Imaginary Picture of HD 208527 b
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Exoplanet Name : HD 208527 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 9.9000 (Mjup) 3147.5862 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.1000 (AU) 2.1000 (AU Est.)
Eccentricity : 0.0800
Orbital Period(Yrs) 2.3969
Orbital Period(Observed/Estimated) 875.50 (Days Obs.) 878.74 (Days Est.)
Star Radiation at Atmospheric Boundary: 192478.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 934.8 (K)
Blackbody T 0.3(K) 877.9 (K)
Blackbody T 0.7(K) 710.3 (K)
Tidally Locked Blackbody T 0.1(K) 1111.7 (K)
Tidally Locked Blackbody T 0.3(K) 1044.0 (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 208527
Alternate Name :
Star Distance(LY) : 1315.1
Stellar Radius(Rsun) : 51.1 (Rsun Measured)
Stellar Mass(Msun) : 1.6 (Msun Measured) 1.6 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 4035 (K)
Spectral type : M1III
Metalicity : -0.1
Absolute Magnitude: -1.6
Apparent Magnitude: 6.4
Right Ascension(RA) 329.0999
Declination (DEC) 21.2400
Hubble Space Telescope Guide Star Catalog (GSC) ID 01691-01788
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+208527+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20208527%20b/
HD 208527 b
HD 208527 b

  • HD 208527 b is an exoplanet orbiting the star HD 208527, located about 1315.1 light-years (403.2 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star HD 208527 has apparent magnitude of 6.4, with absolute magnitude of -1.6.
  • It is 1.6 times more massive and 51.1 times bigger compared with our Sun. The surface temperature is 4035 with its spectral types of M1III
  • In this planetary system, the extrasolar planet HD 208527 b orbits around the star HD 208527 every 875.5 days with its orbital distance of 2.10 AU ( 314155528.5 km)
  • (Projected orbit of HD 208527 b around its host star HD 208527)


  • The Star HD 208527 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 18.024 AU ( 2696286831.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 24.913 AU ( 3726973025.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 37.962 AU ( 5679082113.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 55.863 AU ( 8357018115.0 km)
  • Radiation at Planetary Boundary of HD 208527 b : 192478.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 208527)



  • Kopparapu Recent Venus for Star HD 208527 distance : 20.176 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 208527 distance : 25.537 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 208527 distance : 24.664 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 208527 distance : 27.109 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 208527 distance : 48.378 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 208527 distance : 51.037 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 208527)



  • Original Kopparapu Recent Venus for Star HD 208527 distance : 19.927 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 208527 distance : 26.404 AU
  • Original Kopparapu Moist Greenhouse for Star HD 208527 distance : 26.366 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 208527 distance : 49.153 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 208527 distance : 51.118 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 208527)



    (Position in Stellar Map of star HD 208527 and its Exoplanet HD 208527 b)



    (Zoomed position in Stellar Map of star HD 208527 and its Exoplanet HD 208527 b (zoom level 3))