Imaginary Picture of HD 220197 b

Display orbital revolution of HD 220197 b around the hoststar HD 220197
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Exoplanet Name : HD 220197 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.2000 (Mjup) 63.5876 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.7290 (AU) 2.7290 (AU Est.)
Eccentricity : 0.1870
Orbital Period(Yrs) 4.7309
Orbital Period(Observed/Estimated) 1728.00 (Days Obs.) 1726.14 (Days Est.)
Surface Gravity (G Earth) 0.6141
Star Radiation at Atmospheric Boundary: 165.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 159.9 (K)
Blackbody T 0.3(K) 150.2 (K)
Blackbody T 0.7(K) 121.5 (K)
Tidally Locked Blackbody T 0.1(K) 190.2 (K)
Tidally Locked Blackbody T 0.3(K) 178.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 220197
Alternate Name :
Star Distance(LY) : 213.2
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 10.2 (GY)
Temperature : 5683 (K)
Spectral type : F8V
UV portion[%]: 7.5
Visible portion[%]: 44.3
IR portion[%]: 48.1
Metalicity : -0.6
Absolute Magnitude: 4.9
Apparent Magnitude: 9.0
Right Ascension(RA) 350.4929
Declination (DEC) 16.6325
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+220197+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 220197 b
HD 220197 b

  • HD 220197 b is an exoplanet orbiting the star HD 220197, located about 213.2 light-years (65.4 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star HD 220197 has apparent magnitude of 9.0, with absolute magnitude of 4.9.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5683 with its spectral types of F8V
  • In this planetary system, the extrasolar planet HD 220197 b orbits around the star HD 220197 every 1728.0 days with its orbital distance of 2.73 AU ( 408252589.1 km)
  • (Projected orbit of HD 220197 b around its host star HD 220197)


  • The Star HD 220197 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.686 AU ( 102574521.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.948 AU ( 141784794.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.444 AU ( 216048650.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.125 AU ( 317925053.5 km)
  • Radiation at Planetary Boundary of HD 220197 b : 164.95 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 220197)



  • Kopparapu Recent Venus for Star HD 220197 distance : 0.715 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 220197 distance : 0.905 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 220197 distance : 0.874 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 220197 distance : 0.958 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 220197 distance : 1.602 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 220197 distance : 1.690 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 220197)



  • Original Kopparapu Recent Venus for Star HD 220197 distance : 0.714 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 220197 distance : 0.930 AU
  • Original Kopparapu Moist Greenhouse for Star HD 220197 distance : 0.945 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 220197 distance : 1.630 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 220197 distance : 1.696 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 220197)



    (Position in Stellar Map of star HD 220197 and its Exoplanet HD 220197 b)



    (Zoomed position in Stellar Map of star HD 220197 and its Exoplanet HD 220197 b (zoom level 3))

    (Synthetic Spectrum of star HD 220197*)
    *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