Imaginary Picture of Kepler-1656 b

Display orbital revolution of Kepler-1656 b around the hoststar Kepler-1656
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Exoplanet Name : Kepler-1656 b
Alternate Name : "2MASS J18575331+3954425 b, K00367.01, KIC 4815520 b, KOI-367 b, KOI-367.01, WISE J185753.33+395442.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.4480 (Rjup) 5.0216 (Rearth)
Mass (Mjup / Me): 0.1504 (Mjup) 47.8179 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1974 (AU) 0.1974 (AU Est.)
Eccentricity : 0.8380
Orbital Period(Yrs) 0.0864
Orbital Period(Observed/Estimated) 31.56 (Days Obs.) 31.56 (Days Est.)
Surface Gravity (G Earth) 1.8963
Star Radiation at Atmospheric Boundary: 41078.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 635.4 (K)
Blackbody T 0.3(K) 596.7 (K)
Blackbody T 0.7(K) 482.8 (K)
Tidally Locked Blackbody T 0.1(K) 755.6 (K)
Tidally Locked Blackbody T 0.3(K) 709.6 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1656
Alternate Name : "KOI-367, KIC-4815520, 2MASS J18575331+3954425, KIC 4815520, WISE J185753.33+395442.7"
Star Distance(LY) : 609.5
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 6.3 (GY)
Temperature : 5731 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.7
Metalicity : 0.2
Absolute Magnitude: 5.2
Apparent Magnitude: 11.6
Right Ascension(RA) 284.4722
Declination (DEC) 39.9118
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-1656 b
Kepler-1656 b

  • Kepler-1656 b is an exoplanet orbiting the star Kepler-1656, located about 609.5 light-years (186.9 pc) away from Solar System. Its discovery was publicly announced on 2018.
  • The host star Kepler-1656 has apparent magnitude of 11.6, with absolute magnitude of 5.2.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5731 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1656 b orbits around the star Kepler-1656 every 31.6 days with its orbital distance of 0.20 AU ( 29530619.7 km)
  • (Projected orbit of Kepler-1656 b around its host star Kepler-1656)


  • The Star Kepler-1656 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.783 AU ( 117087791.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.082 AU ( 161845926.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.649 AU ( 246617375.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.426 AU ( 362908271.9 km)
  • Radiation at Planetary Boundary of Kepler-1656 b : 41078.78 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1656)



  • Kopparapu Recent Venus for Star Kepler-1656 distance : 0.814 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1656 distance : 1.030 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1656 distance : 0.995 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1656 distance : 1.091 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1656 distance : 1.821 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1656 distance : 1.921 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1656)



  • Original Kopparapu Recent Venus for Star Kepler-1656 distance : 0.814 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1656 distance : 1.059 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1656 distance : 1.077 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1656 distance : 1.853 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1656 distance : 1.927 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1656)



    (Position in Stellar Map of star Kepler-1656 and its Exoplanet Kepler-1656 b)



    (Zoomed position in Stellar Map of star Kepler-1656 and its Exoplanet Kepler-1656 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1656*)
    *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