Imaginary Picture of Kepler-47 (AB) b

Display orbital revolution of Kepler-47 (AB) b around the hoststar Kepler-47 (AB)
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Exoplanet Name : Kepler-47 (AB) b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.2700 (Rjup) 3.0264 (Rearth)
Mass (Mjup / Me): 0.0232 (Mjup) 7.3889 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2956 (AU) 0.2956 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1356
Orbital Period(Observed/Estimated) 49.51 (Days Obs.) 57.48 (Days Est.)
Surface Gravity (G Earth) 0.8067
Star Radiation at Atmospheric Boundary: 13159.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 478.0 (K)
Blackbody T 0.3(K) 448.9 (K)
Blackbody T 0.7(K) 363.2 (K)
Tidally Locked Blackbody T 0.1(K) 568.5 (K)
Tidally Locked Blackbody T 0.3(K) 533.9 (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-47 (AB)
Alternate Name :
Star Distance(LY) : 3418.8
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5636 (K)
Spectral type : G5
UV portion[%]: 7.4
Visible portion[%]: 44.1
IR portion[%]: 48.5
Metalicity : 0.0
Absolute Magnitude: 11.9
Apparent Magnitude: 22.0
Right Ascension(RA) 295.2979
Declination (DEC) 46.9200
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Jerome A. Orosz1,*, William F. Welsh1, Joshua A. Carter2, Daniel C. Fabrycky3, William D. Cochran4, Michael Endl4, Eric B. Ford5, Nader Haghighipour6, Phillip J. MacQueen4, Tsevi Mazeh7, Roberto Sanchis-Ojeda8, Donald R. Short1, Guillermo Torres2, Eric Agol9, Lars A. Buchhave10,11, Laurance R. Doyle12, Howard Isaacson13, Jack J. Lissauer14, Geoffrey W. Marcy13, Avi Shporer15,16,17, Gur Windmiller1, Thomas Barclay14,18, Alan P. Boss19, Bruce D. Clarke12,14, Jonathan Fortney3, John C. Geary2, Matthew J. Holman2, Daniel Huber14, Jon M. Jenkins12,14, Karen Kinemuchi14,18, Ethan Kruse2, Darin Ragozzine2, Dimitar Sasselov2, Martin Still14,18, Peter Tenenbaum12,14, Kamal Uddin14,20, Joshua N. Winn8, David G. Koch14, William J. Borucki14"
Discovery Paper - Title Kepler-47: A Transiting Circumbinary Multiplanet System
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-47+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-47%20%28AB%29%20b/
Kepler-47 (AB) b
Kepler-47 (AB) b
  • Kepler-47 (AB) b is an exoplanet orbiting the star Kepler-47 (AB), located about 3418.8 light-years (1048.2 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star Kepler-47 (AB) has apparent magnitude of 22.0, with absolute magnitude of 11.9.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5636 with its spectral types of G5
  • In this planetary system, the extrasolar planet Kepler-47 (AB) b orbits around the star Kepler-47 (AB) every 49.5 days with its orbital distance of 0.30 AU ( 44221130.6 km)
    • (Projected orbit of Kepler-47 (AB) b around its host star Kepler-47 (AB))


  • The Star Kepler-47 (AB) 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.663 AU ( 99237797.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.917 AU ( 137172569.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.397 AU ( 209020639.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.056 AU ( 307583028.0 km)
  • Radiation at Planetary Boundary of Kepler-47 (AB) b : 13159.34 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-47 (AB))



  • Kopparapu Recent Venus for Star Kepler-47 (AB) distance : 0.693 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-47 (AB) distance : 0.878 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-47 (AB) distance : 0.848 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-47 (AB) distance : 0.930 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-47 (AB) distance : 1.557 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-47 (AB) distance : 1.642 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-47 (AB))



  • Original Kopparapu Recent Venus for Star Kepler-47 (AB) distance : 0.692 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-47 (AB) distance : 0.903 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-47 (AB) distance : 0.916 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-47 (AB) distance : 1.584 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-47 (AB) distance : 1.647 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-47 (AB))



    (Position in Stellar Map of star Kepler-47 (AB) and its Exoplanet Kepler-47 (AB) b)



    (Zoomed position in Stellar Map of star Kepler-47 (AB) and its Exoplanet Kepler-47 (AB) b (zoom level 3))

    (Synthetic Spectrum of star Kepler-47 (AB)*)
    *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