Imaginary Picture of Kepler-1266 b

Display orbital revolution of Kepler-1266 b around the hoststar Kepler-1266
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Exoplanet Name : Kepler-1266 b
Alternate Name : "2MASS J19032862+4243411 b, K02521.01, KIC 7183745 b, KOI-2521 b, KOI-2521.01"
Status : Confirmed
Radius (Rjup / Re): 0.2300 (Rjup) 2.5781 (Rearth)
Mass (Mjup / Me): 0.0200 (Mjup) 6.3653 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1715 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0780
Orbital Period(Observed/Estimated) 28.47 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.9577
Star Radiation at Atmospheric Boundary: 13658.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 482.5 (K)
Blackbody T 0.3(K) 453.1 (K)
Blackbody T 0.7(K) 366.6 (K)
Tidally Locked Blackbody T 0.1(K) 573.8 (K)
Tidally Locked Blackbody T 0.3(K) 538.9 (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-1266
Alternate Name : "7183745, KOI-2521"
Star Distance(LY) : 2773.3
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 5.1 (GY)
Temperature : 4976 (K)
Spectral type : K0V
UV portion[%]: 3.1
Visible portion[%]: 36.8
IR portion[%]: 60.0
Metalicity : -0.1
Absolute Magnitude: 5.9
Apparent Magnitude: 15.6
Right Ascension(RA) 285.8693
Declination (DEC) 42.7281
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton1, Stephen T. Bryson2, Jeffrey L. Coughlin2,3, Jason F. Rowe4, Ganesh Ravichandran5, Erik A. Petigura6,7, Michael R. Haas2, and Natalie M. Batalha13"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 447 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1266+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1266%20b/
Kepler-1266 b
Kepler-1266 b

  • Kepler-1266 b is an exoplanet orbiting the star Kepler-1266, located about 2773.3 light-years (850.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1266 has apparent magnitude of 15.6, with absolute magnitude of 5.9.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4976 with its spectral types of K0V
  • In this planetary system, the extrasolar planet Kepler-1266 b orbits around the star Kepler-1266 every 28.5 days with its orbital distance of 0.17 AU ( 25656528.1 km)
  • (Projected orbit of Kepler-1266 b around its host star Kepler-1266)


  • The Star Kepler-1266 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.392 AU ( 58659213.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.542 AU ( 81082362.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.826 AU ( 123551576.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.215 AU ( 181811556.8 km)
  • Radiation at Planetary Boundary of Kepler-1266 b : 13658.91 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1266)



  • Kopparapu Recent Venus for Star Kepler-1266 distance : 0.425 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1266 distance : 0.538 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1266 distance : 0.519 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1266 distance : 0.570 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1266 distance : 0.975 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1266 distance : 1.029 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1266)



  • Original Kopparapu Recent Venus for Star Kepler-1266 distance : 0.420 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1266 distance : 0.554 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1266 distance : 0.556 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1266 distance : 0.992 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1266 distance : 1.031 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1266)



    (Position in Stellar Map of star Kepler-1266 and its Exoplanet Kepler-1266 b)



    (Zoomed position in Stellar Map of star Kepler-1266 and its Exoplanet Kepler-1266 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1266*)
    *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