Imaginary Picture of Kepler-1220 b

Display orbital revolution of Kepler-1220 b around the hoststar Kepler-1220
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Exoplanet Name : Kepler-1220 b
Alternate Name : "2MASS J19481688+4258398 b, K02392.01, KIC 7382313 b, KOI-2392 b, KOI-2392.01"
Status : Confirmed
Radius (Rjup / Re): 0.1360 (Rjup) 1.5244 (Rearth)
Mass (Mjup / Me): 0.0142 (Mjup) 4.5162 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0745 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0203
Orbital Period(Observed/Estimated) 7.43 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.9434
Star Radiation at Atmospheric Boundary: 235774.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 983.5 (K)
Blackbody T 0.3(K) 923.6 (K)
Blackbody T 0.7(K) 747.3 (K)
Tidally Locked Blackbody T 0.1(K) 1169.6 (K)
Tidally Locked Blackbody T 0.3(K) 1098.3 (K)
Size Class: super-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-1220
Alternate Name : "2MASS J19481688+4258398, KIC 7382313, KOI-2392"
Star Distance(LY) : 3140.5
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.6 (GY)
Temperature : 5575 (K)
Spectral type : G2
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 3.8
Apparent Magnitude: 13.7
Right Ascension(RA) 297.0704
Declination (DEC) 42.9777
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. Batalha7"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 441 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1220+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1220%20b/
Kepler-1220 b
Kepler-1220 b

  • Kepler-1220 b is an exoplanet orbiting the star Kepler-1220, located about 3140.5 light-years (962.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1220 has apparent magnitude of 13.7, with absolute magnitude of 3.8.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5575 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-1220 b orbits around the star Kepler-1220 every 7.4 days with its orbital distance of 0.07 AU ( 11144787.0 km)
  • (Projected orbit of Kepler-1220 b around its host star Kepler-1220)


  • The Star Kepler-1220 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.708 AU ( 105864553.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.978 AU ( 146332479.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.491 AU ( 222978315.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.193 AU ( 328122358.7 km)
  • Radiation at Planetary Boundary of Kepler-1220 b : 235774.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1220)



  • Kopparapu Recent Venus for Star Kepler-1220 distance : 0.742 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1220 distance : 0.940 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1220 distance : 0.908 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1220 distance : 0.996 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1220 distance : 1.670 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1220 distance : 1.761 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1220)



  • Original Kopparapu Recent Venus for Star Kepler-1220 distance : 0.740 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1220 distance : 0.967 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1220 distance : 0.980 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1220 distance : 1.699 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1220 distance : 1.766 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1220)



    (Position in Stellar Map of star Kepler-1220 and its Exoplanet Kepler-1220 b)



    (Zoomed position in Stellar Map of star Kepler-1220 and its Exoplanet Kepler-1220 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1220*)
    *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