Imaginary Picture of Kepler-1691 b

Display orbital revolution of Kepler-1691 b around the hoststar Kepler-1691
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Exoplanet Name : Kepler-1691 b
Alternate Name : "2MASS J19050106+4101187 b, K02802.01, KIC 5775129 b, KOI-2802 b, KOI-2802.01, WISE J190501.05+410118.6 b"
Status : Confirmed
Radius (Rjup / Re): 0.1640 (Rjup) 1.8383 (Rearth)
Mass (Mjup / Me): 0.0146 (Mjup) 4.6475 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0514 (AU) 0.0514 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0105
Orbital Period(Observed/Estimated) 3.85 (Days Obs.) 3.85 (Days Est.)
Surface Gravity (G Earth) 1.3753
Star Radiation at Atmospheric Boundary: 744435.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1311.0 (K)
Blackbody T 0.3(K) 1231.2 (K)
Blackbody T 0.7(K) 996.1 (K)
Tidally Locked Blackbody T 0.1(K) 1559.0 (K)
Tidally Locked Blackbody T 0.3(K) 1464.1 (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-1691
Alternate Name : "5775129, 2MASS J19050106+4101187, KIC 5775129, KOI-2802, WISE J190501.05+410118.6"
Star Distance(LY) : 4290.9
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5753 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.7
IR portion[%]: 47.6
Metalicity : 0.1
Absolute Magnitude: 4.2
Apparent Magnitude: 14.8
Right Ascension(RA) 286.2544
Declination (DEC) 41.0219
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-1691+&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1691 b
Kepler-1691 b

  • Kepler-1691 b is an exoplanet orbiting the star Kepler-1691, located about 4290.9 light-years (1315.6 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1691 has apparent magnitude of 14.8, with absolute magnitude of 4.2.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5753 with its spectral types of G3
  • In this planetary system, the extrasolar planet Kepler-1691 b orbits around the star Kepler-1691 every 3.8 days with its orbital distance of 0.05 AU ( 7689330.6 km)
  • (Projected orbit of Kepler-1691 b around its host star Kepler-1691)


  • The Star Kepler-1691 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.868 AU ( 129787309.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.199 AU ( 179399979.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.827 AU ( 273365868.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.689 AU ( 402269850.1 km)
  • Radiation at Planetary Boundary of Kepler-1691 b : 744435.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1691)



  • Kopparapu Recent Venus for Star Kepler-1691 distance : 0.901 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1691 distance : 1.140 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1691 distance : 1.101 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1691 distance : 1.208 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1691 distance : 2.015 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1691 distance : 2.126 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1691)



  • Original Kopparapu Recent Venus for Star Kepler-1691 distance : 0.901 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1691 distance : 1.172 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1691 distance : 1.193 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1691 distance : 2.051 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1691 distance : 2.132 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1691)



    (Position in Stellar Map of star Kepler-1691 and its Exoplanet Kepler-1691 b)



    (Zoomed position in Stellar Map of star Kepler-1691 and its Exoplanet Kepler-1691 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1691*)
    *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