Kepler-9

Display orbital revolution around the star Kepler-9
Imaginary Picture of Star Kepler-9
Star Name : Kepler-9
Alternate Name : "2MASS J19021775+3824032, KIC 3323887, KOI-377, WISE J190217.77+382402.9"
Star Distance (LY/pc): 2002.5978 (LY) 614.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.9600 (Rsun, estimated)
Stellar Mass (Msun): 1.0200 (Msun/observed) 1.0200 (Msun/estimated)
Spectral type : G3
Metalicity : 0.0500
Absolute Magnitude : 4.96
Apparent Magnitude : 13.90
Right Ascension(RA) : 285.57398
Declination(DEC) : 38.40089
  • This is the Kepler-9 . The star Kepler-9 islocated about 2002.6 light-years (614.0 pc) away from our Solar System.
  • The star Kepler-9 has apparent magnitude of 13.9, with absolute magnitude of 5.0.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5774 with its spectral types of G3
  • Number of Extrasolar Planets : 3
  • Name of the 1 Planet Kepler-9 b radius 0.740000 mass 0.136550 orbital distance 0.143000
  • Name of the 2 Planet Kepler-9 c radius 0.721000 mass 0.094080 orbital distance 0.227000
  • Name of the 3 Planet Kepler-9 d radius 0.146000 mass 0.016518 orbital distance 0.027300
    (Illustration of the Kepler-9's Planetary System)



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

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.693 AU ( 103724871.3 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.958 AU ( 143374878.7 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.460 AU ( 218471586.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.149 AU ( 321490509.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-9)



    Kopparapu's Recent Venus for Star Kepler-9 distance : 0.719 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star Kepler-9 distance : 0.910 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-9 distance : 0.879 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star Kepler-9 distance : 0.964 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star Kepler-9 distance : 1.608 AU
    Kopparapu's Outer Boundary for Early Mars for Star Kepler-9 distance : 1.696 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-9)



  • Original Kopparapu Recent Venus for Star Kepler-9 distance : 0.720 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-9 distance : 0.935 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-9 distance : 0.952 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-9 distance : 1.636 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-9 distance : 1.701 AU

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



    (Position in Stellar Map of star Kepler-9 )



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

    (Synthetic Spectrum of star HD 222155*)
    *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