HD 77946

Display orbital revolution around the star HD 77946
Imaginary Picture of Star HD 77946
Star Name : HD 77946
Alternate Name :
Star Distance (LY/pc): 322.8944 (LY) 99.0000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.3100 (Rsun, estimated)
Stellar Mass (Msun): 1.1700 (Msun/observed) 1.1700 (Msun/estimated)
Spectral type : G0
Metalicity : 0.1800
Absolute Magnitude : 4.02
Apparent Magnitude : 9.00
Right Ascension(RA) : 136.77763
Declination(DEC) : 46.67242
  • This is the HD 77946 . The star HD 77946 islocated about 322.9 light-years (99.0 pc) away from our Solar System.
  • The star HD 77946 has apparent magnitude of 9.0, with absolute magnitude of 4.0.
  • It is 1.2 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6046 with its spectral types of G0
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 77946 b radius 0.241330 mass 0.026370 orbital distance 0.072000
    (Illustration of the HD 77946's Planetary System)



    The Star HD 77946 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.037 AU ( 155190700.6 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.434 AU ( 214514104.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.185 AU ( 326872023.3 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.215 AU ( 481006501.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 77946)



    Kopparapu's Recent Venus for Star HD 77946 distance : 1.058 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 77946 distance : 1.340 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 77946 distance : 1.294 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 77946 distance : 1.418 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 77946 distance : 2.350 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 77946 distance : 2.479 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 77946)



  • Original Kopparapu Recent Venus for Star HD 77946 distance : 1.065 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 77946 distance : 1.375 AU
  • Original Kopparapu Moist Greenhouse for Star HD 77946 distance : 1.409 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 77946 distance : 2.392 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 77946 distance : 2.488 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 77946)



    (Position in Stellar Map of star HD 77946 )



    (Zoomed position in Stellar Map of star HD 77946 (zoom level 3))

    (Synthetic Spectrum of star HD 16905*)
    *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