Imaginary Picture of Kepler-266 b

Display orbital revolution of Kepler-266 b around the hoststar Kepler-266
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Exoplanet Name : Kepler-266 b
Alternate Name : "2MASS J19375625+4410008 b, K01070.01, KIC 8240904 b, KOI-1070 b, KOI-1070.01, WISE J193756.25+441001.0 b"
Status : Confirmed
Radius (Rjup / Re): 0.2210 (Rjup) 2.4772 (Rearth)
Mass (Mjup / Me): 0.0193 (Mjup) 6.1333 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0710 (AU) 0.0710 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0181
Orbital Period(Observed/Estimated) 6.62 (Days Obs.) 6.94 (Days Est.)
Surface Gravity (G Earth) 0.9995
Star Radiation at Atmospheric Boundary: 286926.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1033.0 (K)
Blackbody T 0.3(K) 970.1 (K)
Blackbody T 0.7(K) 784.9 (K)
Tidally Locked Blackbody T 0.1(K) 1228.4 (K)
Tidally Locked Blackbody T 0.3(K) 1153.6 (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-266
Alternate Name : "2MASS J19375625+4410008, KIC 8240904, KOI-1070, WISE J193756.25+441001.0"
Star Distance(LY) : 4478.3
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5535 (K)
Spectral type : G1
UV portion[%]: 7.0
Visible portion[%]: 43.5
IR portion[%]: 49.5
Metalicity : 0.1
Absolute Magnitude: 3.6
Apparent Magnitude: 14.3
Right Ascension(RA) 294.4844
Declination (DEC) 44.1669
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-266+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-266%20b/
Kepler-266 b
Kepler-266 b

  • Kepler-266 b is an exoplanet orbiting the star Kepler-266, located about 4478.3 light-years (1373.0 pc) away from Solar System. Its discovery was publicly announced on 2014.
  • The host star Kepler-266 has apparent magnitude of 14.3, with absolute magnitude of 3.6.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5535 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-266 b orbits around the star Kepler-266 every 6.6 days with its orbital distance of 0.07 AU ( 10621448.8 km)
  • (Projected orbit of Kepler-266 b around its host star Kepler-266)


  • The Star Kepler-266 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.744 AU ( 111300976.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.028 AU ( 153847036.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.567 AU ( 234428837.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.306 AU ( 344972303.3 km)
  • Radiation at Planetary Boundary of Kepler-266 b : 286925.96 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-266)



  • Kopparapu Recent Venus for Star Kepler-266 distance : 0.782 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-266 distance : 0.991 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-266 distance : 0.957 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-266 distance : 1.049 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-266 distance : 1.762 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-266 distance : 1.858 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-266)



  • Original Kopparapu Recent Venus for Star Kepler-266 distance : 0.780 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-266 distance : 1.019 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-266 distance : 1.032 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-266 distance : 1.792 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-266 distance : 1.864 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-266)



    (Position in Stellar Map of star Kepler-266 and its Exoplanet Kepler-266 b)



    (Zoomed position in Stellar Map of star Kepler-266 and its Exoplanet Kepler-266 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-266*)
    *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