Imaginary Picture of Kepler-233 b

Display orbital revolution of Kepler-233 b around the hoststar Kepler-233
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Exoplanet Name : Kepler-233 b
Alternate Name : "2MASS J19452796+5119102 b, K00790.01, KIC 12470844 b, KOI-790 b, KOI-790.01, WISE J194527.95+511910.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2170 (Rjup) 2.4324 (Rearth)
Mass (Mjup / Me): 0.0190 (Mjup) 6.0300 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0770 (AU) 0.0770 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0232
Orbital Period(Observed/Estimated) 8.47 (Days Obs.) 8.95 (Days Est.)
Surface Gravity (G Earth) 1.0192
Star Radiation at Atmospheric Boundary: 118744.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 828.5 (K)
Blackbody T 0.3(K) 778.1 (K)
Blackbody T 0.7(K) 629.5 (K)
Tidally Locked Blackbody T 0.1(K) 985.3 (K)
Tidally Locked Blackbody T 0.3(K) 925.3 (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-233
Alternate Name : "2MASS J19452796+5119102, KIC 12470844, KOI-790, WISE J194527.95+511910.0"
Star Distance(LY) : 2793.6
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5360 (K)
Spectral type : G7
UV portion[%]: 6.2
Visible portion[%]: 42.1
IR portion[%]: 51.8
Metalicity : -0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 14.0
Right Ascension(RA) 296.3665
Declination (DEC) 51.3195
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-233+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-233%20b/
Kepler-233 b
Kepler-233 b

  • Kepler-233 b is an exoplanet orbiting the star Kepler-233, located about 2793.6 light-years (856.5 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-233 has apparent magnitude of 14.0, with absolute magnitude of 4.3.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5360 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-233 b orbits around the star Kepler-233 every 8.5 days with its orbital distance of 0.08 AU ( 11519036.0 km)
  • (Projected orbit of Kepler-233 b around its host star Kepler-233)


  • The Star Kepler-233 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.519 AU ( 77652196.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.717 AU ( 107335627.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.093 AU ( 163555743.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.609 AU ( 240679441.7 km)
  • Radiation at Planetary Boundary of Kepler-233 b : 118744.81 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-233)



  • Kopparapu Recent Venus for Star Kepler-233 distance : 0.551 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-233 distance : 0.698 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-233 distance : 0.674 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-233 distance : 0.739 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-233 distance : 1.248 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-233 distance : 1.317 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-233)



  • Original Kopparapu Recent Venus for Star Kepler-233 distance : 0.548 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-233 distance : 0.718 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-233 distance : 0.725 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-233 distance : 1.270 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-233 distance : 1.320 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-233)



    (Position in Stellar Map of star Kepler-233 and its Exoplanet Kepler-233 b)



    (Zoomed position in Stellar Map of star Kepler-233 and its Exoplanet Kepler-233 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-233*)
    *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