Imaginary Picture of Kepler-188 b

Display orbital revolution of Kepler-188 b around the hoststar Kepler-188
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Exoplanet Name : Kepler-188 b
Alternate Name : "2MASS J18450713+4418559 b, K00573.02, KIC 8344004 b, KOI-573 b, KOI-573.02, WISE J184507.13+441855.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.1500 (Rjup) 1.6813 (Rearth)
Mass (Mjup / Me): 0.0135 (Mjup) 4.2774 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0320 (AU) 0.0320 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0056
Orbital Period(Observed/Estimated) 2.06 (Days Obs.) 2.05 (Days Est.)
Surface Gravity (G Earth) 1.5131
Star Radiation at Atmospheric Boundary: 1396956.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1534.4 (K)
Blackbody T 0.3(K) 1441.0 (K)
Blackbody T 0.7(K) 1165.9 (K)
Tidally Locked Blackbody T 0.1(K) 1824.7 (K)
Tidally Locked Blackbody T 0.3(K) 1713.6 (K)
Size Class: super-Earth-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-188
Alternate Name : "2MASS J18450713+4418559, KIC 8344004, KOI-573, WISE J184507.13+441855.8"
Star Distance(LY) : 3159.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5706 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.1
Absolute Magnitude: 3.6
Apparent Magnitude: 13.5
Right Ascension(RA) 281.2797
Declination (DEC) 44.3155
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-188+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-188%20b/
Kepler-188 b
Kepler-188 b

  • Kepler-188 b is an exoplanet orbiting the star Kepler-188, located about 3159.6 light-years (968.7 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-188 has apparent magnitude of 13.5, with absolute magnitude of 3.6.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5706 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-188 b orbits around the star Kepler-188 every 2.1 days with its orbital distance of 0.03 AU ( 4787131.9 km)
  • (Projected orbit of Kepler-188 b around its host star Kepler-188)


  • The Star Kepler-188 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.740 AU ( 110687132.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.023 AU ( 152998542.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.558 AU ( 233135920.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.293 AU ( 343069720.1 km)
  • Radiation at Planetary Boundary of Kepler-188 b : 1396956.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-188)



  • Kopparapu Recent Venus for Star Kepler-188 distance : 0.770 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-188 distance : 0.975 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-188 distance : 0.942 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-188 distance : 1.033 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-188 distance : 1.726 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-188 distance : 1.820 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-188)



  • Original Kopparapu Recent Venus for Star Kepler-188 distance : 0.770 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-188 distance : 1.002 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-188 distance : 1.019 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-188 distance : 1.756 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-188 distance : 1.826 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-188)



    (Position in Stellar Map of star Kepler-188 and its Exoplanet Kepler-188 b)



    (Zoomed position in Stellar Map of star Kepler-188 and its Exoplanet Kepler-188 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-188*)
    *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