Imaginary Picture of Kepler-939 b

Display orbital revolution of Kepler-939 b around the hoststar Kepler-939
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Exoplanet Name : Kepler-939 b
Alternate Name : "2MASS J19352774+4701365 b, K01722.01, KIC 10080248 b, KOI-1722 b, KOI-1722.01"
Status : Confirmed
Radius (Rjup / Re): 0.1560 (Rjup) 1.7486 (Rearth)
Mass (Mjup / Me): 0.0140 (Mjup) 4.4363 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1134 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0407
Orbital Period(Observed/Estimated) 14.88 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4509
Star Radiation at Atmospheric Boundary: 325428.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1066.0 (K)
Blackbody T 0.3(K) 1001.1 (K)
Blackbody T 0.7(K) 810.0 (K)
Tidally Locked Blackbody T 0.1(K) 1267.7 (K)
Tidally Locked Blackbody T 0.3(K) 1190.5 (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-939
Alternate Name : "2MASS J19352774+4701365, KIC 10080248, KOI-1722"
Star Distance(LY) : 6891.2
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 5824 (K)
Spectral type : G7
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.1
Absolute Magnitude: 2.7
Apparent Magnitude: 14.3
Right Ascension(RA) 293.8656
Declination (DEC) 47.0268
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 755 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-939&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-939%20b/
Kepler-939 b
Kepler-939 b

  • Kepler-939 b is an exoplanet orbiting the star Kepler-939, located about 6891.2 light-years (2112.8 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-939 has apparent magnitude of 14.3, with absolute magnitude of 2.7.
  • It is 0.9 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 5824 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-939 b orbits around the star Kepler-939 every 14.9 days with its orbital distance of 0.11 AU ( 16971814.8 km)
  • (Projected orbit of Kepler-939 b around its host star Kepler-939)


  • The Star Kepler-939 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.266 AU ( 189402681.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.750 AU ( 261804002.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.667 AU ( 398931362.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.924 AU ( 587044975.6 km)
  • Radiation at Planetary Boundary of Kepler-939 b : 325428.13 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-939)



  • Kopparapu Recent Venus for Star Kepler-939 distance : 1.309 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-939 distance : 1.657 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-939 distance : 1.600 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-939 distance : 1.755 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-939 distance : 2.923 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-939 distance : 3.083 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-939)



  • Original Kopparapu Recent Venus for Star Kepler-939 distance : 1.311 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-939 distance : 1.703 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-939 distance : 1.735 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-939 distance : 2.974 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-939 distance : 3.093 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-939)



    (Position in Stellar Map of star Kepler-939 and its Exoplanet Kepler-939 b)



    (Zoomed position in Stellar Map of star Kepler-939 and its Exoplanet Kepler-939 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-939*)
    *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