Imaginary Picture of Kepler-539 b

Display orbital revolution of Kepler-539 b around the hoststar Kepler-539
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Exoplanet Name : Kepler-539 b
Alternate Name : "KOI-372 b, 2MASS J19562938+4152003 b, K00372.01, KIC 6471021 b, KOI-372.01, WISE J195629.39+415200.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.7470 (Rjup) 8.3731 (Rearth)
Mass (Mjup / Me): 0.9700 (Mjup) 308.3999 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.4988 (AU) 0.4988 (AU Est.)
Eccentricity : 0.3900
Orbital Period(Yrs) 0.3440
Orbital Period(Observed/Estimated) 125.63 (Days Obs.) 125.57 (Days Est.)
Surface Gravity (G Earth) 4.3989
Star Radiation at Atmospheric Boundary: 4783.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 371.2 (K)
Blackbody T 0.3(K) 348.6 (K)
Blackbody T 0.7(K) 282.0 (K)
Tidally Locked Blackbody T 0.1(K) 441.4 (K)
Tidally Locked Blackbody T 0.3(K) 414.5 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-539
Alternate Name : "2MASS J19562938+4152003, KIC 6471021, KOI-372, WISE J195629.39+415200.4"
Star Distance(LY) : 1002.2
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 1.1 (GY)
Temperature : 5816 (K)
Spectral type : G2 V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 5.1
Apparent Magnitude: 12.5
Right Ascension(RA) 299.1225
Declination (DEC) 41.8668
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 471 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-539+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-539%20b/
Kepler-539 b
Kepler-539 b

  • Kepler-539 b is an exoplanet orbiting the star Kepler-539, located about 1002.2 light-years (307.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-539 has apparent magnitude of 12.5, with absolute magnitude of 5.1.
  • It is 1.1 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5816 with its spectral types of G2 V
  • In this planetary system, the extrasolar planet Kepler-539 b orbits around the star Kepler-539 every 125.6 days with its orbital distance of 0.50 AU ( 74619417.9 km)
  • (Projected orbit of Kepler-539 b around its host star Kepler-539)


  • The Star Kepler-539 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.675 AU ( 100963997.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.933 AU ( 139558629.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.422 AU ( 212656467.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.092 AU ( 312933308.1 km)
  • Radiation at Planetary Boundary of Kepler-539 b : 4783.75 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-539)



  • Kopparapu Recent Venus for Star Kepler-539 distance : 0.698 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-539 distance : 0.884 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-539 distance : 0.854 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-539 distance : 0.936 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-539 distance : 1.559 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-539 distance : 1.644 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-539)



  • Original Kopparapu Recent Venus for Star Kepler-539 distance : 0.699 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-539 distance : 0.908 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-539 distance : 0.925 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-539 distance : 1.587 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-539 distance : 1.650 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-539)



    (Position in Stellar Map of star Kepler-539 and its Exoplanet Kepler-539 b)



    (Zoomed position in Stellar Map of star Kepler-539 and its Exoplanet Kepler-539 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-539*)
    *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