Imaginary Picture of Kepler-1671 b

Display orbital revolution of Kepler-1671 b around the hoststar Kepler-1671
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Exoplanet Name : Kepler-1671 b
Alternate Name : "2MASS J19265960+3926487 b, K01738.01, KIC 4365645 b, KOI-1738 b, KOI-1738.01, WISE J192659.61+392648.5 b"
Status : Confirmed
Radius (Rjup / Re): 0.1180 (Rjup) 1.3227 (Rearth)
Mass (Mjup / Me): 0.0084 (Mjup) 2.6861 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0464 (AU) 0.0464 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0114
Orbital Period(Observed/Estimated) 4.17 (Days Obs.) 4.17 (Days Est.)
Surface Gravity (G Earth) 1.5354
Star Radiation at Atmospheric Boundary: 322335.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1063.5 (K)
Blackbody T 0.3(K) 998.7 (K)
Blackbody T 0.7(K) 808.1 (K)
Tidally Locked Blackbody T 0.1(K) 1264.7 (K)
Tidally Locked Blackbody T 0.3(K) 1187.7 (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-1671
Alternate Name : "4365645, 2MASS J19265960+3926487, KIC 4365645, KOI-1738, WISE J192659.61+392648.5"
Star Distance(LY) : 1176.7
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5085 (K)
Spectral type : K1
UV portion[%]: 3.8
Visible portion[%]: 38.2
IR portion[%]: 58.0
Metalicity : -0.2
Absolute Magnitude: 5.2
Apparent Magnitude: 13.0
Right Ascension(RA) 291.7484
Declination (DEC) 39.4469
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-1671+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1671 b
Kepler-1671 b

  • Kepler-1671 b is an exoplanet orbiting the star Kepler-1671, located about 1176.7 light-years (360.8 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1671 has apparent magnitude of 13.0, with absolute magnitude of 5.2.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5085 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-1671 b orbits around the star Kepler-1671 every 4.2 days with its orbital distance of 0.05 AU ( 6941341.2 km)
  • (Projected orbit of Kepler-1671 b around its host star Kepler-1671)


  • The Star Kepler-1671 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.515 AU ( 77095291.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.712 AU ( 106565840.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.085 AU ( 162382757.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.597 AU ( 238953341.0 km)
  • Radiation at Planetary Boundary of Kepler-1671 b : 322335.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1671)



  • Kopparapu Recent Venus for Star Kepler-1671 distance : 0.555 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1671 distance : 0.703 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1671 distance : 0.679 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1671 distance : 0.745 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1671 distance : 1.270 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1671 distance : 1.339 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1671)



  • Original Kopparapu Recent Venus for Star Kepler-1671 distance : 0.550 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1671 distance : 0.724 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1671 distance : 0.728 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1671 distance : 1.291 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1671 distance : 1.343 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1671)



    (Position in Stellar Map of star Kepler-1671 and its Exoplanet Kepler-1671 b)



    (Zoomed position in Stellar Map of star Kepler-1671 and its Exoplanet Kepler-1671 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1671*)
    *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