Imaginary Picture of Kepler-647 c

Display orbital revolution of Kepler-647 c around the hoststar Kepler-647
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Exoplanet Name : Kepler-647 c
Alternate Name : "2MASS J18590919+4435300 c, K00691.01, KIC 8480285 c, KOI-691 c, KOI-691.01, WISE J185909.19+443529.8 c"
Radius (Rjup / Re): 0.3570 (Rjup) 4.0016 (Rearth)
Mass (Mjup / Me): 0.0301 (Mjup) 9.5806 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1894 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0812
Orbital Period(Observed/Estimated) 29.67 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.5983
Star Radiation at Atmospheric Boundary: 51400.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 672.0 (K)
Blackbody T 0.3(K) 631.1 (K)
Blackbody T 0.7(K) 510.6 (K)
Tidally Locked Blackbody T 0.1(K) 799.2 (K)
Tidally Locked Blackbody T 0.3(K) 750.5 (K)
Size Class: 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-647
Alternate Name : "2MASS J18590919+4435300, KIC 8480285, KOI-691, WISE J185909.19+443529.8"
Star Distance(LY) : 2573.4
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 4.3 (GY)
Temperature : 6020 (K)
Spectral type : G0
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 3.4
Apparent Magnitude: 12.9
Right Ascension(RA) 284.7883
Declination (DEC) 44.5917
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-647 c
Kepler-647 c

  • Kepler-647 c is an exoplanet orbiting the star Kepler-647, located about 2573.4 light-years (789.0 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-647 has apparent magnitude of 12.9, with absolute magnitude of 3.4.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6020 with its spectral types of G0
  • In this planetary system, the extrasolar planet Kepler-647 c orbits around the star Kepler-647 every 29.7 days with its orbital distance of 0.19 AU ( 28334785.3 km)
  • (Projected orbit of Kepler-647 c around its host star Kepler-647)


  • The Star Kepler-647 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.840 AU ( 125670942.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.161 AU ( 173710084.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.769 AU ( 264695726.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.604 AU ( 389511357.5 km)
  • Radiation at Planetary Boundary of Kepler-647 c : 51400.73 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-647)



  • Kopparapu Recent Venus for Star Kepler-647 distance : 0.858 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-647 distance : 1.087 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-647 distance : 1.049 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-647 distance : 1.150 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-647 distance : 1.907 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-647 distance : 2.012 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-647)



  • Original Kopparapu Recent Venus for Star Kepler-647 distance : 0.863 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-647 distance : 1.116 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-647 distance : 1.142 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-647 distance : 1.941 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-647 distance : 2.019 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-647)



    (Position in Stellar Map of star Kepler-647 and its Exoplanet Kepler-647 c)



    (Zoomed position in Stellar Map of star Kepler-647 and its Exoplanet Kepler-647 c (zoom level 3))

    (Synthetic Spectrum of star Kepler-647*)
    *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