Imaginary Picture of Kepler-1689 b

Display orbital revolution of Kepler-1689 b around the hoststar Kepler-1689
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Exoplanet Name : Kepler-1689 b
Alternate Name : "2MASS J19261781+3839214 b, K02755.01, KIC 3545135 b, KOI-2755 b, KOI-2755.01, WISE J192617.80+383921.3 b"
Status : Confirmed
Radius (Rjup / Re): 0.0840 (Rjup) 0.9416 (Rearth)
Mass (Mjup / Me): 0.0025 (Mjup) 0.7893 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0791 (AU) 0.0791 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0232
Orbital Period(Observed/Estimated) 8.48 (Days Obs.) 8.49 (Days Est.)
Surface Gravity (G Earth) 0.8903
Star Radiation at Atmospheric Boundary: 205259.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 950.0 (K)
Blackbody T 0.3(K) 892.1 (K)
Blackbody T 0.7(K) 721.8 (K)
Tidally Locked Blackbody T 0.1(K) 1129.7 (K)
Tidally Locked Blackbody T 0.3(K) 1060.9 (K)
Size Class: 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-1689
Alternate Name : "3545135, 2MASS J19261781+3839214, KIC 3545135, KOI-2755, WISE J192617.80+383921.3"
Star Distance(LY) : 967.5
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5806 (K)
Spectral type : G2
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.2
Absolute Magnitude: 4.6
Apparent Magnitude: 12.0
Right Ascension(RA) 291.5742
Declination (DEC) 38.6560
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-1689+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1689 b
Kepler-1689 b

  • Kepler-1689 b is an exoplanet orbiting the star Kepler-1689, located about 967.5 light-years (296.6 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1689 has apparent magnitude of 12.0, with absolute magnitude of 4.6.
  • It is 0.9 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5806 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-1689 b orbits around the star Kepler-1689 every 8.5 days with its orbital distance of 0.08 AU ( 11833191.6 km)
  • (Projected orbit of Kepler-1689 b around its host star Kepler-1689)


  • The Star Kepler-1689 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.701 AU ( 104877761.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.969 AU ( 144968474.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.477 AU ( 220899872.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.173 AU ( 325063840.0 km)
  • Radiation at Planetary Boundary of Kepler-1689 b : 205259.11 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1689)



  • Kopparapu Recent Venus for Star Kepler-1689 distance : 0.725 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1689 distance : 0.919 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1689 distance : 0.887 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1689 distance : 0.973 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1689 distance : 1.621 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1689 distance : 1.710 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1689)



  • Original Kopparapu Recent Venus for Star Kepler-1689 distance : 0.727 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1689 distance : 0.944 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1689 distance : 0.962 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1689 distance : 1.649 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1689 distance : 1.715 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1689)



    (Position in Stellar Map of star Kepler-1689 and its Exoplanet Kepler-1689 b)



    (Zoomed position in Stellar Map of star Kepler-1689 and its Exoplanet Kepler-1689 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1689*)
    *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