Imaginary Picture of Kepler-1520 b

Display orbital revolution of Kepler-1520 b around the hoststar Kepler-1520
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Exoplanet Name : Kepler-1520 b
Alternate Name : "2MASS J19235189+5130170 b, K03794.01, KIC 12557548 b, KOI-3794 b, KOI-3794.01, WISE J192351.88+513017.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.0292 (Rjup) 0.3275 (Rearth)
Mass (Mjup / Me): 0.0001 (Mjup) 0.0200 (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.) 0.62 (Days Est.)
Surface Gravity (G Earth) 0.1868
Star Radiation at Atmospheric Boundary: 1523911.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1568.1 (K)
Blackbody T 0.3(K) 1472.6 (K)
Blackbody T 0.7(K) 1191.5 (K)
Tidally Locked Blackbody T 0.1(K) 1864.8 (K)
Tidally Locked Blackbody T 0.3(K) 1751.3 (K)
Size Class: Mercury-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-1520
Alternate Name : "Kepler-1520, 2MASS J19235189+5130170, KIC 12557548, KOI-3794, WISE J192351.88+513017.0"
Star Distance(LY) : 1982.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 4550 (K)
Spectral type : K4V
UV portion[%]: 1.7
Visible portion[%]: 31.9
IR portion[%]: 66.3
Metalicity : 0.0
Absolute Magnitude: 7.1
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
Kepler-1520 b
Kepler-1520 b

  • Kepler-1520 b is an exoplanet orbiting the star Kepler-1520, located about 1982.9 light-years (608.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1520 has apparent magnitude of 16.0, with absolute magnitude of 7.1.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4550 with its spectral types of K4V
  • In this planetary system, the extrasolar planet Kepler-1520 b orbits around the star Kepler-1520 every 0.7 days with its orbital distance of 0.01 AU ( 1944772.3 km)
  • (Projected orbit of Kepler-1520 b around its host star Kepler-1520)


  • The Star Kepler-1520 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.314 AU ( 46965499.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.434 AU ( 64918593.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.661 AU ( 98921570.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.973 AU ( 145567424.7 km)
  • Radiation at Planetary Boundary of Kepler-1520 b : 1523911.59 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1520)



  • Kopparapu Recent Venus for Star Kepler-1520 distance : 0.346 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1520 distance : 0.438 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1520 distance : 0.423 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1520 distance : 0.465 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1520 distance : 0.810 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1520 distance : 0.854 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1520)



  • Original Kopparapu Recent Venus for Star Kepler-1520 distance : 0.342 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1520 distance : 0.452 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1520 distance : 0.452 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1520 distance : 0.823 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1520 distance : 0.856 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1520)



    (Position in Stellar Map of star Kepler-1520 and its Exoplanet Kepler-1520 b)



    (Zoomed position in Stellar Map of star Kepler-1520 and its Exoplanet Kepler-1520 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1520*)
    *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