HD 221420

Display orbital revolution around the star HD 221420
Imaginary Picture of Star HD 221420
Star Name : HD 221420
Alternate Name :
Star Distance (LY/pc): 103.7176 (LY) 31.8000 (pc)
Stellar Radius (Rsun): 0.0000 (Rsun, measured) 1.3904 (Rsun, estimated)
Stellar Mass (Msun): 1.6700 (Msun/observed) 1.6700 (Msun/estimated)
Spectral type : G2IV-V
Metalicity : 0.2900
Absolute Magnitude : 3.29
Apparent Magnitude : 5.80
Right Ascension(RA) : 353.33333
Declination(DEC) : -77.38528
  • This is the HD 221420 . The star HD 221420 islocated about 103.7 light-years (31.8 pc) away from our Solar System.
  • The star HD 221420 has apparent magnitude of 5.8, with absolute magnitude of 3.3.
  • It is 1.7 times more massive and 1.4 times bigger compared with our Sun. The surface temperature is 5830 with its spectral types of G2IV-V
  • Number of Extrasolar Planets : 1
  • Name of the 1 Planet HD 221420 b radius 0.907830 mass 9.700000 orbital distance 0.000000
    (Illustration of the HD 221420's Planetary System)



    The Star HD 221420 's habitable zone is located at the following distance

    Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.024 AU ( 153157313.7 km)
    Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.415 AU ( 211703432.4 km)
    Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.156 AU ( 322589181.1 km)
    Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.173 AU ( 474704111.6 km)
    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 221420)



    Kopparapu's Recent Venus for Star HD 221420 distance : 0.747 AU
    Kopparapu's Runaway Greenhouse for Earth-sized planet for Star HD 221420 distance : 0.946 AU
    Kopparapu's Runaway Greenhouse for Super-Earth-sized planet for Star HD 221420 distance : 0.914 AU
    Kopparapu's Runaway Greenhouse for Mars-sized planet for Star HD 221420 distance : 1.002 AU
    Kopparapu's Outer Boundary for Maximum Greenhouse for Star HD 221420 distance : 1.669 AU
    Kopparapu's Outer Boundary for Early Mars for Star HD 221420 distance : 1.760 AU
    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 221420)



  • Original Kopparapu Recent Venus for Star HD 221420 distance : 0.749 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 221420 distance : 0.972 AU
  • Original Kopparapu Moist Greenhouse for Star HD 221420 distance : 0.991 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 221420 distance : 1.698 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 221420 distance : 1.766 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 221420)



    (Position in Stellar Map of star HD 221420 )



    (Zoomed position in Stellar Map of star HD 221420 (zoom level 3))

    (Synthetic Spectrum of star HD 125595*)
    *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