K2-9

Display orbital revolution around the star K2-9
Imaginary Picture of Star K2-9
Star Name : K2-9
Alternate Name : "EPIC 201465501, 2MASS J11450348+0000190, WISE J114503.35+000019FL_  6?
Star Distance (LY/pc): 271.2313 (LY) 83.1600 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.3100 (Rsun, estimated)
Stellar Mass (Msun): 0.3000 (Msun/observed) 0.3000 (Msun/estimated)
Spectral type : M2.5 V
Metalicity : -0.2500
Absolute Magnitude : 7.85
Apparent Magnitude : 12.45
Right Ascension(RA) : 176.26447
Declination(DEC) : 0.10123
  • This is the K2-9 . The star K2-9 islocated about 271.2 light-years (83.2 pc) away from our Solar System.
  • The star K2-9 has apparent magnitude of 12.5, with absolute magnitude of 7.9.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3390 with its spectral types of M2.5 V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet K2-9 b radius 0.201000 mass 0.017662 orbital distance 0.091000
    (Illustration of the K2-9's Planetary System)



    The Star K2-9 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.077 AU ( 11545671.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.107 AU ( 15959135.5 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.163 AU ( 24318190.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.239 AU ( 35785283.0 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star K2-9)



    Kopparapu's Recent Venus for Star K2-9 distance : 0.087 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star K2-9 distance : 0.110 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star K2-9 distance : 0.107 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star K2-9 distance : 0.117 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star K2-9 distance : 0.216 AU
    Kopparapu's Outer Boundary for Early Mars for Star K2-9 distance : 0.228 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star K2-9)



  • Original Kopparapu Recent Venus for Star K2-9 distance : 0.087 AU
  • Original Kopparapu Runaway Greenhouse for Star K2-9 distance : 0.114 AU
  • Original Kopparapu Moist Greenhouse for Star K2-9 distance : 0.115 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star K2-9 distance : 0.220 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star K2-9 distance : 0.228 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star K2-9)



    (Position in Stellar Map of star K2-9 )



    (Zoomed position in Stellar Map of star K2-9 (zoom level 3))

    (Synthetic Spectrum of star Kepler-775*)
    *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