Imaginary Picture of Kepler-731 b
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Exoplanet Name : Kepler-731 b
Alternate Name :
Radius (Rjup / Re): 1.2380 (Rjup) 13.8767 (Rearth)
Mass (Mjup / Me): 1.8599 (Mjup) 591.3345 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0486 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0106
Orbital Period(Observed/Estimated) 3.86 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 674655.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1279.1 (K)
Blackbody T 0.3(K) 1201.2 (K)
Blackbody T 0.7(K) 971.9 (K)
Tidally Locked Blackbody T 0.1(K) 1521.1 (K)
Tidally Locked Blackbody T 0.3(K) 1428.5 (K)
Size Class: Super-Jupiter-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-731
Alternate Name :
Star Distance(LY) : 4106.1
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6031 (K)
Spectral type : G2
Metalicity : 0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 14.1
Right Ascension(RA) 296.3932
Declination (DEC) 45.5686
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 623 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-731%20b/
Kepler-731 b
Kepler-731 b

  • Kepler-731 b is an exoplanet orbiting the star Kepler-731, located about 4106.1 light-years (1258.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-731 has apparent magnitude of 14.1, with absolute magnitude of 3.6.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 6031 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-731 b orbits around the star Kepler-731 every 3.9 days with its orbital distance of 0.05 AU ( 7270081.0 km)
  • (Projected orbit of Kepler-731 b around its host star Kepler-731)


  • The Star Kepler-731 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.781 AU ( 116818176.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.079 AU ( 161473248.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.645 AU ( 246049496.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.420 AU ( 362072613.4 km)
  • Radiation at Planetary Boundary of Kepler-731 b : 674655.02 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-731)



  • Kopparapu Recent Venus for Star Kepler-731 distance : 0.797 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-731 distance : 1.009 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-731 distance : 0.975 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-731 distance : 1.068 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-731 distance : 1.771 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-731 distance : 1.868 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-731)



  • Original Kopparapu Recent Venus for Star Kepler-731 distance : 0.802 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-731 distance : 1.036 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-731 distance : 1.061 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-731 distance : 1.803 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-731 distance : 1.875 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-731)



    (Position in Stellar Map of star Kepler-731 and its Exoplanet Kepler-731 b)



    (Zoomed position in Stellar Map of star Kepler-731 and its Exoplanet Kepler-731 b (zoom level 3))