Imaginary Picture of Kepler-1227 b
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Exoplanet Name : Kepler-1227 b
Alternate Name :
Radius (Rjup / Re): 0.2040 (Rjup) 2.2866 (Rearth)
Mass (Mjup / Me): 0.0179 (Mjup) 5.6933 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.4013 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2581
Orbital Period(Observed/Estimated) 94.29 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 7495.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 415.3 (K)
Blackbody T 0.3(K) 390.0 (K)
Blackbody T 0.7(K) 315.5 (K)
Tidally Locked Blackbody T 0.1(K) 493.9 (K)
Tidally Locked Blackbody T 0.3(K) 463.8 (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-1227
Alternate Name :
Star Distance(LY) : 2175.5
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5747 (K)
Spectral type : G3
Metalicity : -0.0
Absolute Magnitude: 3.8
Apparent Magnitude: 13.0
Right Ascension(RA) 287.0664
Declination (DEC) 41.8749
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. Batalha14"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 448 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK 0
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1227%20b/
Kepler-1227 b
Kepler-1227 b

  • Kepler-1227 b is an exoplanet orbiting the star Kepler-1227, located about 2175.5 light-years (667.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1227 has apparent magnitude of 13.0, with absolute magnitude of 3.8.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5747 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1227 b orbits around the star Kepler-1227 every 94.3 days with its orbital distance of 0.40 AU ( 60038400.9 km)
  • (Projected orbit of Kepler-1227 b around its host star Kepler-1227)


  • The Star Kepler-1227 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.680 AU ( 101686690.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.940 AU ( 140557579.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.432 AU ( 214178646.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.107 AU ( 315173260.7 km)
  • Radiation at Planetary Boundary of Kepler-1227 b : 7495.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1227)



  • Kopparapu Recent Venus for Star Kepler-1227 distance : 0.706 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1227 distance : 0.894 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1227 distance : 0.863 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1227 distance : 0.946 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1227 distance : 1.580 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1227 distance : 1.666 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1227)



  • Original Kopparapu Recent Venus for Star Kepler-1227 distance : 0.706 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1227 distance : 0.919 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1227 distance : 0.935 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1227 distance : 1.607 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1227 distance : 1.672 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1227)



    (Position in Stellar Map of star Kepler-1227 and its Exoplanet Kepler-1227 b)



    (Zoomed position in Stellar Map of star Kepler-1227 and its Exoplanet Kepler-1227 b (zoom level 3))