HD 18757 A

Display orbital revolution around the star HD 18757 A
Imaginary Picture of Star HD 18757 A
Star Name : HD 18757 A
Alternate Name : KUI 11
Star Distance (LY/pc): 76.8750 (LY) 23.5700 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.0470 (Rsun, estimated)
Stellar Mass (Msun): 1.0200 (Msun/observed) 1.0200 (Msun/estimated)
Spectral type : G1.5V
Metalicity : -0.2830
Absolute Magnitude : 4.78
Apparent Magnitude : 6.64
Right Ascension(RA) : 46.04014
Declination(DEC) : 61.70582
  • This is the HD 18757 A . The star HD 18757 A islocated about 76.9 light-years (23.6 pc) away from our Solar System.
  • The star HD 18757 A has apparent magnitude of 6.6, with absolute magnitude of 4.8.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5736 with its spectral types of G1.5V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 18757 Ab radius 0.907830 mass 35.200000 orbital distance 22.000000
    (Illustration of the HD 18757 A's Planetary System)



    The Star HD 18757 A 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.746 AU ( 111640835.9 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.032 AU ( 154316810.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.572 AU ( 235144668.8 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.313 AU ( 346025681.2 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 18757 A)



    Kopparapu's Recent Venus for Star HD 18757 A distance : 0.775 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 18757 A distance : 0.982 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 18757 A distance : 0.948 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 18757 A distance : 1.040 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 18757 A distance : 1.736 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 18757 A distance : 1.831 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 18757 A)



  • Original Kopparapu Recent Venus for Star HD 18757 A distance : 0.776 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 18757 A distance : 1.009 AU
  • Original Kopparapu Moist Greenhouse for Star HD 18757 A distance : 1.027 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 18757 A distance : 1.766 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 18757 A distance : 1.837 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 18757 A)



    (Position in Stellar Map of star HD 18757 A )



    (Zoomed position in Stellar Map of star HD 18757 A (zoom level 3))

    (Synthetic Spectrum of star HATS-36*)
    *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