Imaginary Picture of Kepler-318 b

Display orbital revolution of Kepler-318 b around the hoststar Kepler-318
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Exoplanet Name : Kepler-318 b
Alternate Name : "2MASS J19535587+4647370 b, K01779.01, KIC 9909735 b, KOI-1779 b, KOI-1779.01, WISE J195355.88+464737.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.4200 (Rjup) 4.7078 (Rearth)
Mass (Mjup / Me): 0.0726 (Mjup) 23.0897 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0560 (AU) 0.0560 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0128
Orbital Period(Observed/Estimated) 4.66 (Days Obs.) 4.72 (Days Est.)
Surface Gravity (G Earth) 1.0418
Star Radiation at Atmospheric Boundary: 448633.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1155.1 (K)
Blackbody T 0.3(K) 1084.7 (K)
Blackbody T 0.7(K) 877.7 (K)
Tidally Locked Blackbody T 0.1(K) 1373.6 (K)
Tidally Locked Blackbody T 0.3(K) 1290.0 (K)
Size Class: 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-318
Alternate Name : "2MASS J19535587+4647370, KIC 9909735, KOI-1779, WISE J195355.88+464737.1"
Star Distance(LY) : 1594.7
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5873 (K)
Spectral type : G3
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 3.7
Apparent Magnitude: 12.1
Right Ascension(RA) 298.4828
Declination (DEC) 46.7936
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-318+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-318%20b/
Kepler-318 b
Kepler-318 b
  • Kepler-318 b is an exoplanet orbiting the star Kepler-318, located about 1594.7 light-years (488.9 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-318 has apparent magnitude of 12.1, with absolute magnitude of 3.7.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5873 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-318 b orbits around the star Kepler-318 every 4.7 days with its orbital distance of 0.06 AU ( 8377480.8 km)
    • (Projected orbit of Kepler-318 b around its host star Kepler-318)


  • The Star Kepler-318 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.734 AU ( 109771500.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.014 AU ( 151732900.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.546 AU ( 231207362.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.274 AU ( 340231762.4 km)
  • Radiation at Planetary Boundary of Kepler-318 b : 448633.54 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-318)



  • Kopparapu Recent Venus for Star Kepler-318 distance : 0.756 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-318 distance : 0.958 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-318 distance : 0.925 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-318 distance : 1.014 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-318 distance : 1.687 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-318 distance : 1.779 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-318)



  • Original Kopparapu Recent Venus for Star Kepler-318 distance : 0.759 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-318 distance : 0.984 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-318 distance : 1.004 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-318 distance : 1.717 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-318 distance : 1.785 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-318)



    (Position in Stellar Map of star Kepler-318 and its Exoplanet Kepler-318 b)



    (Zoomed position in Stellar Map of star Kepler-318 and its Exoplanet Kepler-318 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-318*)
    *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