Imaginary Picture of Kepler-801 b

Display orbital revolution of Kepler-801 b around the hoststar Kepler-801
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Exoplanet Name : Kepler-801 b
Alternate Name : "2MASS J19041805+4439527 b, K01266.01, KIC 8547140 b, KOI-1266 b, KOI-1266.01, WISE J190418.04+443952.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.1780 (Rjup) 1.9952 (Rearth)
Mass (Mjup / Me): 0.0158 (Mjup) 5.0153 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0868 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0313
Orbital Period(Observed/Estimated) 11.42 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2599
Star Radiation at Atmospheric Boundary: 16520.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 506.0 (K)
Blackbody T 0.3(K) 475.2 (K)
Blackbody T 0.7(K) 384.5 (K)
Tidally Locked Blackbody T 0.1(K) 601.7 (K)
Tidally Locked Blackbody T 0.3(K) 565.1 (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-801
Alternate Name : "2MASS J19041805+4439527, KIC 8547140, KOI-1266, WISE J190418.04+443952.6"
Star Distance(LY) : 1436.1
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 3.5 (GY)
Temperature : 3822 (K)
Spectral type : K5
UV portion[%]: 1.4
Visible portion[%]: 30.0
IR portion[%]: 68.7
Metalicity : -0.2
Absolute Magnitude: 5.3
Apparent Magnitude: 13.5
Right Ascension(RA) 286.0752
Declination (DEC) 44.6646
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 673 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-801&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-801%20b/
Kepler-801 b
Kepler-801 b

  • Kepler-801 b is an exoplanet orbiting the star Kepler-801, located about 1436.1 light-years (440.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-801 has apparent magnitude of 13.5, with absolute magnitude of 5.3.
  • It is 0.7 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 3822 with its spectral types of K5
  • In this planetary system, the extrasolar planet Kepler-801 b orbits around the star Kepler-801 every 11.4 days with its orbital distance of 0.09 AU ( 12991204.2 km)
  • (Projected orbit of Kepler-801 b around its host star Kepler-801)


  • The Star Kepler-801 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.218 AU ( 32665444.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.302 AU ( 45152180.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.460 AU ( 68801930.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.677 AU ( 101245055.2 km)
  • Radiation at Planetary Boundary of Kepler-801 b : 16520.29 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-801)



  • Kopparapu Recent Venus for Star Kepler-801 distance : 0.246 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-801 distance : 0.311 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-801 distance : 0.300 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-801 distance : 0.330 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-801 distance : 0.595 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-801 distance : 0.628 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-801)



  • Original Kopparapu Recent Venus for Star Kepler-801 distance : 0.243 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-801 distance : 0.321 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-801 distance : 0.321 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-801 distance : 0.604 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-801 distance : 0.629 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-801)



    (Position in Stellar Map of star Kepler-801 and its Exoplanet Kepler-801 b)



    (Zoomed position in Stellar Map of star Kepler-801 and its Exoplanet Kepler-801 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-801*)
    *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