Imaginary Picture of Kepler-1846 b

Display orbital revolution of Kepler-1846 b around the hoststar Kepler-1846
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Exoplanet Name : Kepler-1846 b
Alternate Name : "KOI-2503 b, KOI-2503.01"
Status : Confirmed
Radius (Rjup / Re): 0.1573 (Rjup) 1.7637 (Rearth)
Mass (Mjup / Me): 0.0141 (Mjup) 4.4719 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1089 (AU) 0.1089 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0406
Orbital Period(Observed/Estimated) 14.82 (Days Obs.) 14.68 (Days Est.)
Surface Gravity (G Earth) 1.4376
Star Radiation at Atmospheric Boundary: 33823.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 605.3 (K)
Blackbody T 0.3(K) 568.4 (K)
Blackbody T 0.7(K) 459.9 (K)
Tidally Locked Blackbody T 0.1(K) 719.8 (K)
Tidally Locked Blackbody T 0.3(K) 676.0 (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-1846
Alternate Name : "KIC 8631504, KOI-2503"
Star Distance(LY) : 1221.8
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 14.0 (GY)
Temperature : 4895 (K)
Spectral type : K2V
UV portion[%]: 2.8
Visible portion[%]: 36.1
IR portion[%]: 61.1
Metalicity : 0.3
Absolute Magnitude: 6.5
Apparent Magnitude: 14.4
Right Ascension(RA) 294.3911
Declination (DEC) 44.7630
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-1846 b
Kepler-1846 b

  • Kepler-1846 b is an exoplanet orbiting the star Kepler-1846, located about 1221.8 light-years (374.6 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1846 has apparent magnitude of 14.4, with absolute magnitude of 6.5.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 4895 with its spectral types of K2V
  • In this planetary system, the extrasolar planet Kepler-1846 b orbits around the star Kepler-1846 every 14.8 days with its orbital distance of 0.11 AU ( 16291208.1 km)
  • (Projected orbit of Kepler-1846 b around its host star Kepler-1846)


  • The Star Kepler-1846 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.392 AU ( 58613195.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.542 AU ( 81018753.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.825 AU ( 123454650.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.214 AU ( 181668926.2 km)
  • Radiation at Planetary Boundary of Kepler-1846 b : 33823.90 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1846)



  • Kopparapu Recent Venus for Star Kepler-1846 distance : 0.426 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1846 distance : 0.539 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1846 distance : 0.521 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1846 distance : 0.572 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1846 distance : 0.982 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1846 distance : 1.035 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1846)



  • Original Kopparapu Recent Venus for Star Kepler-1846 distance : 0.421 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1846 distance : 0.556 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1846 distance : 0.557 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1846 distance : 0.998 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1846 distance : 1.038 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1846)



    (Position in Stellar Map of star Kepler-1846 and its Exoplanet Kepler-1846 b)



    (Zoomed position in Stellar Map of star Kepler-1846 and its Exoplanet Kepler-1846 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1846*)
    *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