Imaginary Picture of Kepler-13 A b
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Exoplanet Name : Kepler-13 A b
Alternate Name : "KOI-13.01, Kepler-13 b, KOI-13 b"
Radius (Rjup / Re): 2.0420 (Rjup) 22.8888 (Rearth)
Mass (Mjup / Me): 7.9500 (Mjup) 2527.6071 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0363 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0048
Orbital Period(Observed/Estimated) 1.76 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 31612417.8 (W/m2)
Measured Temperature (K) 2750.0 (K)
Blackbody T 0.1(K) 3346.6 (K)
Blackbody T 0.3(K) 3142.8 (K)
Blackbody T 0.7(K) 2542.9 (K)
Tidally Locked Blackbody T 0.1(K) 3979.8 (K)
Tidally Locked Blackbody T 0.3(K) 3737.5 (K)
Size Class: Sub-Star-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-13 A
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 2.5 (Rsun Measured)
Stellar Mass(Msun) : 2.0 (Msun Measured) 2.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 8500 (K)
Spectral type : A4
Metalicity : -0.1
Absolute Magnitude: 25.0
Apparent Magnitude: 10.0
Right Ascension(RA) 286.9708
Declination (DEC) 46.8683
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Santerne, A.; Moutou, C.; Barros, S. C. C.; Damiani, C.; D_az, R. F.; Almenara, J.-M.; Bonomo, A. S.; Bouchy, F.; Deleuil, M.; H_brard, G."
Discovery Paper - Title SOPHIE velocimetry of Kepler transit candidates. VI. An additional companion in the KOI-13 system
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-13+A+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-13%20A%20b/
Kepler-13 A b
Kepler-13 A b

  • Kepler-13 A b is an exoplanet orbiting the star Kepler-13 A. Its discovery was publicly announced on 2011.
  • The host star Kepler-13 A has apparent magnitude of 10.0, with absolute magnitude of 25.0.
  • It is 2.0 times more massive and 2.5 times bigger compared with our Sun. The surface temperature is 8500 with its spectral types of A4
  • In this planetary system, the extrasolar planet Kepler-13 A b orbits around the star Kepler-13 A every 1.8 days with its orbital distance of 0.04 AU ( 5428464.4 km)
  • (Projected orbit of Kepler-13 A b around its host star Kepler-13 A)


  • The Star Kepler-13 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 3.991 AU ( 597084977.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 5.517 AU ( 825327475.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 8.407 AU ( 1257616427.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 12.371 AU ( 1850637666.3 km)
  • Radiation at Planetary Boundary of Kepler-13 A b : 31612417.81 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-13 A)



  • Kopparapu Recent Venus for Star Kepler-13 A distance : 3.797 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-13 A distance : 4.811 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-13 A distance : 4.646 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-13 A distance : 5.081 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-13 A distance : 8.306 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-13 A distance : 8.757 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-13 A)



  • Original Kopparapu Recent Venus for Star Kepler-13 A distance : 3.931 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-13 A distance : 4.903 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-13 A distance : 5.201 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-13 A distance : 8.446 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-13 A distance : 8.783 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-13 A)



    (Position in Stellar Map of star Kepler-13 A and its Exoplanet Kepler-13 A b)



    (Zoomed position in Stellar Map of star Kepler-13 A and its Exoplanet Kepler-13 A b (zoom level 3))