Imaginary Picture of Kepler-1665 b

Display orbital revolution of Kepler-1665 b around the hoststar Kepler-1665
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Exoplanet Name : Kepler-1665 b
Alternate Name : "2MASS J19213508+4102242 b, K00650.01, KIC 5786676 b, KOI-650 b, KOI-650.01, WISE J192135.06+410223.8 b"
Status : Confirmed
Radius (Rjup / Re): 0.2530 (Rjup) 2.8359 (Rearth)
Mass (Mjup / Me): 0.0219 (Mjup) 6.9552 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0928 (AU) 0.0928 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0327
Orbital Period(Observed/Estimated) 11.95 (Days Obs.) 11.95 (Days Est.)
Surface Gravity (G Earth) 0.8648
Star Radiation at Atmospheric Boundary: 54671.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 682.5 (K)
Blackbody T 0.3(K) 640.9 (K)
Blackbody T 0.7(K) 518.6 (K)
Tidally Locked Blackbody T 0.1(K) 811.6 (K)
Tidally Locked Blackbody T 0.3(K) 762.2 (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-1665
Alternate Name : "5786676, 2MASS J19213508+4102242, KIC 5786676, KOI-650, WISE J192135.06+410223.8"
Star Distance(LY) : 1105.0
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4949 (K)
Spectral type : K2
UV portion[%]: 3.0
Visible portion[%]: 36.6
IR portion[%]: 60.4
Metalicity : -0.1
Absolute Magnitude: 5.6
Apparent Magnitude: 13.3
Right Ascension(RA) 290.3962
Declination (DEC) 41.0401
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-1665&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1665 b
Kepler-1665 b

  • Kepler-1665 b is an exoplanet orbiting the star Kepler-1665, located about 1105.0 light-years (338.8 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1665 has apparent magnitude of 13.3, with absolute magnitude of 5.6.
  • It is 0.7 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4949 with its spectral types of K2
  • In this planetary system, the extrasolar planet Kepler-1665 b orbits around the star Kepler-1665 every 12.0 days with its orbital distance of 0.09 AU ( 13882682.4 km)
  • (Projected orbit of Kepler-1665 b around its host star Kepler-1665)


  • The Star Kepler-1665 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.424 AU ( 63501357.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.587 AU ( 87775470.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.894 AU ( 133750392.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.316 AU ( 196819561.5 km)
  • Radiation at Planetary Boundary of Kepler-1665 b : 54671.21 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1665)



  • Kopparapu Recent Venus for Star Kepler-1665 distance : 0.460 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1665 distance : 0.583 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1665 distance : 0.563 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1665 distance : 0.618 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1665 distance : 1.058 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1665 distance : 1.116 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1665)



  • Original Kopparapu Recent Venus for Star Kepler-1665 distance : 0.455 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1665 distance : 0.601 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1665 distance : 0.602 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1665 distance : 1.076 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1665 distance : 1.119 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1665)



    (Position in Stellar Map of star Kepler-1665 and its Exoplanet Kepler-1665 b)



    (Zoomed position in Stellar Map of star Kepler-1665 and its Exoplanet Kepler-1665 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1665*)
    *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