HD 195689

Display orbital revolution around the star HD 195689
Imaginary Picture of Star HD 195689
Star Name : HD 195689
Alternate Name : KELT-9
Star Distance (LY/pc): 670.7578 (LY) 205.6555 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.5813 (Rsun, estimated)
Stellar Mass (Msun): 0.0000 (Msun/observed) 2.3233 (Msun/estimated)
Spectral type : A0
Metalicity : 0.0000
Absolute Magnitude : 0.99
Apparent Magnitude : 7.56
Right Ascension(RA) : 307.85981
Declination(DEC) : 39.93883
  • This is the HD 195689 . The star HD 195689 islocated about 670.8 light-years (205.7 pc) away from our Solar System.
  • The star HD 195689 has apparent magnitude of 7.6, with absolute magnitude of 1.0.
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet KELT-9 b radius 1.936000 mass 2.880000 orbital distance 0.033680
  • Name of the 2 Planet KELT-9 b radius 1.840000 mass 2.880000 orbital distance 0.033680
    (Illustration of the HD 195689's Planetary System)



    The Star HD 195689 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 3.543 AU ( 530052403.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 4.898 AU ( 732670941.2 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 7.463 AU ( 1116428374.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 10.982 AU ( 1642873260.9 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 195689)



    Kopparapu's Recent Venus for Star HD 195689 distance : 5.079 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 195689 distance : 6.441 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 195689 distance : 6.242 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 195689 distance : 6.508 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 195689 distance : 11.495 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 195689 distance : 12.088 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 195689)



  • Original Kopparapu Recent Venus for Star HD 195689 distance : 4.157 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 195689 distance : 6.447 AU
  • Original Kopparapu Moist Greenhouse for Star HD 195689 distance : 5.501 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 195689 distance : 11.437 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 195689 distance : 11.894 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 195689)



    (Position in Stellar Map of star HD 195689 )



    (Zoomed position in Stellar Map of star HD 195689 (zoom level 3))

    (Synthetic Spectrum of star HD 156098*)
    *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