Imaginary Picture of Kepler-1222 b

Display orbital revolution of Kepler-1222 b around the hoststar Kepler-1222
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Exoplanet Name : Kepler-1222 b
Alternate Name : "2MASS J19393351+4922471 b, K02399.01, KIC 11461433 b, KOI-2399 b, KOI-2399.01, WISE J193933.50+492247.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.0700 (Rjup) 0.7846 (Rearth)
Mass (Mjup / Me): 0.0013 (Mjup) 0.4139 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0285 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0052
Orbital Period(Observed/Estimated) 1.92 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.6724
Star Radiation at Atmospheric Boundary: 556574.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1219.1 (K)
Blackbody T 0.3(K) 1144.8 (K)
Blackbody T 0.7(K) 926.3 (K)
Tidally Locked Blackbody T 0.1(K) 1449.7 (K)
Tidally Locked Blackbody T 0.3(K) 1361.4 (K)
Size Class: 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-1222
Alternate Name : "2MASS J19393351+4922471, KIC 11461433, KOI-2399, WISE J193933.50+492247.3"
Star Distance(LY) : 1353.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 4.4 (GY)
Temperature : 5066 (K)
Spectral type : K0
UV portion[%]: 3.7
Visible portion[%]: 37.9
IR portion[%]: 58.4
Metalicity : -0.0
Absolute Magnitude: 4.6
Apparent Magnitude: 12.7
Right Ascension(RA) 294.8897
Declination (DEC) 49.3798
Hubble Space Telescope Guide Star Catalog (GSC) ID
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. Batalha9"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 443 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1222+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1222%20b/
Kepler-1222 b
Kepler-1222 b

  • Kepler-1222 b is an exoplanet orbiting the star Kepler-1222, located about 1353.8 light-years (415.1 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1222 has apparent magnitude of 12.7, with absolute magnitude of 4.6.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 5066 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-1222 b orbits around the star Kepler-1222 every 1.9 days with its orbital distance of 0.03 AU ( 4262830.0 km)
  • (Projected orbit of Kepler-1222 b around its host star Kepler-1222)


  • The Star Kepler-1222 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.416 AU ( 62214280.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.575 AU ( 85996393.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.876 AU ( 131039473.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.289 AU ( 192830325.4 km)
  • Radiation at Planetary Boundary of Kepler-1222 b : 556574.81 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1222)



  • Kopparapu Recent Venus for Star Kepler-1222 distance : 0.448 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1222 distance : 0.568 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1222 distance : 0.548 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1222 distance : 0.602 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1222 distance : 1.026 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1222 distance : 1.083 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1222)



  • Original Kopparapu Recent Venus for Star Kepler-1222 distance : 0.444 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1222 distance : 0.585 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1222 distance : 0.588 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1222 distance : 1.044 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1222 distance : 1.085 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1222)



    (Position in Stellar Map of star Kepler-1222 and its Exoplanet Kepler-1222 b)



    (Zoomed position in Stellar Map of star Kepler-1222 and its Exoplanet Kepler-1222 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1222*)
    *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