Imaginary Picture of HD 81040 b

Display orbital revolution of HD 81040 b around the hoststar HD 81040
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Exoplanet Name : HD 81040 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.8600 (Mjup) 2181.0547 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.9400 (AU) 1.9400 (AU Est.)
Eccentricity : 0.5260
Orbital Period(Yrs) 2.7424
Orbital Period(Observed/Estimated) 1001.70 (Days Obs.) 1007.30 (Days Est.)
Star Radiation at Atmospheric Boundary: 254.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 178.2 (K)
Blackbody T 0.3(K) 167.4 (K)
Blackbody T 0.7(K) 135.4 (K)
Tidally Locked Blackbody T 0.1(K) 212.0 (K)
Tidally Locked Blackbody T 0.3(K) 199.1 (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 81040
Alternate Name :
Star Distance(LY) : 111.9
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.2 (GY)
Temperature : 5700 (K)
Spectral type : G2/G3
Metalicity : -0.2
Absolute Magnitude: 5.0
Apparent Magnitude: 7.7
Right Ascension(RA) 140.9462
Declination (DEC) 20.3644
Hubble Space Telescope Guide Star Catalog (GSC) ID 01408-00143
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+81040+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2081040%20b/
HD 81040 b
HD 81040 b

  • HD 81040 b is an exoplanet orbiting the star HD 81040, located about 111.9 light-years (34.3 pc) away from Solar System. Its discovery was publicly announced on 2005.
  • The host star HD 81040 has apparent magnitude of 7.7, with absolute magnitude of 5.0.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5700 with its spectral types of G2/G3
  • In this planetary system, the extrasolar planet HD 81040 b orbits around the star HD 81040 every 1001.7 days with its orbital distance of 1.94 AU ( 290219869.2 km)
  • (Projected orbit of HD 81040 b around its host star HD 81040)


  • The Star HD 81040 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.605 AU ( 90553715.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.837 AU ( 125168899.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.275 AU ( 190729703.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.876 AU ( 280667113.3 km)
  • Radiation at Planetary Boundary of HD 81040 b : 254.39 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 81040)



  • Kopparapu Recent Venus for Star HD 81040 distance : 0.630 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 81040 distance : 0.798 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 81040 distance : 0.771 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 81040 distance : 0.845 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 81040 distance : 1.413 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 81040 distance : 1.490 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 81040)



  • Original Kopparapu Recent Venus for Star HD 81040 distance : 0.630 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 81040 distance : 0.820 AU
  • Original Kopparapu Moist Greenhouse for Star HD 81040 distance : 0.834 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 81040 distance : 1.437 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 81040 distance : 1.495 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 81040)



    (Position in Stellar Map of star HD 81040 and its Exoplanet HD 81040 b)



    (Zoomed position in Stellar Map of star HD 81040 and its Exoplanet HD 81040 b (zoom level 3))