KOI-217

Display orbital revolution around the star KOI-217
Imaginary Picture of Star KOI-217
Star Name : KOI-217
Alternate Name : "2MASS J19392772+4617090, BOKS-1, KIC 9595827, Kepler-71, WISE J193927.71+461708.9"
Star Distance (LY/pc): 2609.2480 (LY) 800.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8600 (Rsun, estimated)
Stellar Mass (Msun): 0.9500 (Msun/observed) 0.9500 (Msun/estimated)
Spectral type : G7
Metalicity : -0.2000
Absolute Magnitude : 5.87
Apparent Magnitude : 15.39
Right Ascension(RA) : 294.86550
Declination(DEC) : 46.28585
  • This is the KOI-217 . The star KOI-217 islocated about 2609.2 light-years (800.0 pc) away from our Solar System.
  • The star KOI-217 has apparent magnitude of 15.4, with absolute magnitude of 5.9.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5545 with its spectral types of G7
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet Kepler-71 b radius 1.110010 mass 0.788907 orbital distance 0.047700
    (Illustration of the KOI-217's Planetary System)



    The Star KOI-217 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.573 AU ( 85695825.1 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.792 AU ( 118454025.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.207 AU ( 180497720.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.775 AU ( 265610303.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KOI-217)



    Kopparapu's Recent Venus for Star KOI-217 distance : 0.602 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star KOI-217 distance : 0.762 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star KOI-217 distance : 0.736 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star KOI-217 distance : 0.807 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star KOI-217 distance : 1.355 AU
    Kopparapu's Outer Boundary for Early Mars for Star KOI-217 distance : 1.429 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KOI-217)



  • Original Kopparapu Recent Venus for Star KOI-217 distance : 0.600 AU
  • Original Kopparapu Runaway Greenhouse for Star KOI-217 distance : 0.784 AU
  • Original Kopparapu Moist Greenhouse for Star KOI-217 distance : 0.794 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KOI-217 distance : 1.379 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KOI-217 distance : 1.434 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KOI-217)



    (Position in Stellar Map of star KOI-217 )



    (Zoomed position in Stellar Map of star KOI-217 (zoom level 3))

    (Synthetic Spectrum of star HIP 21152*)
    *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