HD 181720

Display orbital revolution around the star HD 181720
Imaginary Picture of Star HD 181720
Star Name : HD 181720
Alternate Name :
Star Distance (LY/pc): 189.4053 (LY) 58.0720 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8740 (Rsun, estimated)
Stellar Mass (Msun): 0.9200 (Msun/observed) 0.9200 (Msun/estimated)
Spectral type : G1V
Metalicity : -0.5300
Absolute Magnitude : 4.04
Apparent Magnitude : 7.86
Right Ascension(RA) : 290.72077
Declination(DEC) : -32.91917
  • This is the HD 181720 . The star HD 181720 islocated about 189.4 light-years (58.1 pc) away from our Solar System.
  • The star HD 181720 has apparent magnitude of 7.9, with absolute magnitude of 4.0.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5781 with its spectral types of G1V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 181720 b radius 0.907830 mass 12.000000 orbital distance 1.780000
    (Illustration of the HD 181720's Planetary System)



    The Star HD 181720 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.633 AU ( 94662632.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.875 AU ( 130848496.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.333 AU ( 199384151.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.961 AU ( 293402513.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 181720)



    Kopparapu's Recent Venus for Star HD 181720 distance : 0.786 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 181720 distance : 0.995 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 181720 distance : 0.961 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 181720 distance : 1.054 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 181720 distance : 1.758 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 181720 distance : 1.854 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 181720)



  • Original Kopparapu Recent Venus for Star HD 181720 distance : 0.787 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 181720 distance : 1.023 AU
  • Original Kopparapu Moist Greenhouse for Star HD 181720 distance : 1.042 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 181720 distance : 1.789 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 181720 distance : 1.860 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 181720)



    (Position in Stellar Map of star HD 181720 )



    (Zoomed position in Stellar Map of star HD 181720 (zoom level 3))

    (Synthetic Spectrum of star HD 95089*)
    *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