Imaginary Picture of Kepler-203 b

Display orbital revolution of Kepler-203 b around the hoststar Kepler-203
/
Exoplanet Name : Kepler-203 b
Alternate Name : "2MASS J19482159+4123169 b, K00658.01, KIC 6062088 b, KOI-65
Radius (Rjup / Re): 0.2290 (Rjup) 2.5669 (Rearth)
Mass (Mjup / Me): 0.0199 (Mjup) 6.3395 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0430 (AU) 0.0430 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0087
Orbital Period(Observed/Estimated) 3.16 (Days Obs.) 3.29 (Days Est.)
Surface Gravity (G Earth) 0.9622
Star Radiation at Atmospheric Boundary: 863267.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1360.4 (K)
Blackbody T 0.3(K) 1277.6 (K)
Blackbody T 0.7(K) 1033.7 (K)
Tidally Locked Blackbody T 0.1(K) 1617.8 (K)
Tidally Locked Blackbody T 0.3(K) 1519.3 (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-203
Alternate Name : "2MASS J19482159+4123169, KIC 6062088, KOI-658, WISE J194821.58+.E]@IICD@MNl @
Star Distance(LY) : 2292.9
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5887 (K)
Spectral type : G2
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 3.6
Apparent Magnitude: 12.9
Right Ascension(RA) 297.0900
Declination (DEC) 41.3880
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-203+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-203%20b/
Kepler-203 b
Kepler-203 b

  • Kepler-203 b is an exoplanet orbiting the star Kepler-203, located about 2292.9 light-years (703.0 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-203 has apparent magnitude of 12.9, 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 5887 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-203 b orbits around the star Kepler-203 every 3.2 days with its orbital distance of 0.04 AU ( 6432708.4 km)
  • (Projected orbit of Kepler-203 b around its host star Kepler-203)


  • The Star Kepler-203 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.782 AU ( 116922182.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.080 AU ( 161617011.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.646 AU ( 246268560.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.422 AU ( 362394974.5 km)
  • Radiation at Planetary Boundary of Kepler-203 b : 863267.72 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-203)



  • Kopparapu Recent Venus for Star Kepler-203 distance : 0.805 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-203 distance : 1.019 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-203 distance : 0.984 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-203 distance : 1.079 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-203 distance : 1.795 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-203 distance : 1.893 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-203)



  • Original Kopparapu Recent Venus for Star Kepler-203 distance : 0.808 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-203 distance : 1.047 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-203 distance : 1.069 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-203 distance : 1.826 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-203 distance : 1.899 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-203)



    (Position in Stellar Map of star Kepler-203 and its Exoplanet Kepler-203 b)



    (Zoomed position in Stellar Map of star Kepler-203 and its Exoplanet Kepler-203 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-203*)
    *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