Imaginary Picture of Kepler-1208 b
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Exoplanet Name : Kepler-1208 b
Alternate Name :
Radius (Rjup / Re): 0.2070 (Rjup) 2.3203 (Rearth)
Mass (Mjup / Me): 0.0182 (Mjup) 5.7712 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0903 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0303
Orbital Period(Observed/Estimated) 11.09 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 54308.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 681.3 (K)
Blackbody T 0.3(K) 639.8 (K)
Blackbody T 0.7(K) 517.7 (K)
Tidally Locked Blackbody T 0.1(K) 810.2 (K)
Tidally Locked Blackbody T 0.3(K) 760.9 (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-1208
Alternate Name :
Star Distance(LY) : 2860.4
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5001 (K)
Spectral type : K2
Metalicity : -0.0
Absolute Magnitude: 4.7
Apparent Magnitude: 14.4
Right Ascension(RA) 291.8813
Declination (DEC) 44.5557
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Timothy D. Morton1, Stephen T. Bryson2, Jeffrey L. Coughlin2,3, Jason F. Rowe4, Ganesh Ravichandran5, Erik A. Petigura6,7, Michael R. Haas2, and Natalie M. Batalha6"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 432 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1208%20b/
Kepler-1208 b
Kepler-1208 b

  • Kepler-1208 b is an exoplanet orbiting the star Kepler-1208, located about 2860.4 light-years (877.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1208 has apparent magnitude of 14.4, with absolute magnitude of 4.7.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5001 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-1208 b orbits around the star Kepler-1208 every 11.1 days with its orbital distance of 0.09 AU ( 13512044.0 km)
  • (Projected orbit of Kepler-1208 b around its host star Kepler-1208)


  • The Star Kepler-1208 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.412 AU ( 61600666.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.569 AU ( 85148219.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.867 AU ( 129747043.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.276 AU ( 190928458.7 km)
  • Radiation at Planetary Boundary of Kepler-1208 b : 54308.54 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1208)



  • Kopparapu Recent Venus for Star Kepler-1208 distance : 0.445 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1208 distance : 0.564 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1208 distance : 0.545 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1208 distance : 0.598 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1208 distance : 1.022 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1208 distance : 1.078 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1208)



  • Original Kopparapu Recent Venus for Star Kepler-1208 distance : 0.441 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1208 distance : 0.581 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1208 distance : 0.583 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1208 distance : 1.039 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1208 distance : 1.081 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1208)



    (Position in Stellar Map of star Kepler-1208 and its Exoplanet Kepler-1208 b)



    (Zoomed position in Stellar Map of star Kepler-1208 and its Exoplanet Kepler-1208 b (zoom level 3))