Imaginary Picture of Kepler-1247 b

Display orbital revolution of Kepler-1247 b around the hoststar Kepler-1247
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Exoplanet Name : Kepler-1247 b
Alternate Name : "2MASS J19380805+4637057 b, K02461.01, KIC 9837685 b, KOI-2461 b, KOI-2461.01, WISE J193808.06+463705.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2080 (Rjup) 2.3315 (Rearth)
Mass (Mjup / Me): 0.0182 (Mjup) 5.7971 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1066 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0375
Orbital Period(Observed/Estimated) 13.71 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0665
Star Radiation at Atmospheric Boundary: 59330.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 696.6 (K)
Blackbody T 0.3(K) 654.1 (K)
Blackbody T 0.7(K) 529.3 (K)
Tidally Locked Blackbody T 0.1(K) 828.4 (K)
Tidally Locked Blackbody T 0.3(K) 777.9 (K)
Size Class: sub-Neptune-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-1247
Alternate Name : "2MASS J19380805+4637057, KIC 9837685, KOI-2461, WISE J193808.06+463705.7"
Star Distance(LY) : 3418.3
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.7 (GY)
Temperature : 5555 (K)
Spectral type : K0
UV portion[%]: 5.8
Visible portion[%]: 41.5
IR portion[%]: 52.7
Metalicity : -0.1
Absolute Magnitude: 4.4
Apparent Magnitude: 14.5
Right Ascension(RA) 294.5336
Declination (DEC) 46.6183
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. Batalha15"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 449 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1247+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1247%20b/
Kepler-1247 b
Kepler-1247 b

  • Kepler-1247 b is an exoplanet orbiting the star Kepler-1247, located about 3418.3 light-years (1048.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1247 has apparent magnitude of 14.5, with absolute magnitude of 4.4.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5555 with its spectral types of K0
  • In this planetary system, the extrasolar planet Kepler-1247 b orbits around the star Kepler-1247 every 13.7 days with its orbital distance of 0.11 AU ( 15950325.5 km)
  • (Projected orbit of Kepler-1247 b around its host star Kepler-1247)


  • The Star Kepler-1247 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.508 AU ( 76004591.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.702 AU ( 105058208.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.070 AU ( 160085460.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.575 AU ( 235572767.6 km)
  • Radiation at Planetary Boundary of Kepler-1247 b : 59330.77 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1247)



  • Kopparapu Recent Venus for Star Kepler-1247 distance : 0.534 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1247 distance : 0.676 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1247 distance : 0.653 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1247 distance : 0.716 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1247 distance : 1.201 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1247 distance : 1.267 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1247)



  • Original Kopparapu Recent Venus for Star Kepler-1247 distance : 0.532 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1247 distance : 0.695 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1247 distance : 0.704 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1247 distance : 1.222 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1247 distance : 1.270 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1247)



    (Position in Stellar Map of star Kepler-1247 and its Exoplanet Kepler-1247 b)



    (Zoomed position in Stellar Map of star Kepler-1247 and its Exoplanet Kepler-1247 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1247*)
    *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