HD 154857

Display orbital revolution around the star HD 154857
Imaginary Picture of Star HD 154857
Star Name : HD 154857
Alternate Name :
Star Distance (LY/pc): 209.6118 (LY) 64.2674 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.7600 (Rsun, estimated)
Stellar Mass (Msun): 1.7180 (Msun/observed) 1.7180 (Msun/estimated)
Spectral type : G5V
Metalicity : -0.2200
Absolute Magnitude : 3.21
Apparent Magnitude : 7.25
Right Ascension(RA) : 257.81551
Declination(DEC) : -56.68056
  • This is the HD 154857 . The star HD 154857 islocated about 209.6 light-years (64.3 pc) away from our Solar System.
  • The star HD 154857 has apparent magnitude of 7.2, with absolute magnitude of 3.2.
  • It is 1.7 times more massive and 1.8 times bigger compared with our Sun. The surface temperature is 5445 with its spectral types of G5V
  • Number of Extrasolar Planets : 2
  • Name of the 1 Planet HD 154857 b radius 0.907830 mass 2.240000 orbital distance 1.291000
  • Name of the 2 Planet HD 154857 c radius 0.907830 mass 2.580000 orbital distance 5.360000
    (Illustration of the HD 154857's Planetary System)



    The Star HD 154857 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.130 AU ( 169108932.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.563 AU ( 233752738.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.381 AU ( 356187443.9 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.504 AU ( 524145427.3 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 154857)



    Kopparapu's Recent Venus for Star HD 154857 distance : 1.195 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 154857 distance : 1.513 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 154857 distance : 1.461 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 154857 distance : 1.602 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 154857 distance : 2.698 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 154857 distance : 2.846 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 154857)



  • Original Kopparapu Recent Venus for Star HD 154857 distance : 1.189 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 154857 distance : 1.556 AU
  • Original Kopparapu Moist Greenhouse for Star HD 154857 distance : 1.573 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 154857 distance : 2.744 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 154857 distance : 2.854 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 154857)



    (Position in Stellar Map of star HD 154857 )



    (Zoomed position in Stellar Map of star HD 154857 (zoom level 3))

    (Synthetic Spectrum of star HD 75898*)
    *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