Imaginary Picture of Kepler-1663 b

Display orbital revolution of Kepler-1663 b around the hoststar Kepler-1663
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Exoplanet Name : Kepler-1663 b
Alternate Name : "2MASS J19213636+4849213 b, K00252.01, KIC 11187837 b, KOI-252 b, KOI-252.01, WISE J192136.36+484921.7 b"
Status : Confirmed
Radius (Rjup / Re): 0.2950 (Rjup) 3.3067 (Rearth)
Mass (Mjup / Me): 0.0252 (Mjup) 8.0231 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.1250 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0482
Orbital Period(Observed/Estimated) 17.60 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 0.7338
Star Radiation at Atmospheric Boundary: 8193.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 424.6 (K)
Blackbody T 0.3(K) 398.8 (K)
Blackbody T 0.7(K) 322.7 (K)
Tidally Locked Blackbody T 0.1(K) 505.0 (K)
Tidally Locked Blackbody T 0.3(K) 474.2 (K)
Size Class: 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-1663
Alternate Name : "2MASS J19213636+4849213, KIC 11187837, KOI-252, WISE J192136.36+484921.7"
Star Distance(LY) : 1112.9
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3793 (K)
Spectral type : M0
UV portion[%]: 0.3
Visible portion[%]: 13.6
IR portion[%]: 86.1
Metalicity : 0.0
Absolute Magnitude: 5.8
Apparent Magnitude: 13.4
Right Ascension(RA) 290.4015
Declination (DEC) 48.8226
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-1663&submit=SIMBAD+search
Open Exoplanet Database Link
Kepler-1663 b
Kepler-1663 b

  • Kepler-1663 b is an exoplanet orbiting the star Kepler-1663, located about 1112.9 light-years (341.2 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star Kepler-1663 has apparent magnitude of 13.4, with absolute magnitude of 5.8.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 3793 with its spectral types of M0
  • In this planetary system, the extrasolar planet Kepler-1663 b orbits around the star Kepler-1663 every 17.6 days with its orbital distance of 0.12 AU ( 18694296.7 km)
  • (Projected orbit of Kepler-1663 b around its host star Kepler-1663)


  • The Star Kepler-1663 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.221 AU ( 33104127.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.306 AU ( 45758555.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.466 AU ( 69725912.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.686 AU ( 102604734.1 km)
  • Radiation at Planetary Boundary of Kepler-1663 b : 8193.80 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1663)



  • Kopparapu Recent Venus for Star Kepler-1663 distance : 0.249 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1663 distance : 0.315 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1663 distance : 0.304 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1663 distance : 0.335 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1663 distance : 0.604 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1663 distance : 0.637 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1663)



  • Original Kopparapu Recent Venus for Star Kepler-1663 distance : 0.246 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1663 distance : 0.326 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1663 distance : 0.326 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1663 distance : 0.614 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1663 distance : 0.638 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1663)



    (Position in Stellar Map of star Kepler-1663 and its Exoplanet Kepler-1663 b)



    (Zoomed position in Stellar Map of star Kepler-1663 and its Exoplanet Kepler-1663 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1663*)
    *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