Imaginary Picture of Kepler-117 b

Display orbital revolution of Kepler-117 b around the hoststar Kepler-117
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Exoplanet Name : Kepler-117 b
Alternate Name : "2MASS J19151032+4802248 b, K00209.02, KIC 10723750 b, KOI-209 b, KOI-209.02, WISE J191510.33+480224.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.7190 (Rjup) 8.0593 (Rearth)
Mass (Mjup / Me): 0.0940 (Mjup) 29.8862 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1445 (AU) 0.1445 (AU Est.)
Eccentricity : 0.0493
Orbital Period(Yrs) 0.0515
Orbital Period(Observed/Estimated) 18.80 (Days Obs.) 18.87 (Days Est.)
Surface Gravity (G Earth) 0.4601
Star Radiation at Atmospheric Boundary: 211059.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 956.6 (K)
Blackbody T 0.3(K) 898.4 (K)
Blackbody T 0.7(K) 726.9 (K)
Tidally Locked Blackbody T 0.1(K) 1137.6 (K)
Tidally Locked Blackbody T 0.3(K) 1068.4 (K)
Size Class: sub-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-117
Alternate Name : "2MASS J19151032+4802248, KIC 10723750, KOI-209, WISE J191510.33+480224.6"
Star Distance(LY) : 4749.0
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 5.3 (GY)
Temperature : 6085 (K)
Spectral type : F8 V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 2.5
Apparent Magnitude: 13.3
Right Ascension(RA) 288.7930
Declination (DEC) 48.0402
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "A. Santerne, C. Moutou, M. Tsantaki, F. Bouchy, G. H_brard, V. Adibekyan, J.-M. Almenara, L. Amard, S. C. C. Barros, I. Boisse, A. S. Bonomo, G. Bruno, B. Courcol, M. Deleuil, O. Demangeon, R. F. D_az, T. Guillot, M. Havel, G. Montagnier, A. S. Rajpurohit, J. Rey, N. C. Santos"
Discovery Paper - Title SOPHIE velocimetry of Kepler transit candidates XVII. The physical properties of giant exoplanets within 400 days of period
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-117+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-117%20b/
Kepler-117 b
Kepler-117 b

  • Kepler-117 b is an exoplanet orbiting the star Kepler-117, located about 4749.0 light-years (1456.1 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-117 has apparent magnitude of 13.3, with absolute magnitude of 2.5.
  • It is 1.1 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6085 with its spectral types of F8 V
  • In this planetary system, the extrasolar planet Kepler-117 b orbits around the star Kepler-117 every 18.8 days with its orbital distance of 0.14 AU ( 21616892.3 km)
  • (Projected orbit of Kepler-117 b around its host star Kepler-117)


  • The Star Kepler-117 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.299 AU ( 194279119.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.795 AU ( 268544514.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.735 AU ( 409202410.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.025 AU ( 602159273.7 km)
  • Radiation at Planetary Boundary of Kepler-117 b : 211059.62 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-117)



  • Kopparapu Recent Venus for Star Kepler-117 distance : 1.321 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-117 distance : 1.673 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-117 distance : 1.616 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-117 distance : 1.771 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-117 distance : 2.933 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-117 distance : 3.093 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-117)



  • Original Kopparapu Recent Venus for Star Kepler-117 distance : 1.331 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-117 distance : 1.717 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-117 distance : 1.762 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-117 distance : 2.985 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-117 distance : 3.104 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-117)



    (Position in Stellar Map of star Kepler-117 and its Exoplanet Kepler-117 b)



    (Zoomed position in Stellar Map of star Kepler-117 and its Exoplanet Kepler-117 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-117*)
    *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