Imaginary Picture of Kepler-1797 b

Display orbital revolution of Kepler-1797 b around the hoststar Kepler-1797
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Exoplanet Name : Kepler-1797 b
Alternate Name : "KOI-2125 b, KOI-2125.01"
Status : Confirmed
Radius (Rjup / Re): 0.2728 (Rjup) 3.0577 (Rearth)
Mass (Mjup / Me): 0.0235 (Mjup) 7.4599 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1637 (AU) 0.1637 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0640
Orbital Period(Observed/Estimated) 23.36 (Days Obs.) 23.95 (Days Est.)
Surface Gravity (G Earth) 0.7979
Star Radiation at Atmospheric Boundary: 58500.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 694.1 (K)
Blackbody T 0.3(K) 651.8 (K)
Blackbody T 0.7(K) 527.4 (K)
Tidally Locked Blackbody T 0.1(K) 825.4 (K)
Tidally Locked Blackbody T 0.3(K) 775.2 (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-1797
Alternate Name : "9405595, KOI-2125"
Star Distance(LY) : 4365.6
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.4 (GY)
Temperature : 5709 (K)
Spectral type : G2V
UV portion[%]: 7.6
Visible portion[%]: 44.4
IR portion[%]: 47.9
Metalicity : 0.0
Absolute Magnitude: 4.8
Apparent Magnitude: 15.4
Right Ascension(RA) 292.4643
Declination (DEC) 45.9683
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-1797 b
Kepler-1797 b

  • Kepler-1797 b is an exoplanet orbiting the star Kepler-1797, located about 4365.6 light-years (1338.5 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1797 has apparent magnitude of 15.4, with absolute magnitude of 4.8.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5709 with its spectral types of G2V
  • In this planetary system, the extrasolar planet Kepler-1797 b orbits around the star Kepler-1797 every 23.4 days with its orbital distance of 0.16 AU ( 24489171.4 km)
  • (Projected orbit of Kepler-1797 b around its host star Kepler-1797)


  • The Star Kepler-1797 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.775 AU ( 115873687.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.071 AU ( 160167716.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.631 AU ( 244060155.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.401 AU ( 359145210.3 km)
  • Radiation at Planetary Boundary of Kepler-1797 b : 58500.68 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1797)



  • Kopparapu Recent Venus for Star Kepler-1797 distance : 0.806 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1797 distance : 1.021 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1797 distance : 0.986 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1797 distance : 1.081 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1797 distance : 1.806 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1797 distance : 1.905 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1797)



  • Original Kopparapu Recent Venus for Star Kepler-1797 distance : 0.806 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1797 distance : 1.049 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1797 distance : 1.067 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1797 distance : 1.838 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1797 distance : 1.911 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1797)



    (Position in Stellar Map of star Kepler-1797 and its Exoplanet Kepler-1797 b)



    (Zoomed position in Stellar Map of star Kepler-1797 and its Exoplanet Kepler-1797 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1797*)
    *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