Imaginary Picture of Kepler-17 b
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Exoplanet Name : Kepler-17 b
Alternate Name :
Radius (Rjup / Re): 1.3120 (Rjup) 14.7062 (Rearth)
Mass (Mjup / Me): 2.4500 (Mjup) 778.9481 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0259 (AU) 0.0259 (AU Est.)
Eccentricity : 0.0110
Orbital Period(Yrs) 0.0041
Orbital Period(Observed/Estimated) 1.49 (Days Obs.) 1.41 (Days Est.)
Star Radiation at Atmospheric Boundary: 1989676.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1676.2 (K)
Blackbody T 0.3(K) 1574.2 (K)
Blackbody T 0.7(K) 1273.7 (K)
Tidally Locked Blackbody T 0.1(K) 1993.4 (K)
Tidally Locked Blackbody T 0.3(K) 1872.0 (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-17
Alternate Name :
Star Distance(LY) : 2349.8
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 1.8 (GY)
Temperature : 5722 (K)
Spectral type : G2V
Metalicity : 0.3
Absolute Magnitude: 4.7
Apparent Magnitude: 14.0
Right Ascension(RA) 298.3953
Declination (DEC) 47.8150
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors CUTRI R.M.; SKRUTSKIE M.F.; VAN DYK S.; BEICHMAN C.A.; CARPENTER J.M.; CHESTER T.; CAMBRESY L.; EVANS T.; FOWLER J.; GIZIS J.; HOWARD E.; HUCHRA J.; JARRETT T.; KOPAN E.L.; KIRKPATRICK J.D.; LIGHT R.M.; MARSH K.A.; McCALLON H.; SCHNEIDER S.; STIENING R.; SYKES M.; WEINBERG M.; WHEATON W.A.; WHEELOCK S.; ZACARIAS N.
Discovery Paper - Title 2MASS All Sky Catalog of point sources.
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-17+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-17%20b/
Kepler-17 b
Kepler-17 b

  • Kepler-17 b is an exoplanet orbiting the star Kepler-17, located about 2349.8 light-years (720.5 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star Kepler-17 has apparent magnitude of 14.0, with absolute magnitude of 4.7.
  • It is 1.2 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5722 with its spectral types of G2V
  • In this planetary system, the extrasolar planet Kepler-17 b orbits around the star Kepler-17 every 1.5 days with its orbital distance of 0.03 AU ( 3876080.8 km)
  • (Projected orbit of Kepler-17 b around its host star Kepler-17)


  • The Star Kepler-17 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.715 AU ( 106958265.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.988 AU ( 147844274.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.506 AU ( 225281956.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.216 AU ( 331512267.8 km)
  • Radiation at Planetary Boundary of Kepler-17 b : 1989676.46 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-17)



  • Kopparapu Recent Venus for Star Kepler-17 distance : 0.744 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-17 distance : 0.942 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-17 distance : 0.909 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-17 distance : 0.997 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-17 distance : 1.665 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-17 distance : 1.756 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-17)



  • Original Kopparapu Recent Venus for Star Kepler-17 distance : 0.744 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-17 distance : 0.968 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-17 distance : 0.984 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-17 distance : 1.694 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-17 distance : 1.762 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-17)



    (Position in Stellar Map of star Kepler-17 and its Exoplanet Kepler-17 b)



    (Zoomed position in Stellar Map of star Kepler-17 and its Exoplanet Kepler-17 b (zoom level 3))