Imaginary Picture of Kepler-1687 b

Display orbital revolution of Kepler-1687 b around the hoststar Kepler-1687
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Exoplanet Name : Kepler-1687 b
Alternate Name : "2MASS J19185826+5047133 b, K02588.01, KIC 12156347 b, KOI-2588 b, KOI-2588.01, WISE J191858.27+504713.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1480 (Rjup) 1.6589 (Rearth)
Mass (Mjup / Me): 0.0133 (Mjup) 4.2243 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0522 (AU) 0.0522 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0158
Orbital Period(Observed/Estimated) 5.78 (Days Obs.) 5.80 (Days Est.)
Surface Gravity (G Earth) 1.5350
Star Radiation at Atmospheric Boundary: 61978.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 704.2 (K)
Blackbody T 0.3(K) 661.3 (K)
Blackbody T 0.7(K) 535.1 (K)
Tidally Locked Blackbody T 0.1(K) 837.5 (K)
Tidally Locked Blackbody T 0.3(K) 786.5 (K)
Size Class: super-Earth-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-1687
Alternate Name : "12156347, 2MASS J19185826+5047133, KIC 12156347, KOI-2588, WISE J191858.27+504713.4"
Star Distance(LY) : 1376.4
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4249 (K)
Spectral type : K6
UV portion[%]: 0.9
Visible portion[%]: 27.2
IR portion[%]: 71.9
Metalicity : -0.2
Absolute Magnitude: 6.8
Apparent Magnitude: 15.0
Right Ascension(RA) 289.7428
Declination (DEC) 50.7870
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-1687+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1687 b
Kepler-1687 b

  • Kepler-1687 b is an exoplanet orbiting the star Kepler-1687, located about 1376.4 light-years (422.0 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1687 has apparent magnitude of 15.0, with absolute magnitude of 6.8.
  • It is 0.6 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4249 with its spectral types of K6
  • In this planetary system, the extrasolar planet Kepler-1687 b orbits around the star Kepler-1687 every 5.8 days with its orbital distance of 0.05 AU ( 7809008.9 km)
  • (Projected orbit of Kepler-1687 b around its host star Kepler-1687)


  • The Star Kepler-1687 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.254 AU ( 38031629.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.351 AU ( 52569650.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.535 AU ( 80104513.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.788 AU ( 117877301.2 km)
  • Radiation at Planetary Boundary of Kepler-1687 b : 61977.98 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1687)



  • Kopparapu Recent Venus for Star Kepler-1687 distance : 0.283 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1687 distance : 0.358 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1687 distance : 0.346 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1687 distance : 0.380 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1687 distance : 0.672 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1687 distance : 0.708 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1687)



  • Original Kopparapu Recent Venus for Star Kepler-1687 distance : 0.279 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1687 distance : 0.370 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1687 distance : 0.370 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1687 distance : 0.682 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1687 distance : 0.710 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1687)



    (Position in Stellar Map of star Kepler-1687 and its Exoplanet Kepler-1687 b)



    (Zoomed position in Stellar Map of star Kepler-1687 and its Exoplanet Kepler-1687 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1687*)
    *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