Imaginary Picture of HD 47186 b
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Exoplanet Name : HD 47186 b
Alternate Name :
Radius (Rjup / Re): 0.2376 (Rjup) 2.6628 (Rearth)
Mass (Mjup / Me): 0.0717 (Mjup) 22.7866 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0500 (AU) 0.0500 (AU Est.)
Eccentricity : 0.0380
Orbital Period(Yrs) 0.0112
Orbital Period(Observed/Estimated) 4.08 (Days Obs.) 4.10 (Days Est.)
Star Radiation at Atmospheric Boundary: 492878.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1182.6 (K)
Blackbody T 0.3(K) 1110.6 (K)
Blackbody T 0.7(K) 898.6 (K)
Tidally Locked Blackbody T 0.1(K) 1406.3 (K)
Tidally Locked Blackbody T 0.3(K) 1320.7 (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 47186
Alternate Name :
Star Distance(LY) : 122.1
Stellar Radius(Rsun) : 1.0 (Rsun Estimated)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5675 (K)
Spectral type : G5V
Metalicity : 0.2
Absolute Magnitude: 4.9
Apparent Magnitude: 7.8
Right Ascension(RA) 99.0366
Declination (DEC) -27.6222
Hubble Space Telescope Guide Star Catalog (GSC) ID
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+47186+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2047186%20b/
HD 47186 b
HD 47186 b

  • HD 47186 b is an exoplanet orbiting the star HD 47186, located about 122.1 light-years (37.4 pc) away from Solar System. Its discovery was publicly announced on 2008.
  • The host star HD 47186 has apparent magnitude of 7.8, with absolute magnitude of 4.9.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5675 with its spectral types of G5V
  • In this planetary system, the extrasolar planet HD 47186 b orbits around the star HD 47186 every 4.1 days with its orbital distance of 0.05 AU ( 7479893.5 km)
  • (Projected orbit of HD 47186 b around its host star HD 47186)


  • The Star HD 47186 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.687 AU ( 102729603.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.949 AU ( 141999158.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.446 AU ( 216375292.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.128 AU ( 318405722.1 km)
  • Radiation at Planetary Boundary of HD 47186 b : 492878.41 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 47186)



  • Kopparapu Recent Venus for Star HD 47186 distance : 0.716 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 47186 distance : 0.907 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 47186 distance : 0.876 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 47186 distance : 0.960 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 47186 distance : 1.606 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 47186 distance : 1.694 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 47186)



  • Original Kopparapu Recent Venus for Star HD 47186 distance : 0.716 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 47186 distance : 0.932 AU
  • Original Kopparapu Moist Greenhouse for Star HD 47186 distance : 0.947 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 47186 distance : 1.634 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 47186 distance : 1.699 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 47186)



    (Position in Stellar Map of star HD 47186 and its Exoplanet HD 47186 b)



    (Zoomed position in Stellar Map of star HD 47186 and its Exoplanet HD 47186 b (zoom level 3))