Imaginary Picture of Kepler-1677 b

Display orbital revolution of Kepler-1677 b around the hoststar Kepler-1677
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Exoplanet Name : Kepler-1677 b
Alternate Name : "2MASS J19535839+4700469 b, K01984.01, KIC 10094670 b, KOI-1984 b, KOI-1984.01, WISE J195358.38+470046.9 b"
Status : Confirmed
Radius (Rjup / Re): 0.2410 (Rjup) 2.7014 (Rearth)
Mass (Mjup / Me): 0.0209 (Mjup) 6.6479 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1634 (AU) 0.1634 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0604
Orbital Period(Observed/Estimated) 22.06 (Days Obs.) 22.07 (Days Est.)
Surface Gravity (G Earth) 0.9110
Star Radiation at Atmospheric Boundary: 75053.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 738.7 (K)
Blackbody T 0.3(K) 693.7 (K)
Blackbody T 0.7(K) 561.3 (K)
Tidally Locked Blackbody T 0.1(K) 878.5 (K)
Tidally Locked Blackbody T 0.3(K) 825.0 (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-1677
Alternate Name : "10094670, 2MASS J19535839+4700469, KIC 10094670, KOI-1984, WISE J195358.38+470046.9"
Star Distance(LY) : 2450.2
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5804 (K)
Spectral type : G2
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 4.1
Apparent Magnitude: 13.5
Right Ascension(RA) 298.4933
Declination (DEC) 47.0130
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-1677+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1677 b
Kepler-1677 b

  • Kepler-1677 b is an exoplanet orbiting the star Kepler-1677, located about 2450.2 light-years (751.2 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1677 has apparent magnitude of 13.5, with absolute magnitude of 4.1.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5804 with its spectral types of G2
  • In this planetary system, the extrasolar planet Kepler-1677 b orbits around the star Kepler-1677 every 22.1 days with its orbital distance of 0.16 AU ( 24444292.1 km)
  • (Projected orbit of Kepler-1677 b around its host star Kepler-1677)


  • The Star Kepler-1677 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.876 AU ( 131006898.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.210 AU ( 181085770.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.845 AU ( 275934639.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.714 AU ( 406049910.3 km)
  • Radiation at Planetary Boundary of Kepler-1677 b : 75053.82 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1677)



  • Kopparapu Recent Venus for Star Kepler-1677 distance : 0.906 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1677 distance : 1.148 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1677 distance : 1.108 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1677 distance : 1.215 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1677 distance : 2.025 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1677 distance : 2.136 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1677)



  • Original Kopparapu Recent Venus for Star Kepler-1677 distance : 0.908 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1677 distance : 1.179 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1677 distance : 1.201 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1677 distance : 2.061 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1677 distance : 2.143 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1677)



    (Position in Stellar Map of star Kepler-1677 and its Exoplanet Kepler-1677 b)



    (Zoomed position in Stellar Map of star Kepler-1677 and its Exoplanet Kepler-1677 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1677*)
    *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