Imaginary Picture of Kepler-23 b
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Exoplanet Name : Kepler-23 b
Alternate Name :
Radius (Rjup / Re): 0.1511 (Rjup) 1.6937 (Rearth)
Mass (Mjup / Me): 0.0478 (Mjup) 15.1974 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0750 (AU) 0.0750 (AU Est.)
Eccentricity : 0.0600
Orbital Period(Yrs) 0.0195
Orbital Period(Observed/Estimated) 7.11 (Days Obs.) 7.12 (Days Est.)
Star Radiation at Atmospheric Boundary: 581392.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1232.4 (K)
Blackbody T 0.3(K) 1157.4 (K)
Blackbody T 0.7(K) 936.4 (K)
Tidally Locked Blackbody T 0.1(K) 1465.6 (K)
Tidally Locked Blackbody T 0.3(K) 1376.4 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-23
Alternate Name :
Star Distance(LY) : 2724.5
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5823 (K)
Spectral type : G3
Metalicity : 0.0
Absolute Magnitude: 4.4
Apparent Magnitude: 14.0
Right Ascension(RA) 294.2167
Declination (DEC) 49.4792
Hubble Space Telescope Guide Star Catalog (GSC) ID 03564-01806
Discovered by
Discovery Paper - Authors "Eric B. Ford, Daniel C. Fabrycky, Jason H. Steffen, Joshua A. Carter,Francois Fressin, Matthew J. Holman, Jack J. Lissauer, Althea V. Moorhead, Robert C. Morehead, Darin Ragozzine"
Discovery Paper - Title TRANSIT TIMING OBSERVATIONS FROM KEPLER. II. CONFIRMATION OF TWO MULTIPLANET SYSTEMS VIA A NON-PARAMETRIC CORRELATION ANALYSIS
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-23+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-23%20b/
Kepler-23 b
Kepler-23 b

  • Kepler-23 b is an exoplanet orbiting the star Kepler-23, located about 2724.5 light-years (835.3 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star Kepler-23 has apparent magnitude of 14.0, with absolute magnitude of 4.4.
  • It is 1.1 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5823 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-23 b orbits around the star Kepler-23 every 7.1 days with its orbital distance of 0.07 AU ( 11219840.3 km)
  • (Projected orbit of Kepler-23 b around its host star Kepler-23)


  • The Star Kepler-23 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.119 AU ( 167359972.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.546 AU ( 231335218.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.356 AU ( 352503678.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.467 AU ( 518724605.3 km)
  • Radiation at Planetary Boundary of Kepler-23 b : 581392.27 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-23)



  • Kopparapu Recent Venus for Star Kepler-23 distance : 1.156 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-23 distance : 1.464 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-23 distance : 1.414 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-23 distance : 1.551 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-23 distance : 2.583 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-23 distance : 2.724 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-23)



  • Original Kopparapu Recent Venus for Star Kepler-23 distance : 1.159 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-23 distance : 1.505 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-23 distance : 1.533 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-23 distance : 2.628 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-23 distance : 2.733 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-23)



    (Position in Stellar Map of star Kepler-23 and its Exoplanet Kepler-23 b)



    (Zoomed position in Stellar Map of star Kepler-23 and its Exoplanet Kepler-23 b (zoom level 3))