HD 20794

Display orbital revolution around the star HD 20794
Imaginary Picture of Star HD 20794
Star Name : HD 20794
Alternate Name :
Star Distance (LY/pc): 19.7651 (LY) 6.0600 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.9000 (Rsun, estimated)
Stellar Mass (Msun): 0.8130 (Msun/observed) 0.8130 (Msun/estimated)
Spectral type : G8V
Metalicity : -0.3800
Absolute Magnitude : 5.35
Apparent Magnitude : 4.26
Right Ascension(RA) : 49.98333
Declination(DEC) : -43.06972
  • This is the HD 20794 . The star HD 20794 islocated about 19.8 light-years ( 6.1 pc) away from our Solar System.
  • The star HD 20794 has apparent magnitude of 4.3, with absolute magnitude of 5.3.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5490 with its spectral types of G8V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 20794 c radius 0.114294 mass 0.007930 orbital distance 0.225000
    (Illustration of the HD 20794's Planetary System)



    The Star HD 20794 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.588 AU ( 87911423.2 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.812 AU ( 121516560.8 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.238 AU ( 185164347.2 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.821 AU ( 272477448.4 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 20794)



    Kopparapu's Recent Venus for Star HD 20794 distance : 0.619 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 20794 distance : 0.784 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 20794 distance : 0.758 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 20794 distance : 0.831 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 20794 distance : 1.397 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 20794 distance : 1.473 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 20794)



  • Original Kopparapu Recent Venus for Star HD 20794 distance : 0.617 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 20794 distance : 0.807 AU
  • Original Kopparapu Moist Greenhouse for Star HD 20794 distance : 0.816 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 20794 distance : 1.421 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 20794 distance : 1.478 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 20794)



    (Position in Stellar Map of star HD 20794 )



    (Zoomed position in Stellar Map of star HD 20794 (zoom level 3))

    (Synthetic Spectrum of star HATS-44*)
    *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