Imaginary Picture of HD 39194 d
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Exoplanet Name : HD 39194 d
Alternate Name :
Radius (Rjup / Re): 0.1374 (Rjup) 1.5400 (Rearth)
Mass (Mjup / Me): 0.0162 (Mjup) 5.1506 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1720 (AU) 0.1720 (AU Est.)
Eccentricity : 0.2000
Orbital Period(Yrs) 0.0929
Orbital Period(Observed/Estimated) 33.94 (Days Obs.) 23.70 (Days Est.)
Star Radiation at Atmospheric Boundary: 17556.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 513.8 (K)
Blackbody T 0.3(K) 482.5 (K)
Blackbody T 0.7(K) 390.4 (K)
Tidally Locked Blackbody T 0.1(K) 611.0 (K)
Tidally Locked Blackbody T 0.3(K) 573.8 (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 39194
Alternate Name :
Star Distance(LY) : 84.5
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5240 (K)
Spectral type : K0V
Metalicity : 0.0
Absolute Magnitude: 6.0
Apparent Magnitude: 8.1
Right Ascension(RA) 86.1333
Declination (DEC) -70.1436
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2039194%20d/
HD 39194 d
HD 39194 d

  • HD 39194 d is an exoplanet orbiting the star HD 39194, located about 84.5 light-years (25.9 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 39194 has apparent magnitude of 8.1, with absolute magnitude of 6.0.
  • It is 1.2 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 5240 with its spectral types of K0V
  • In this planetary system, the extrasolar planet HD 39194 d orbits around the star HD 39194 every 33.9 days with its orbital distance of 0.17 AU ( 25730833.8 km)
  • (Projected orbit of HD 39194 d around its host star HD 39194)


  • The Star HD 39194 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.446 AU ( 66696798.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.616 AU ( 92192405.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.939 AU ( 140480823.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.382 AU ( 206723685.3 km)
  • Radiation at Planetary Boundary of HD 39194 d : 17556.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 39194)



  • Kopparapu Recent Venus for Star HD 39194 distance : 0.476 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 39194 distance : 0.603 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 39194 distance : 0.583 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 39194 distance : 0.639 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 39194 distance : 1.084 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 39194 distance : 1.143 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 39194)



  • Original Kopparapu Recent Venus for Star HD 39194 distance : 0.473 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 39194 distance : 0.621 AU
  • Original Kopparapu Moist Greenhouse for Star HD 39194 distance : 0.626 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 39194 distance : 1.102 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 39194 distance : 1.146 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 39194)



    (Position in Stellar Map of star HD 39194 and its Exoplanet HD 39194 d)



    (Zoomed position in Stellar Map of star HD 39194 and its Exoplanet HD 39194 d (zoom level 3))