Imaginary Picture of HD 213240 b

Display orbital revolution of HD 213240 b around the hoststar HD 213240
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Exoplanet Name : HD 213240 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 4.5000 (Mjup) 1430.7210 (Mearth)
Semi Major Axis / Orbital Distance Calculated 2.0300 (AU) 2.0300 (AU Est.)
Eccentricity : 0.4500
Orbital Period(Yrs) 2.6036
Orbital Period(Observed/Estimated) 951.00 (Days Obs.) 956.43 (Days Est.)
Star Radiation at Atmospheric Boundary: 853.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 241.2 (K)
Blackbody T 0.3(K) 226.5 (K)
Blackbody T 0.7(K) 183.3 (K)
Tidally Locked Blackbody T 0.1(K) 286.9 (K)
Tidally Locked Blackbody T 0.3(K) 269.4 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 213240
Alternate Name :
Star Distance(LY) : 132.5
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 5.1 (GY)
Temperature : 5975 (K)
Spectral type : G4 IV
Metalicity : 0.2
Absolute Magnitude: 3.8
Apparent Magnitude: 6.8
Right Ascension(RA) 337.7515
Declination (DEC) -49.4331
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "M. Mugrauer, R. Neuhaeuser, A. Seifahrt, T. Mazeh, E. Guenther"
Discovery Paper - Title Four new wide binaries among exoplanet host stars
Discovery Paper - Journal "A&A 440, 1051-1060 (2005) DOI: 10.1051/0004-6361:20042297"
Discovery Paper - URL http://www.aanda.org/articles/aa/ps/2005/36/aa2297-04.ps.gz
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+213240+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20213240%20A%20b/
HD 213240 b
HD 213240 b

  • HD 213240 b is an exoplanet orbiting the star HD 213240, located about 132.5 light-years (40.6 pc) away from Solar System. Its discovery was publicly announced on 2001.
  • The host star HD 213240 has apparent magnitude of 6.8, with absolute magnitude of 3.8.
  • It is 1.2 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5975 with its spectral types of G4 IV
  • In this planetary system, the extrasolar planet HD 213240 b orbits around the star HD 213240 every 951.0 days with its orbital distance of 2.03 AU ( 303683677.5 km)
  • (Projected orbit of HD 213240 b around its host star HD 213240)


  • The Star HD 213240 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.160 AU ( 173550228.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.604 AU ( 239891770.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.443 AU ( 365541970.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.596 AU ( 537911022.5 km)
  • Radiation at Planetary Boundary of HD 213240 b : 853.39 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 213240)



  • Kopparapu Recent Venus for Star HD 213240 distance : 1.188 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 213240 distance : 1.505 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 213240 distance : 1.453 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 213240 distance : 1.593 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 213240 distance : 2.644 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 213240 distance : 2.789 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 213240)



  • Original Kopparapu Recent Venus for Star HD 213240 distance : 1.194 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 213240 distance : 1.545 AU
  • Original Kopparapu Moist Greenhouse for Star HD 213240 distance : 1.581 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 213240 distance : 2.691 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 213240 distance : 2.798 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 213240)



    (Position in Stellar Map of star HD 213240 and its Exoplanet HD 213240 b)



    (Zoomed position in Stellar Map of star HD 213240 and its Exoplanet HD 213240 b (zoom level 3))