Imaginary Picture of Kepler-947 b

Display orbital revolution of Kepler-947 b around the hoststar Kepler-947
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Exoplanet Name : Kepler-947 b
Alternate Name : "2MASS J19372801+4215096 b, K01749.01, KIC 6786348 b, KOI-1749 b, KOI-1749.01, WISE J193728.02+421509.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.2030 (Rjup) 2.2754 (Rearth)
Mass (Mjup / Me): 0.0178 (Mjup) 5.6674 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1699 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0738
Orbital Period(Observed/Estimated) 26.96 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0946
Star Radiation at Atmospheric Boundary: 77383.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 744.4 (K)
Blackbody T 0.3(K) 699.1 (K)
Blackbody T 0.7(K) 565.6 (K)
Tidally Locked Blackbody T 0.1(K) 885.2 (K)
Tidally Locked Blackbody T 0.3(K) 831.3 (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-947
Alternate Name : "2MASS J19372801+4215096, KIC 6786348, KOI-1749, WISE J193728.02+421509.4"
Star Distance(LY) : 5663.4
Stellar Radius(Rsun) : 1.3 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 5761 (K)
Spectral type : G7
UV portion[%]: 7.8
Visible portion[%]: 44.7
IR portion[%]: 47.5
Metalicity : -0.1
Absolute Magnitude: 3.3
Apparent Magnitude: 14.5
Right Ascension(RA) 294.3667
Declination (DEC) 42.2527
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 761 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-947&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-947%20b/
Kepler-947 b
Kepler-947 b

  • Kepler-947 b is an exoplanet orbiting the star Kepler-947, located about 5663.4 light-years (1736.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-947 has apparent magnitude of 14.5, with absolute magnitude of 3.3.
  • It is 0.9 times more massive and 1.3 times bigger compared with our Sun. The surface temperature is 5761 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-947 b orbits around the star Kepler-947 every 27.0 days with its orbital distance of 0.17 AU ( 25417935.9 km)
  • (Projected orbit of Kepler-947 b around its host star Kepler-947)


  • The Star Kepler-947 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.925 AU ( 138323137.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.278 AU ( 191198724.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.948 AU ( 291344543.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.866 AU ( 428726259.0 km)
  • Radiation at Planetary Boundary of Kepler-947 b : 77383.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-947)



  • Kopparapu Recent Venus for Star Kepler-947 distance : 0.959 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-947 distance : 1.215 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-947 distance : 1.173 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-947 distance : 1.286 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-947 distance : 2.146 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-947 distance : 2.264 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-947)



  • Original Kopparapu Recent Venus for Star Kepler-947 distance : 0.960 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-947 distance : 1.248 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-947 distance : 1.271 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-947 distance : 2.184 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-947 distance : 2.271 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-947)



    (Position in Stellar Map of star Kepler-947 and its Exoplanet Kepler-947 b)



    (Zoomed position in Stellar Map of star Kepler-947 and its Exoplanet Kepler-947 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-947*)
    *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