Imaginary Picture of Kepler-1863 b

Display orbital revolution of Kepler-1863 b around the hoststar Kepler-1863
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Exoplanet Name : Kepler-1863 b
Alternate Name : "KOI-2631 b, KOI-2631.01"
Status : Confirmed
Radius (Rjup / Re): 0.2019 (Rjup) 2.2630 (Rearth)
Mass (Mjup / Me): 0.0177 (Mjup) 5.6385 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2555 (AU) 0.2555 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.1232
Orbital Period(Observed/Estimated) 45.00 (Days Obs.) 46.03 (Days Est.)
Surface Gravity (G Earth) 1.1010
Star Radiation at Atmospheric Boundary: 53487.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 678.7 (K)
Blackbody T 0.3(K) 637.4 (K)
Blackbody T 0.7(K) 515.7 (K)
Tidally Locked Blackbody T 0.1(K) 807.2 (K)
Tidally Locked Blackbody T 0.3(K) 758.0 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1863
Alternate Name : "KIC 7584650, KOI-2631"
Star Distance(LY) : 2823.0
Stellar Radius(Rsun) : 1.6 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 4.7 (GY)
Temperature : 5828 (K)
Spectral type : G1IV
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.5
Absolute Magnitude: 4.0
Apparent Magnitude: 13.6
Right Ascension(RA) 282.2397
Declination (DEC) 43.2440
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
Kepler-1863 b
Kepler-1863 b

  • Kepler-1863 b is an exoplanet orbiting the star Kepler-1863, located about 2823.0 light-years (865.5 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1863 has apparent magnitude of 13.6, with absolute magnitude of 4.0.
  • It is 1.1 times more massive and 1.6 times bigger compared with our Sun. The surface temperature is 5828 with its spectral types of G1IV
  • In this planetary system, the extrasolar planet Kepler-1863 b orbits around the star Kepler-1863 every 45.0 days with its orbital distance of 0.26 AU ( 38222256.0 km)
  • (Projected orbit of Kepler-1863 b around its host star Kepler-1863)


  • The Star Kepler-1863 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.156 AU ( 172931211.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.598 AU ( 239036126.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.435 AU ( 364238158.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.583 AU ( 535992405.9 km)
  • Radiation at Planetary Boundary of Kepler-1863 b : 53487.65 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1863)



  • Kopparapu Recent Venus for Star Kepler-1863 distance : 1.195 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1863 distance : 1.513 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1863 distance : 1.461 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1863 distance : 1.602 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1863 distance : 2.668 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1863 distance : 2.814 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1863)



  • Original Kopparapu Recent Venus for Star Kepler-1863 distance : 1.197 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1863 distance : 1.554 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1863 distance : 1.584 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1863 distance : 2.715 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1863 distance : 2.823 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1863)



    (Position in Stellar Map of star Kepler-1863 and its Exoplanet Kepler-1863 b)



    (Zoomed position in Stellar Map of star Kepler-1863 and its Exoplanet Kepler-1863 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1863*)
    *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