Imaginary Picture of Kepler-194 b

Display orbital revolution of Kepler-194 b around the hoststar Kepler-194
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Exoplanet Name : Kepler-194 b
Alternate Name : "2MASS J19275314+4751510 b, K00597.02, KIC 10600261 b, KOI-597 b, KOI-597.02, WISE J192753.14+475150.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.1350 (Rjup) 1.5132 (Rearth)
Mass (Mjup / Me): 0.0138 (Mjup) 4.3954 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0320 (AU) 0.0320 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0057
Orbital Period(Observed/Estimated) 2.09 (Days Obs.) 2.85 (Days Est.)
Surface Gravity (G Earth) 1.9195
Star Radiation at Atmospheric Boundary: 1293511.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1505.2 (K)
Blackbody T 0.3(K) 1413.5 (K)
Blackbody T 0.7(K) 1143.7 (K)
Tidally Locked Blackbody T 0.1(K) 1790.0 (K)
Tidally Locked Blackbody T 0.3(K) 1681.0 (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-194
Alternate Name : "2MASS J19275314+4751510, KIC 10600261, KOI-597, WISE J192753.14+475150.6"
Star Distance(LY) : 3582.5
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5710 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.3
Absolute Magnitude: 3.6
Apparent Magnitude: 13.8
Right Ascension(RA) 291.9714
Declination (DEC) 47.8642
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-194+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-194%20b/
Kepler-194 b
Kepler-194 b

  • Kepler-194 b is an exoplanet orbiting the star Kepler-194, located about 3582.5 light-years (1098.4 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-194 has apparent magnitude of 13.8, with absolute magnitude of 3.6.
  • It is 0.5 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5710 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-194 b orbits around the star Kepler-194 every 2.1 days with its orbital distance of 0.03 AU ( 4787131.9 km)
  • (Projected orbit of Kepler-194 b around its host star Kepler-194)


  • The Star Kepler-194 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.712 AU ( 106510116.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.984 AU ( 147224815.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.500 AU ( 224338038.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.207 AU ( 330123251.5 km)
  • Radiation at Planetary Boundary of Kepler-194 b : 1293511.67 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-194)



  • Kopparapu Recent Venus for Star Kepler-194 distance : 0.741 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-194 distance : 0.938 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-194 distance : 0.906 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-194 distance : 0.994 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-194 distance : 1.660 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-194 distance : 1.751 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-194)



  • Original Kopparapu Recent Venus for Star Kepler-194 distance : 0.741 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-194 distance : 0.964 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-194 distance : 0.980 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-194 distance : 1.689 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-194 distance : 1.757 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-194)



    (Position in Stellar Map of star Kepler-194 and its Exoplanet Kepler-194 b)



    (Zoomed position in Stellar Map of star Kepler-194 and its Exoplanet Kepler-194 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-194*)
    *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