HD 18742

Display orbital revolution around the star HD 18742
Imaginary Picture of Star HD 18742
Star Name : HD 18742
Alternate Name :
Star Distance (LY/pc): 524.3666 (LY) 160.7717 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 5.1300 (Rsun, estimated)
Stellar Mass (Msun): 1.3600 (Msun/observed) 1.3600 (Msun/estimated)
Spectral type : G8/K0
Metalicity : -0.0400
Absolute Magnitude : 1.78
Apparent Magnitude : 7.81
Right Ascension(RA) : 45.04440
Declination(DEC) : -20.80261
  • This is the HD 18742 . The star HD 18742 islocated about 524.4 light-years (160.8 pc) away from our Solar System.
  • The star HD 18742 has apparent magnitude of 7.8, with absolute magnitude of 1.8.
  • It is 1.4 times more massive and 5.1 times bigger compared with our Sun. The surface temperature is 4940 with its spectral types of G8/K0
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 18742 b radius 1.166000 mass 3.400000 orbital distance 1.820000
    (Illustration of the HD 18742's Planetary System)



    The Star HD 18742 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.712 AU ( 405722764.0 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.749 AU ( 560814887.8 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 5.712 AU ( 854557781.0 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 8.406 AU ( 1257519210.5 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 18742)



    Kopparapu's Recent Venus for Star HD 18742 distance : 2.942 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 18742 distance : 3.725 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 18742 distance : 3.598 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 18742 distance : 3.946 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 18742 distance : 6.768 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 18742 distance : 7.139 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 18742)



  • Original Kopparapu Recent Venus for Star HD 18742 distance : 2.910 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 18742 distance : 3.840 AU
  • Original Kopparapu Moist Greenhouse for Star HD 18742 distance : 3.850 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 18742 distance : 6.881 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 18742 distance : 7.156 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 18742)



    (Position in Stellar Map of star HD 18742 )



    (Zoomed position in Stellar Map of star HD 18742 (zoom level 3))

    (Synthetic Spectrum of star HATS-35*)
    *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