Imaginary Picture of Kepler-1806 b

Display orbital revolution of Kepler-1806 b around the hoststar Kepler-1806
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Exoplanet Name : Kepler-1806 b
Alternate Name : "KOI-2199 b, KOI-2199.01"
Status : Confirmed
Radius (Rjup / Re): 0.2101 (Rjup) 2.3550 (Rearth)
Mass (Mjup / Me): 0.0184 (Mjup) 5.8515 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0813 (AU) 0.0813 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0247
Orbital Period(Observed/Estimated) 9.03 (Days Obs.) 9.18 (Days Est.)
Surface Gravity (G Earth) 1.0551
Star Radiation at Atmospheric Boundary: 75634.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 740.2 (K)
Blackbody T 0.3(K) 695.1 (K)
Blackbody T 0.7(K) 562.4 (K)
Tidally Locked Blackbody T 0.1(K) 880.2 (K)
Tidally Locked Blackbody T 0.3(K) 826.6 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1806
Alternate Name : "KIC 11705004, KOI-2199"
Star Distance(LY) : 3190.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.6 (GY)
Temperature : 5078 (K)
Spectral type : K0V
UV portion[%]: 3.8
Visible portion[%]: 38.1
IR portion[%]: 58.1
Metalicity : -0.0
Absolute Magnitude: 6.2
Apparent Magnitude: 16.2
Right Ascension(RA) 287.5350
Declination (DEC) 49.8017
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-1806 b
Kepler-1806 b

  • Kepler-1806 b is an exoplanet orbiting the star Kepler-1806, located about 3190.0 light-years (978.1 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1806 has apparent magnitude of 16.2, with absolute magnitude of 6.2.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5078 with its spectral types of K0V
  • In this planetary system, the extrasolar planet Kepler-1806 b orbits around the star Kepler-1806 every 9.0 days with its orbital distance of 0.08 AU ( 12162306.9 km)
  • (Projected orbit of Kepler-1806 b around its host star Kepler-1806)


  • The Star Kepler-1806 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.437 AU ( 65434270.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.605 AU ( 90447262.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.921 AU ( 137821611.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.356 AU ( 202810539.6 km)
  • Radiation at Planetary Boundary of Kepler-1806 b : 75634.17 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1806)



  • Kopparapu Recent Venus for Star Kepler-1806 distance : 0.471 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1806 distance : 0.597 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1806 distance : 0.576 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1806 distance : 0.633 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1806 distance : 1.078 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1806 distance : 1.138 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1806)



  • Original Kopparapu Recent Venus for Star Kepler-1806 distance : 0.467 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1806 distance : 0.615 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1806 distance : 0.618 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1806 distance : 1.097 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1806 distance : 1.140 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1806)



    (Position in Stellar Map of star Kepler-1806 and its Exoplanet Kepler-1806 b)



    (Zoomed position in Stellar Map of star Kepler-1806 and its Exoplanet Kepler-1806 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1806*)
    *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