Imaginary Picture of Kepler-1685 b

Display orbital revolution of Kepler-1685 b around the hoststar Kepler-1685
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Exoplanet Name : Kepler-1685 b
Alternate Name : "2MASS J19444518+4356126 b, K02504.01, KIC 8110767 b, KOI-2504 b, KOI-2504.01, WISE J194445.20+435612.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.2300 (Rjup) 2.5781 (Rearth)
Mass (Mjup / Me): 0.0200 (Mjup) 6.3653 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1485 (AU) 0.1485 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0561
Orbital Period(Observed/Estimated) 20.49 (Days Obs.) 20.52 (Days Est.)
Surface Gravity (G Earth) 0.9577
Star Radiation at Atmospheric Boundary: 29032.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 582.6 (K)
Blackbody T 0.3(K) 547.1 (K)
Blackbody T 0.7(K) 442.7 (K)
Tidally Locked Blackbody T 0.1(K) 692.8 (K)
Tidally Locked Blackbody T 0.3(K) 650.6 (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-1685
Alternate Name : "8110767, 2MASS J19444518+4356126, KIC 8110767, KOI-2504, WISE J194445.20+435612.6"
Star Distance(LY) : 3844.8
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5378 (K)
Spectral type : G7
UV portion[%]: 6.3
Visible portion[%]: 42.2
IR portion[%]: 51.5
Metalicity : 0.2
Absolute Magnitude: 5.3
Apparent Magnitude: 15.7
Right Ascension(RA) 296.1883
Declination (DEC) 43.9368
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1685+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1685 b
Kepler-1685 b

  • Kepler-1685 b is an exoplanet orbiting the star Kepler-1685, located about 3844.8 light-years (1178.8 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1685 has apparent magnitude of 15.7, with absolute magnitude of 5.3.
  • It is 1.0 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5378 with its spectral types of G7
  • In this planetary system, the extrasolar planet Kepler-1685 b orbits around the star Kepler-1685 every 20.5 days with its orbital distance of 0.15 AU ( 22215283.8 km)
  • (Projected orbit of Kepler-1685 b around its host star Kepler-1685)


  • The Star Kepler-1685 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.495 AU ( 74050296.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.684 AU ( 102356860.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.043 AU ( 155969204.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.534 AU ( 229515516.9 km)
  • Radiation at Planetary Boundary of Kepler-1685 b : 29032.82 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1685)



  • Kopparapu Recent Venus for Star Kepler-1685 distance : 0.525 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1685 distance : 0.665 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1685 distance : 0.642 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1685 distance : 0.704 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1685 distance : 1.188 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1685 distance : 1.254 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1685)



  • Original Kopparapu Recent Venus for Star Kepler-1685 distance : 0.522 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1685 distance : 0.684 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1685 distance : 0.691 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1685 distance : 1.209 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1685 distance : 1.257 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1685)



    (Position in Stellar Map of star Kepler-1685 and its Exoplanet Kepler-1685 b)



    (Zoomed position in Stellar Map of star Kepler-1685 and its Exoplanet Kepler-1685 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1685*)
    *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