HD 40307

Display orbital revolution around the star HD 40307
Imaginary Picture of Star HD 40307
Star Name : HD 40307
Alternate Name :
Star Distance (LY/pc): 42.3854 (LY) 12.9955 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 0.6591 (Rsun, estimated)
Stellar Mass (Msun): 0.7700 (Msun/observed) 0.7700 (Msun/estimated)
Spectral type : K2.5V
Metalicity : -0.3100
Absolute Magnitude : 6.60
Apparent Magnitude : 7.17
Right Ascension(RA) : 88.51667
Declination(DEC) : -60.02333
  • This is the HD 40307 . The star HD 40307 islocated about 42.4 light-years (13.0 pc) away from our Solar System.
  • The star HD 40307 has apparent magnitude of 7.2, with absolute magnitude of 6.6.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4977 with its spectral types of K2.5V
  • Number of Extrasolar Planets : 6
  • Name of the 1 Planet HD 40307 b radius 0.127231 mass 0.012000 orbital distance 0.047500
  • Name of the 2 Planet HD 40307 c radius 0.145310 mass 0.020200 orbital distance 0.081200
  • Name of the 3 Planet HD 40307 d radius 0.157058 mass 0.027500 orbital distance 0.134000
  • Name of the 4 Planet HD 40307 e radius 0.124412 mass 0.011000 orbital distance 0.188600
  • Name of the 5 Planet HD 40307 f radius 0.125562 mass 0.011400 orbital distance 0.248500
  • Name of the 6 Planet HD 40307 g radius 0.148989 mass 0.022300 orbital distance 0.600000
    (Illustration of the HD 40307's Planetary System)



    The Star HD 40307 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.354 AU ( 52914477.4 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.489 AU ( 73141636.0 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.745 AU ( 111451667.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.096 AU ( 164006010.4 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 40307)



    Kopparapu's Recent Venus for Star HD 40307 distance : 0.422 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 40307 distance : 0.534 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 40307 distance : 0.516 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 40307 distance : 0.566 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 40307 distance : 0.969 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 40307 distance : 1.022 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 40307)



  • Original Kopparapu Recent Venus for Star HD 40307 distance : 0.417 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 40307 distance : 0.550 AU
  • Original Kopparapu Moist Greenhouse for Star HD 40307 distance : 0.552 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 40307 distance : 0.985 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 40307 distance : 1.024 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 40307)



    (Position in Stellar Map of star HD 40307 )



    (Zoomed position in Stellar Map of star HD 40307 (zoom level 3))

    (Synthetic Spectrum of star HD 4313*)
    *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