Imaginary Picture of Kepler-238 f

Display orbital revolution of Kepler-238 f around the hoststar Kepler-238
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Exoplanet Name : Kepler-238 f
Alternate Name : "2MASS J19113530+4038161 f, K00834.05, KIC 5436502 f, KOI-834 f, KOI-834.05, WISE J191135.30+403816.1 f"
Status : Confirmed
Radius (Rjup / Re): 0.1780 (Rjup) 1.9952 (Rearth)
Mass (Mjup / Me): 0.0420 (Mjup) 13.3534 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.3010 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1381
Orbital Period(Observed/Estimated) 50.45 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 3.3544
Star Radiation at Atmospheric Boundary: 40838.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 634.5 (K)
Blackbody T 0.3(K) 595.8 (K)
Blackbody T 0.7(K) 482.1 (K)
Tidally Locked Blackbody T 0.1(K) 754.5 (K)
Tidally Locked Blackbody T 0.3(K) 708.6 (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-238
Alternate Name : "2MASS J19113530+4038161, KIC 5436502, KOI-834, WISE J191135.30+403816.1"
Star Distance(LY) : 5880.7
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5800 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.6
Metalicity : 0.1
Absolute Magnitude: 2.6
Apparent Magnitude: 13.9
Right Ascension(RA) 287.8971
Declination (DEC) 40.6378
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-238+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-238%20f/
Kepler-238 f
Kepler-238 f

  • Kepler-238 f is an exoplanet orbiting the star Kepler-238, located about 5880.7 light-years (1803.0 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star Kepler-238 has apparent magnitude of 13.9, with absolute magnitude of 2.6.
  • It is 1.4 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5800 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-238 f orbits around the star Kepler-238 every 50.4 days with its orbital distance of 0.30 AU ( 45033341.3 km)
  • (Projected orbit of Kepler-238 f around its host star Kepler-238)


  • The Star Kepler-238 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.190 AU ( 178032907.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.645 AU ( 246088003.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.507 AU ( 374983658.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.689 AU ( 551804880.3 km)
  • Radiation at Planetary Boundary of Kepler-238 f : 40838.67 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-238)



  • Kopparapu Recent Venus for Star Kepler-238 distance : 1.232 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-238 distance : 1.560 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-238 distance : 1.507 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-238 distance : 1.652 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-238 distance : 2.753 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-238 distance : 2.904 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-238)



  • Original Kopparapu Recent Venus for Star Kepler-238 distance : 1.234 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-238 distance : 1.603 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-238 distance : 1.633 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-238 distance : 2.801 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-238 distance : 2.913 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-238)



    (Position in Stellar Map of star Kepler-238 and its Exoplanet Kepler-238 f)



    (Zoomed position in Stellar Map of star Kepler-238 and its Exoplanet Kepler-238 f (zoom level 3))

    (Synthetic Spectrum of star Kepler-238*)
    *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