HD 40781

Display orbital revolution around the star HD 40781
Imaginary Picture of Star HD 40781
Star Name : HD 40781
Alternate Name : HIP 28333
Star Distance (LY/pc): 209.0092 (LY) 64.0826 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.1530 (Rsun, estimated)
Stellar Mass (Msun): 1.0900 (Msun/observed) 1.0900 (Msun/estimated)
Spectral type : G0V
Metalicity : 0.0000
Absolute Magnitude : 4.38
Apparent Magnitude : 8.41
Right Ascension(RA) : 89.80574
Declination(DEC) : -38.71054
  • This is the HD 40781 . The star HD 40781 islocated about 209.0 light-years (64.1 pc) away from our Solar System.
  • The star HD 40781 has apparent magnitude of 8.4, with absolute magnitude of 4.4.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5953 with its spectral types of G0V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 40781 b radius 0.907830 mass 60.000000 orbital distance 3300.000000
    (Illustration of the HD 40781's Planetary System)



    The Star HD 40781 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.885 AU ( 132421707.9 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.224 AU ( 183041406.2 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.864 AU ( 278914596.1 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.744 AU ( 410435046.7 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 40781)



    Kopparapu's Recent Venus for Star HD 40781 distance : 0.908 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 40781 distance : 1.150 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 40781 distance : 1.110 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 40781 distance : 1.217 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 40781 distance : 2.021 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 40781 distance : 2.132 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 40781)



  • Original Kopparapu Recent Venus for Star HD 40781 distance : 0.912 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 40781 distance : 1.181 AU
  • Original Kopparapu Moist Greenhouse for Star HD 40781 distance : 1.207 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 40781 distance : 2.057 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 40781 distance : 2.139 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 40781)



    (Position in Stellar Map of star HD 40781 )



    (Zoomed position in Stellar Map of star HD 40781 (zoom level 3))

    (Synthetic Spectrum of star HD 4732 A*)
    *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