Imaginary Picture of HD 85512 b
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Exoplanet Name : HD 85512 b
Alternate Name :
Radius (Rjup / Re): 0.1244 (Rjup) 1.3945 (Rearth)
Mass (Mjup / Me): 0.0110 (Mjup) 3.4973 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2600 (AU) 0.2600 (AU Est.)
Eccentricity : 0.1100
Orbital Period(Yrs) 0.1600
Orbital Period(Observed/Estimated) 58.43 (Days Obs.) 58.29 (Days Est.)
Star Radiation at Atmospheric Boundary: 3264.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 337.4 (K)
Blackbody T 0.3(K) 316.8 (K)
Blackbody T 0.7(K) 256.3 (K)
Tidally Locked Blackbody T 0.1(K) 401.2 (K)
Tidally Locked Blackbody T 0.3(K) 376.8 (K)
Size Class: super-Earth-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 85512
Alternate Name :
Star Distance(LY) : 36.4
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 5.6 (GY)
Temperature : 4715 (K)
Spectral type : K5V
Metalicity : -0.3
Absolute Magnitude: 7.4
Apparent Magnitude: 7.7
Right Ascension(RA) 147.7794
Declination (DEC) -43.5028
Hubble Space Telescope Guide Star Catalog (GSC) ID 07706-01752
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+85512+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2085512%20b/
HD 85512 b
HD 85512 b

  • HD 85512 b is an exoplanet orbiting the star HD 85512, located about 36.4 light-years (11.2 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 85512 has apparent magnitude of 7.7, with absolute magnitude of 7.4.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 4715 with its spectral types of K5V
  • In this planetary system, the extrasolar planet HD 85512 b orbits around the star HD 85512 every 58.4 days with its orbital distance of 0.26 AU ( 38895446.4 km)
  • (Projected orbit of HD 85512 b around its host star HD 85512)


  • The Star HD 85512 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.291 AU ( 43477168.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.402 AU ( 60096808.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.612 AU ( 91574236.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.901 AU ( 134755500.5 km)
  • Radiation at Planetary Boundary of HD 85512 b : 3264.86 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 85512)



  • Kopparapu Recent Venus for Star HD 85512 distance : 0.318 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 85512 distance : 0.403 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 85512 distance : 0.389 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 85512 distance : 0.427 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 85512 distance : 0.739 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 85512 distance : 0.780 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 85512)



  • Original Kopparapu Recent Venus for Star HD 85512 distance : 0.314 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 85512 distance : 0.416 AU
  • Original Kopparapu Moist Greenhouse for Star HD 85512 distance : 0.416 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 85512 distance : 0.752 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 85512 distance : 0.782 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 85512)



    (Position in Stellar Map of star HD 85512 and its Exoplanet HD 85512 b)



    (Zoomed position in Stellar Map of star HD 85512 and its Exoplanet HD 85512 b (zoom level 3))