Imaginary Picture of Kepler-447 b
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Exoplanet Name : Kepler-447 b
Alternate Name :
Radius (Rjup / Re): 1.6500 (Rjup) 18.4948 (Rearth)
Mass (Mjup / Me): 1.3700 (Mjup) 435.5751 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0769 (AU) 0.0769 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0213
Orbital Period(Observed/Estimated) 7.79 (Days Obs.) 7.79 (Days Est.)
Star Radiation at Atmospheric Boundary: 151227.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 880.1 (K)
Blackbody T 0.3(K) 826.5 (K)
Blackbody T 0.7(K) 668.8 (K)
Tidally Locked Blackbody T 0.1(K) 1046.7 (K)
Tidally Locked Blackbody T 0.3(K) 982.9 (K)
Size Class: Super-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-447
Alternate Name :
Star Distance(LY) : 874.1
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5620 (K)
Spectral type : G7
Metalicity : 0.1
Absolute Magnitude: 5.4
Apparent Magnitude: 12.5
Right Ascension(RA) 285.2667
Declination (DEC) 48.5600
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "J. Lillo-Box, D. Barrado, N. C. Santos, L. Mancini, P. Figueira, S. Ciceri, Th. Henning"
Discovery Paper - Title Kepler-447b: a hot-Jupiter with an extremely grazing transit
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-447+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-447%20b/
Kepler-447 b
Kepler-447 b

  • Kepler-447 b is an exoplanet orbiting the star Kepler-447, located about 874.1 light-years (268.0 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star Kepler-447 has apparent magnitude of 12.5, with absolute magnitude of 5.4.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5620 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-447 b orbits around the star Kepler-447 every 7.8 days with its orbital distance of 0.08 AU ( 11504076.3 km)
  • (Projected orbit of Kepler-447 b around its host star Kepler-447)


  • The Star Kepler-447 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.585 AU ( 87517894.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.809 AU ( 120972600.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.232 AU ( 184335472.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.813 AU ( 271257722.6 km)
  • Radiation at Planetary Boundary of Kepler-447 b : 151227.10 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-447)



  • Kopparapu Recent Venus for Star Kepler-447 distance : 0.612 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-447 distance : 0.775 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-447 distance : 0.749 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-447 distance : 0.821 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-447 distance : 1.375 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-447 distance : 1.450 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-447)



  • Original Kopparapu Recent Venus for Star Kepler-447 distance : 0.611 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-447 distance : 0.797 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-447 distance : 0.808 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-447 distance : 1.399 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-447 distance : 1.455 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-447)



    (Position in Stellar Map of star Kepler-447 and its Exoplanet Kepler-447 b)



    (Zoomed position in Stellar Map of star Kepler-447 and its Exoplanet Kepler-447 b (zoom level 3))