Imaginary Picture of Kepler-1717 b

Display orbital revolution of Kepler-1717 b around the hoststar Kepler-1717
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Exoplanet Name : Kepler-1717 b
Alternate Name : "KOI-353 b, KOI-353.022"
Status : Confirmed
Radius (Rjup / Re): 0.2667 (Rjup) 2.9890 (Rearth)
Mass (Mjup / Me): 0.0230 (Mjup) 7.3038 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2014 (AU) 0.2014 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0839
Orbital Period(Observed/Estimated) 30.65 (Days Obs.) 28.20 (Days Est.)
Surface Gravity (G Earth) 0.8175
Star Radiation at Atmospheric Boundary: 131299.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 849.6 (K)
Blackbody T 0.3(K) 797.9 (K)
Blackbody T 0.7(K) 645.5 (K)
Tidally Locked Blackbody T 0.1(K) 1010.3 (K)
Tidally Locked Blackbody T 0.3(K) 948.8 (K)
Size Class: sub-Neptune-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-1717
Alternate Name : "11566064, KOI-353, 2MASS J19405104+4933438"
Star Distance(LY) : 3290.2
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.3 (GY)
Temperature : 6591 (K)
Spectral type : F5IV-V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 3.2
Apparent Magnitude: 13.3
Right Ascension(RA) 295.2127
Declination (DEC) 49.5622
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-1717 b
Kepler-1717 b

  • Kepler-1717 b is an exoplanet orbiting the star Kepler-1717, located about 3290.2 light-years (1008.8 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1717 has apparent magnitude of 13.3, with absolute magnitude of 3.2.
  • It is 1.4 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 6591 with its spectral types of F5IV-V
  • In this planetary system, the extrasolar planet Kepler-1717 b orbits around the star Kepler-1717 every 30.7 days with its orbital distance of 0.20 AU ( 30129011.2 km)
  • (Projected orbit of Kepler-1717 b around its host star Kepler-1717)


  • The Star Kepler-1717 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.428 AU ( 213572984.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.973 AU ( 295213677.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.007 AU ( 449840314.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.425 AU ( 661959728.8 km)
  • Radiation at Planetary Boundary of Kepler-1717 b : 131299.26 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1717)



  • Kopparapu Recent Venus for Star Kepler-1717 distance : 1.409 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1717 distance : 1.785 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1717 distance : 1.724 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1717 distance : 1.888 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1717 distance : 3.101 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1717 distance : 3.271 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1717)



  • Original Kopparapu Recent Venus for Star Kepler-1717 distance : 1.436 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1717 distance : 1.829 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1717 distance : 1.900 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1717 distance : 3.157 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1717 distance : 3.283 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1717)



    (Position in Stellar Map of star Kepler-1717 and its Exoplanet Kepler-1717 b)



    (Zoomed position in Stellar Map of star Kepler-1717 and its Exoplanet Kepler-1717 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1717*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102