Imaginary Picture of HD 113538 b

Display orbital revolution of HD 113538 b around the hoststar HD 113538
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Exoplanet Name : HD 113538 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.3600 (Mjup) 114.4577 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.2400 (AU) 1.2400 (AU Est.)
Eccentricity : 0.1400
Orbital Period(Yrs) 1.8157
Orbital Period(Observed/Estimated) 663.20 (Days Obs.) 659.39 (Days Est.)
Surface Gravity (G Earth) 1.1054
Star Radiation at Atmospheric Boundary: 88.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 137.0 (K)
Blackbody T 0.3(K) 128.7 (K)
Blackbody T 0.7(K) 104.1 (K)
Tidally Locked Blackbody T 0.1(K) 162.9 (K)
Tidally Locked Blackbody T 0.3(K) 153.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 113538
Alternate Name :
Star Distance(LY) : 51.7
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 4462 (K)
Spectral type : K9V
UV portion[%]: 1.4
Visible portion[%]: 30.5
IR portion[%]: 68.1
Metalicity : -0.2
Absolute Magnitude: 8.1
Apparent Magnitude: 9.1
Right Ascension(RA) 196.2395
Declination (DEC) -52.4431
Hubble Space Telescope Guide Star Catalog (GSC) ID 08258-02139
Discovered by
Discovery Paper - Authors "C. Moutou, G. Lo Curto, M. Mayor, F. Bouchy, W. Benz, C. Lovis, D. Naef, F. Pepe, D. Queloz, N.C. Santos, D. Segransan, S. G. Sousa, S. Udry"
Discovery Paper - Title The HARPS search for southern extra-solar planets XXXVI: Five new long-period giant planets and a system update
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+113538+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20113538%20b/
HD 113538 b
HD 113538 b

  • HD 113538 b is an exoplanet orbiting the star HD 113538, located about 51.7 light-years (15.9 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HD 113538 has apparent magnitude of 9.1, with absolute magnitude of 8.1.
  • It is 0.6 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 4462 with its spectral types of K9V
  • In this planetary system, the extrasolar planet HD 113538 b orbits around the star HD 113538 every 663.2 days with its orbital distance of 1.24 AU ( 185501359.7 km)
  • (Projected orbit of HD 113538 b around its host star HD 113538)


  • The Star HD 113538 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.229 AU ( 34197402.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.316 AU ( 47269746.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.481 AU ( 72028632.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.709 AU ( 105993288.6 km)
  • Radiation at Planetary Boundary of HD 113538 b : 88.80 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 113538)



  • Kopparapu Recent Venus for Star HD 113538 distance : 0.253 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 113538 distance : 0.320 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 113538 distance : 0.309 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 113538 distance : 0.340 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 113538 distance : 0.594 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 113538 distance : 0.626 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 113538)



  • Original Kopparapu Recent Venus for Star HD 113538 distance : 0.249 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 113538 distance : 0.330 AU
  • Original Kopparapu Moist Greenhouse for Star HD 113538 distance : 0.330 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 113538 distance : 0.604 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 113538 distance : 0.628 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 113538)



    (Position in Stellar Map of star HD 113538 and its Exoplanet HD 113538 b)



    (Zoomed position in Stellar Map of star HD 113538 and its Exoplanet HD 113538 b (zoom level 3))

    (Synthetic Spectrum of star HD 113538*)
    *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