star K2-5
Imaginary Picture of Star K2-5
Star Name : K2-5
Alternate Name : "EPIC 201338508, 2MASS J11171284-0152406, WISE J111712.83-015240.3"
Star Distance (LY/pc): 657.3738 (LY) 201.5520 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.5700 (Rsun, estimated)
Stellar Mass (Msun): 0.6100 (Msun/observed) 0.6100 (Msun/estimated)
Spectral type : K7.5 V
Metalicity : -0.3300
Absolute Magnitude : 5.93
Apparent Magnitude : 12.45
Right Ascension(RA) : 169.30350
Declination(DEC) : -1.87798
  • This is the K2-5 . The star K2-5 islocated about 657.4 light-years (201.6 pc) away from our Solar System.
  • The star K2-5 has apparent magnitude of 12.4, with absolute magnitude of 5.9.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3930 with its spectral types of K7.5 V
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet K2-5 b radius 0.170000 mass 0.015114 orbital distance 0.053200
  • Name of the 2 Planet K2-5 c radius 0.202000 mass 0.017744 orbital distance 0.081800
    (Illustration of the K2-5's Planetary System)



    The Star K2-5 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.191 AU ( 28531070.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.264 AU ( 39437395.7 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.402 AU ( 60093863.5 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.591 AU ( 88430752.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-5)



    Kopparapu's Recent Venus for Star K2-5 distance : 0.214 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-5 distance : 0.271 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-5 distance : 0.262 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-5 distance : 0.286 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-5 distance : 0.516 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-5 distance : 0.544 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-5)



  • Original Kopparapu Recent Venus for Star K2-5 distance : 0.211 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-5 distance : 0.280 AU
  • Original Kopparapu Moist Greenhouse for Star K2-5 distance : 0.280 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-5 distance : 0.524 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-5 distance : 0.545 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-5)



    (Position in Stellar Map of star K2-5 )



    (Zoomed position in Stellar Map of star K2-5 (zoom level 3))

    (Synthetic Spectrum of star Kepler-821*)
    *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