Imaginary Picture of Kepler-1807 b

Display orbital revolution of Kepler-1807 b around the hoststar Kepler-1807
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Exoplanet Name : Kepler-1807 b
Alternate Name : "KOI-2204 b, KOI-2204.01"
Status : Confirmed
Radius (Rjup / Re): 0.2412 (Rjup) 2.7039 (Rearth)
Mass (Mjup / Me): 0.0209 (Mjup) 6.6538 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0988 (AU) 0.0988 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0297
Orbital Period(Observed/Estimated) 10.86 (Days Obs.) 10.07 (Days Est.)
Surface Gravity (G Earth) 0.9101
Star Radiation at Atmospheric Boundary: 557953.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1219.8 (K)
Blackbody T 0.3(K) 1145.5 (K)
Blackbody T 0.7(K) 926.9 (K)
Tidally Locked Blackbody T 0.1(K) 1450.6 (K)
Tidally Locked Blackbody T 0.3(K) 1362.3 (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-1807
Alternate Name : "KIC 8494542, KOI-2204"
Star Distance(LY) : 4237.8
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.0 (GY)
Temperature : 6363 (K)
Spectral type : F7IV
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.2
Absolute Magnitude: 3.6
Apparent Magnitude: 14.1
Right Ascension(RA) 291.5494
Declination (DEC) 44.5273
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-1807 b
Kepler-1807 b

  • Kepler-1807 b is an exoplanet orbiting the star Kepler-1807, located about 4237.8 light-years (1299.3 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1807 has apparent magnitude of 14.1, with absolute magnitude of 3.6.
  • It is 1.3 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 6363 with its spectral types of F7IV
  • In this planetary system, the extrasolar planet Kepler-1807 b orbits around the star Kepler-1807 every 10.9 days with its orbital distance of 0.10 AU ( 14780269.6 km)
  • (Projected orbit of Kepler-1807 b around its host star Kepler-1807)


  • The Star Kepler-1807 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.444 AU ( 215979131.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.996 AU ( 298539601.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.041 AU ( 454908285.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.475 AU ( 669417470.9 km)
  • Radiation at Planetary Boundary of Kepler-1807 b : 557953.85 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1807)



  • Kopparapu Recent Venus for Star Kepler-1807 distance : 1.444 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1807 distance : 1.829 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1807 distance : 1.766 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1807 distance : 1.936 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1807 distance : 3.189 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1807 distance : 3.363 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1807)



  • Original Kopparapu Recent Venus for Star Kepler-1807 distance : 1.464 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1807 distance : 1.876 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1807 distance : 1.938 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1807 distance : 3.246 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1807 distance : 3.376 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1807)



    (Position in Stellar Map of star Kepler-1807 and its Exoplanet Kepler-1807 b)



    (Zoomed position in Stellar Map of star Kepler-1807 and its Exoplanet Kepler-1807 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1807*)
    *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