Imaginary Picture of HD 224538 b

Display orbital revolution of HD 224538 b around the hoststar HD 224538
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Exoplanet Name : HD 224538 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 5.9700 (Mjup) 1898.0899 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.2800 (AU) 2.2800 (AU Est.)
Eccentricity : 0.4640
Orbital Period(Yrs) 3.2555
Orbital Period(Observed/Estimated) 1189.10 (Days Obs.) 1013.29 (Days Est.)
Surface Gravity (G Earth) 18.3305
Star Radiation at Atmospheric Boundary: 585.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 219.5 (K)
Blackbody T 0.3(K) 206.2 (K)
Blackbody T 0.7(K) 166.8 (K)
Tidally Locked Blackbody T 0.1(K) 261.1 (K)
Tidally Locked Blackbody T 0.3(K) 245.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 224538
Alternate Name :
Star Distance(LY) : 253.6
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 6097 (K)
Spectral type : F9IV/V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.3
Absolute Magnitude: 3.6
Apparent Magnitude: 8.1
Right Ascension(RA) 359.7157
Declination (DEC) -61.5867
Hubble Space Telescope Guide Star Catalog (GSC) ID 09127-01232
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+224538+&submit=SIMBAD+search
Open Exoplanet Database Link 0
HD 224538 b
HD 224538 b

  • HD 224538 b is an exoplanet orbiting the star HD 224538, located about 253.6 light-years (77.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HD 224538 has apparent magnitude of 8.1, with absolute magnitude of 3.6.
  • It is 1.5 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 6097 with its spectral types of F9IV/V
  • In this planetary system, the extrasolar planet HD 224538 b orbits around the star HD 224538 every 1189.1 days with its orbital distance of 2.28 AU ( 341083145.2 km)
  • (Projected orbit of HD 224538 b around its host star HD 224538)


  • The Star HD 224538 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.079 AU ( 161434108.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.492 AU ( 223144126.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.273 AU ( 340022266.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.345 AU ( 500357661.1 km)
  • Radiation at Planetary Boundary of HD 224538 b : 585.34 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 224538)



  • Kopparapu Recent Venus for Star HD 224538 distance : 1.097 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 224538 distance : 1.389 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 224538 distance : 1.342 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 224538 distance : 1.471 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 224538 distance : 2.434 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 224538 distance : 2.568 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 224538)



  • Original Kopparapu Recent Venus for Star HD 224538 distance : 1.106 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 224538 distance : 1.426 AU
  • Original Kopparapu Moist Greenhouse for Star HD 224538 distance : 1.463 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 224538 distance : 2.478 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 224538 distance : 2.577 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 224538)



    (Position in Stellar Map of star HD 224538 and its Exoplanet HD 224538 b)



    (Zoomed position in Stellar Map of star HD 224538 and its Exoplanet HD 224538 b (zoom level 3))

    (Synthetic Spectrum of star HD 224538*)
    *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