HD 178911 B

Display orbital revolution around the star HD 178911 B
Imaginary Picture of Star HD 178911 B
Star Name : HD 178911 B
Alternate Name :
Star Distance (LY/pc): 135.3906 (LY) 41.5110 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1400 (Rsun, estimated)
Stellar Mass (Msun): 1.0700 (Msun/observed) 1.0700 (Msun/estimated)
Spectral type : G5
Metalicity : 0.2800
Absolute Magnitude : 4.89
Apparent Magnitude : 7.98
Right Ascension(RA) : 287.26291
Declination(DEC) : 34.59972
  • This is the HD 178911 B . The star HD 178911 B islocated about 135.4 light-years (41.5 pc) away from our Solar System.
  • The star HD 178911 B has apparent magnitude of 8.0, with absolute magnitude of 4.9.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5650 with its spectral types of G5
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 178911 B b radius 1.049869 mass 6.292000 orbital distance 0.320000
    (Illustration of the HD 178911 B's Planetary System)



    The Star HD 178911 B 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.788 AU ( 117939656.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.090 AU ( 163023426.9 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.661 AU ( 248411625.6 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.444 AU ( 365548589.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 178911 B)



    Kopparapu's Recent Venus for Star HD 178911 B distance : 0.823 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 178911 B distance : 1.043 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 178911 B distance : 1.007 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 178911 B distance : 1.104 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 178911 B distance : 1.848 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 178911 B distance : 1.949 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 178911 B)



  • Original Kopparapu Recent Venus for Star HD 178911 B distance : 0.822 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 178911 B distance : 1.072 AU
  • Original Kopparapu Moist Greenhouse for Star HD 178911 B distance : 1.088 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 178911 B distance : 1.880 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 178911 B distance : 1.955 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 178911 B)



    (Position in Stellar Map of star HD 178911 B )



    (Zoomed position in Stellar Map of star HD 178911 B (zoom level 3))

    (Synthetic Spectrum of star HD 92987*)
    *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