Imaginary Picture of KIC 12557548 b
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Exoplanet Name : KIC 12557548 b
Alternate Name : Kepler-1520 b
Radius (Rjup / Re): 0.0758 (Rjup) 0.8500 (Rearth)
Mass (Mjup / Me): 0.0017 (Mjup) 0.5489 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0130 (AU) 0.0130 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0018
Orbital Period(Observed/Estimated) 0.65 (Days Obs.) 0.65 (Days Est.)
Star Radiation at Atmospheric Boundary: 1161680.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1465.3 (K)
Blackbody T 0.3(K) 1376.0 (K)
Blackbody T 0.7(K) 1113.4 (K)
Tidally Locked Blackbody T 0.1(K) 1742.5 (K)
Tidally Locked Blackbody T 0.3(K) 1636.4 (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 : KIC 12557548
Alternate Name : Kepler-1520
Star Distance(LY) : 1532.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4412 (K)
Spectral type : K4V
Metalicity : -0.2
Absolute Magnitude: 7.6
Apparent Magnitude: 16.0
Right Ascension(RA) 290.9662
Declination (DEC) 51.5047
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KIC+12557548+&submit=SIMBAD+search
Open Exoplanet Database Link
KIC 12557548 b
KIC 12557548 b

  • KIC 12557548 b is an exoplanet orbiting the star KIC 12557548, located about 1532.9 light-years (470.0 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star KIC 12557548 has apparent magnitude of 16.0, with absolute magnitude of 7.6.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4412 with its spectral types of K4V
  • In this planetary system, the extrasolar planet KIC 12557548 b orbits around the star KIC 12557548 every 0.7 days with its orbital distance of 0.01 AU ( 1944772.3 km)
  • (Projected orbit of KIC 12557548 b around its host star KIC 12557548)


  • The Star KIC 12557548 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.274 AU ( 41005534.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.379 AU ( 56680364.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.577 AU ( 86368332.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.850 AU ( 127094784.6 km)
  • Radiation at Planetary Boundary of KIC 12557548 b : 1161680.86 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star KIC 12557548)



  • Kopparapu Recent Venus for Star KIC 12557548 distance : 0.304 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star KIC 12557548 distance : 0.384 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star KIC 12557548 distance : 0.371 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star KIC 12557548 distance : 0.408 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star KIC 12557548 distance : 0.715 AU
  • Kopparapu Outer Boundary for Early Mars for Star KIC 12557548 distance : 0.754 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star KIC 12557548)



  • Original Kopparapu Recent Venus for Star KIC 12557548 distance : 0.300 AU
  • Original Kopparapu Runaway Greenhouse for Star KIC 12557548 distance : 0.397 AU
  • Original Kopparapu Moist Greenhouse for Star KIC 12557548 distance : 0.396 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star KIC 12557548 distance : 0.727 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star KIC 12557548 distance : 0.756 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star KIC 12557548)



    (Position in Stellar Map of star KIC 12557548 and its Exoplanet KIC 12557548 b)



    (Zoomed position in Stellar Map of star KIC 12557548 and its Exoplanet KIC 12557548 b (zoom level 3))