Imaginary Picture of Kepler-1809 b

Display orbital revolution of Kepler-1809 b around the hoststar Kepler-1809
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Exoplanet Name : Kepler-1809 b
Alternate Name : "KOI-2219 b, KOI-2219.01"
Status : Confirmed
Radius (Rjup / Re): 0.1350 (Rjup) 1.5130 (Rearth)
Mass (Mjup / Me): 0.0138 (Mjup) 4.3930 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0435 (AU) 0.0435 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0103
Orbital Period(Observed/Estimated) 3.76 (Days Obs.) 3.69 (Days Est.)
Surface Gravity (G Earth) 1.9191
Star Radiation at Atmospheric Boundary: 242821.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 990.8 (K)
Blackbody T 0.3(K) 930.4 (K)
Blackbody T 0.7(K) 752.8 (K)
Tidally Locked Blackbody T 0.1(K) 1178.2 (K)
Tidally Locked Blackbody T 0.3(K) 1106.5 (K)
Size Class: super-Earth-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-1809
Alternate Name : "5357545, KOI-2219"
Star Distance(LY) : 1335.9
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 7.0 (GY)
Temperature : 4922 (K)
Spectral type : K1V
UV portion[%]: 2.9
Visible portion[%]: 36.3
IR portion[%]: 60.8
Metalicity : 0.0
Absolute Magnitude: 6.2
Apparent Magnitude: 14.3
Right Ascension(RA) 290.2654
Declination (DEC) 40.5486
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-1809 b
Kepler-1809 b

  • Kepler-1809 b is an exoplanet orbiting the star Kepler-1809, located about 1335.9 light-years (409.6 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1809 has apparent magnitude of 14.3, 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 4922 with its spectral types of K1V
  • In this planetary system, the extrasolar planet Kepler-1809 b orbits around the star Kepler-1809 every 3.8 days with its orbital distance of 0.04 AU ( 6507507.4 km)
  • (Projected orbit of Kepler-1809 b around its host star Kepler-1809)


  • The Star Kepler-1809 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.419 AU ( 62731852.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.580 AU ( 86711813.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.883 AU ( 132129614.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.300 AU ( 194434516.0 km)
  • Radiation at Planetary Boundary of Kepler-1809 b : 242821.03 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1809)



  • Kopparapu Recent Venus for Star Kepler-1809 distance : 0.455 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1809 distance : 0.576 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1809 distance : 0.557 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1809 distance : 0.611 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1809 distance : 1.048 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1809 distance : 1.106 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1809)



  • Original Kopparapu Recent Venus for Star Kepler-1809 distance : 0.450 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1809 distance : 0.594 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1809 distance : 0.596 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1809 distance : 1.066 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1809 distance : 1.108 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1809)



    (Position in Stellar Map of star Kepler-1809 and its Exoplanet Kepler-1809 b)



    (Zoomed position in Stellar Map of star Kepler-1809 and its Exoplanet Kepler-1809 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1809*)
    *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