Imaginary Picture of Kepler-666 b

Display orbital revolution of Kepler-666 b around the hoststar Kepler-666
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Exoplanet Name : Kepler-666 b
Alternate Name : "2MASS J19534964+4847297 b, K00762.01, KIC 11153539 b, KOI-762 b, KOI-762.01, WISE J195349.64+484729.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2140 (Rjup) 2.3987 (Rearth)
Mass (Mjup / Me): 0.0187 (Mjup) 5.9524 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0539 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0123
Orbital Period(Observed/Estimated) 4.50 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.0345
Star Radiation at Atmospheric Boundary: 796762.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1333.4 (K)
Blackbody T 0.3(K) 1252.2 (K)
Blackbody T 0.7(K) 1013.2 (K)
Tidally Locked Blackbody T 0.1(K) 1585.7 (K)
Tidally Locked Blackbody T 0.3(K) 1489.2 (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-666
Alternate Name : "2MASS J19534964+4847297, KIC 11153539, KOI-762, WISE J195349.64+484729.7"
Star Distance(LY) : 4926.1
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.8 (GY)
Temperature : 6076 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 3.3
Apparent Magnitude: 14.2
Right Ascension(RA) 298.4568
Declination (DEC) 48.7916
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 572 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-666%20b/
Kepler-666 b
Kepler-666 b

  • Kepler-666 b is an exoplanet orbiting the star Kepler-666, located about 4926.1 light-years (1510.4 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-666 has apparent magnitude of 14.2, with absolute magnitude of 3.3.
  • It is 1.0 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6076 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-666 b orbits around the star Kepler-666 every 4.5 days with its orbital distance of 0.05 AU ( 8057610.7 km)
  • (Projected orbit of Kepler-666 b around its host star Kepler-666)


  • The Star Kepler-666 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.941 AU ( 140702224.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.300 AU ( 194487244.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.981 AU ( 296355520.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.915 AU ( 436100131.3 km)
  • Radiation at Planetary Boundary of Kepler-666 b : 796762.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-666)



  • Kopparapu Recent Venus for Star Kepler-666 distance : 0.957 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-666 distance : 1.212 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-666 distance : 1.171 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-666 distance : 1.283 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-666 distance : 2.126 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-666 distance : 2.242 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-666)



  • Original Kopparapu Recent Venus for Star Kepler-666 distance : 0.965 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-666 distance : 1.245 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-666 distance : 1.276 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-666 distance : 2.163 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-666 distance : 2.250 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-666)



    (Position in Stellar Map of star Kepler-666 and its Exoplanet Kepler-666 b)



    (Zoomed position in Stellar Map of star Kepler-666 and its Exoplanet Kepler-666 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-666*)
    *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