Imaginary Picture of HD 185269 A b
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Exoplanet Name : HD 185269 A b
Alternate Name : HD 185269 b
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.9400 (Mjup) 298.8617 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0770 (AU) 0.0770 (AU Est.)
Eccentricity : 0.3000
Orbital Period(Yrs) 0.0187
Orbital Period(Observed/Estimated) 6.84 (Days Obs.) 6.90 (Days Est.)
Star Radiation at Atmospheric Boundary: 934854.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1387.8 (K)
Blackbody T 0.3(K) 1303.3 (K)
Blackbody T 0.7(K) 1054.5 (K)
Tidally Locked Blackbody T 0.1(K) 1650.4 (K)
Tidally Locked Blackbody T 0.3(K) 1549.9 (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 185269 A
Alternate Name : HD 185269
Star Distance(LY) : 170.8
Stellar Radius(Rsun) : 1.9 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 4.2 (GY)
Temperature : 5980 (K)
Spectral type : G0IV
Metalicity : 0.1
Absolute Magnitude: 3.1
Apparent Magnitude: 6.7
Right Ascension(RA) 294.2989
Declination (DEC) 28.5000
Hubble Space Telescope Guide Star Catalog (GSC) ID 02150-05013
Discovered by
Discovery Paper - Authors "Johnson,ohnsher; Marcy,eoffrey.; Fischer,ebra.; Henry,regory.; Wright,ason.; Isaacson,oward; McCarthy,hris"
Discovery Paper - Title An Eccentric Hot Jupiter Orbiting the Subgiant HD 185269
Discovery Paper - Journal "The Astrophysical Journal, Volume 652, Number 2"
Discovery Paper - URL http://iopscience.iop.org/article/10.1086/508255/meta
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+185269+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20185269%20b/
HD 185269 A b
HD 185269 A b

  • HD 185269 A b is an exoplanet orbiting the star HD 185269 A, located about 170.8 light-years (52.4 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star HD 185269 A has apparent magnitude of 6.7, with absolute magnitude of 3.1.
  • It is 1.3 times more massive and 1.9 times bigger compared with our Sun. The surface temperature is 5980 with its spectral types of G0IV
  • In this planetary system, the extrasolar planet HD 185269 A b orbits around the star HD 185269 A every 6.8 days with its orbital distance of 0.08 AU ( 11519036.0 km)
  • (Projected orbit of HD 185269 A b around its host star HD 185269 A)


  • The Star HD 185269 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.456 AU ( 217880483.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.013 AU ( 301167766.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.068 AU ( 458913028.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.514 AU ( 675310624.7 km)
  • Radiation at Planetary Boundary of HD 185269 A b : 934854.01 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 185269 A)



  • Kopparapu Recent Venus for Star HD 185269 A distance : 1.491 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 185269 A distance : 1.888 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 185269 A distance : 1.824 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 185269 A distance : 1.999 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 185269 A distance : 3.318 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 185269 A distance : 3.499 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 185269 A)



  • Original Kopparapu Recent Venus for Star HD 185269 A distance : 1.499 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 185269 A distance : 1.939 AU
  • Original Kopparapu Moist Greenhouse for Star HD 185269 A distance : 1.984 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 185269 A distance : 3.377 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 185269 A distance : 3.512 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 185269 A)



    (Position in Stellar Map of star HD 185269 A and its Exoplanet HD 185269 A b)



    (Zoomed position in Stellar Map of star HD 185269 A and its Exoplanet HD 185269 A b (zoom level 3))