Imaginary Picture of Kepler-804 b

Display orbital revolution of Kepler-804 b around the hoststar Kepler-804
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Exoplanet Name : Kepler-804 b
Alternate Name : "2MASS J19332934+4447064 b, K01279.01, KIC 8628758 b, KOI-1279 b, KOI-1279.01, WISE J193329.34+444706.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.1730 (Rjup) 1.9392 (Rearth)
Mass (Mjup / Me): 0.0154 (Mjup) 4.8842 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1161 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0394
Orbital Period(Observed/Estimated) 14.37 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.2989
Star Radiation at Atmospheric Boundary: 109338.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 811.6 (K)
Blackbody T 0.3(K) 762.2 (K)
Blackbody T 0.7(K) 616.7 (K)
Tidally Locked Blackbody T 0.1(K) 965.1 (K)
Tidally Locked Blackbody T 0.3(K) 906.4 (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-804
Alternate Name : "2MASS J19332934+4447064, KIC 8628758, KOI-1279, WISE J193329.34+444706.6"
Star Distance(LY) : 2117.8
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 5.2 (GY)
Temperature : 5705 (K)
Spectral type : G2
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 3.6
Apparent Magnitude: 12.6
Right Ascension(RA) 293.3723
Declination (DEC) 44.7851
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 676 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-804&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-804%20b/
Kepler-804 b
Kepler-804 b

  • Kepler-804 b is an exoplanet orbiting the star Kepler-804, located about 2117.8 light-years (649.3 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-804 has apparent magnitude of 12.6, 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 5705 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-804 b orbits around the star Kepler-804 every 14.4 days with its orbital distance of 0.12 AU ( 17366102.7 km)
  • (Projected orbit of Kepler-804 b around its host star Kepler-804)


  • The Star Kepler-804 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.751 AU ( 112336016.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.038 AU ( 155277731.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.582 AU ( 236608899.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.327 AU ( 348180360.5 km)
  • Radiation at Planetary Boundary of Kepler-804 b : 109338.40 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-804)



  • Kopparapu Recent Venus for Star Kepler-804 distance : 0.782 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-804 distance : 0.990 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-804 distance : 0.956 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-804 distance : 1.048 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-804 distance : 1.752 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-804 distance : 1.847 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-804)



  • Original Kopparapu Recent Venus for Star Kepler-804 distance : 0.782 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-804 distance : 1.017 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-804 distance : 1.034 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-804 distance : 1.782 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-804 distance : 1.853 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-804)



    (Position in Stellar Map of star Kepler-804 and its Exoplanet Kepler-804 b)



    (Zoomed position in Stellar Map of star Kepler-804 and its Exoplanet Kepler-804 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-804*)
    *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