HD 20003

Display orbital revolution around the star HD 20003
Imaginary Picture of Star HD 20003
Star Name : HD 20003
Alternate Name :
Star Distance (LY/pc): 139.5618 (LY) 42.7899 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.8056 (Rsun, estimated)
Stellar Mass (Msun): 0.0000 (Msun/observed) 0.8787 (Msun/estimated)
Spectral type : G8V
Metalicity : 0.0000
Absolute Magnitude : 5.21
Apparent Magnitude : 8.37
Right Ascension(RA) : 46.90833
Declination(DEC) : -72.32194
  • This is the HD 20003 . The star HD 20003 islocated about 139.6 light-years (42.8 pc) away from our Solar System.
  • The star HD 20003 has apparent magnitude of 8.4, with absolute magnitude of 5.2.
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet HD 20003 b radius 0.205054 mass 0.037800 orbital distance 0.097400
  • Name of the 2 Planet HD 20003 c radius 0.210314 mass 0.042200 orbital distance 0.196100
    (Illustration of the HD 20003's Planetary System)



    The Star HD 20003 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.517 AU ( 77267751.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.714 AU ( 106804225.3 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.088 AU ( 162746003.7 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.601 AU ( 239487873.8 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 20003)



    Kopparapu's Recent Venus for Star HD 20003 distance : 0.546 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 20003 distance : 0.691 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 20003 distance : 0.668 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 20003 distance : 0.732 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 20003 distance : 1.233 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 20003 distance : 1.301 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 20003)



  • Original Kopparapu Recent Venus for Star HD 20003 distance : 0.543 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 20003 distance : 0.711 AU
  • Original Kopparapu Moist Greenhouse for Star HD 20003 distance : 0.719 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 20003 distance : 1.255 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 20003 distance : 1.305 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 20003)



    (Position in Stellar Map of star HD 20003 )



    (Zoomed position in Stellar Map of star HD 20003 (zoom level 3))

    (Synthetic Spectrum of star HATS-40*)
    *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