Imaginary Picture of HD 103197 b

Display orbital revolution of HD 103197 b around the hoststar HD 103197
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Exoplanet Name : HD 103197 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2553 (Rjup) 2.8615 (Rearth)
Mass (Mjup / Me): 0.0980 (Mjup) 31.1579 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2490 (AU) 0.2490 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1310
Orbital Period(Observed/Estimated) 47.84 (Days Obs.) 47.84 (Days Est.)
Surface Gravity (G Earth) 3.8052
Star Radiation at Atmospheric Boundary: 11103.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 458.1 (K)
Blackbody T 0.3(K) 430.2 (K)
Blackbody T 0.7(K) 348.1 (K)
Tidally Locked Blackbody T 0.1(K) 544.8 (K)
Tidally Locked Blackbody T 0.3(K) 511.7 (K)
Size Class: sub-Neptune-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 103197
Alternate Name :
Star Distance(LY) : 183.9
Stellar Radius(Rsun) : 0.8 (Rsun Estimated)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 9.1 (GY)
Temperature : 5303 (K)
Spectral type : K1V
UV portion[%]: 5.8
Visible portion[%]: 41.5
IR portion[%]: 52.7
Metalicity : 0.2
Absolute Magnitude: 5.7
Apparent Magnitude: 9.4
Right Ascension(RA) 178.2207
Declination (DEC) -50.2928
Hubble Space Telescope Guide Star Catalog (GSC) ID 08224-00925
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+103197+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20103197%20b/
HD 103197 b
HD 103197 b

  • HD 103197 b is an exoplanet orbiting the star HD 103197, located about 183.9 light-years (56.4 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star HD 103197 has apparent magnitude of 9.4, with absolute magnitude of 5.7.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5303 with its spectral types of K1V
  • In this planetary system, the extrasolar planet HD 103197 b orbits around the star HD 103197 every 47.8 days with its orbital distance of 0.25 AU ( 37249869.8 km)
  • (Projected orbit of HD 103197 b around its host star HD 103197)


  • The Star HD 103197 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.513 AU ( 76784805.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.709 AU ( 106136667.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.081 AU ( 161728792.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.591 AU ( 237991003.6 km)
  • Radiation at Planetary Boundary of HD 103197 b : 11103.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 103197)



  • Kopparapu Recent Venus for Star HD 103197 distance : 0.547 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 103197 distance : 0.692 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 103197 distance : 0.669 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 103197 distance : 0.733 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 103197 distance : 1.241 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 103197 distance : 1.308 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 103197)



  • Original Kopparapu Recent Venus for Star HD 103197 distance : 0.543 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 103197 distance : 0.713 AU
  • Original Kopparapu Moist Greenhouse for Star HD 103197 distance : 0.718 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 103197 distance : 1.262 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 103197 distance : 1.312 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 103197)



    (Position in Stellar Map of star HD 103197 and its Exoplanet HD 103197 b)



    (Zoomed position in Stellar Map of star HD 103197 and its Exoplanet HD 103197 b (zoom level 3))

    (Synthetic Spectrum of star HD 103197*)
    *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