Imaginary Picture of Kepler-1845 b

Display orbital revolution of Kepler-1845 b around the hoststar Kepler-1845
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Exoplanet Name : Kepler-1845 b
Alternate Name : "KOI-2490 b, KOI-2490.01"
Status : Confirmed
Radius (Rjup / Re): 0.2175 (Rjup) 2.4381 (Rearth)
Mass (Mjup / Me): 0.0190 (Mjup) 6.0432 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0885 (AU) 0.0885 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0318
Orbital Period(Observed/Estimated) 11.61 (Days Obs.) 10.85 (Days Est.)
Surface Gravity (G Earth) 1.0167
Star Radiation at Atmospheric Boundary: 42805.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 642.0 (K)
Blackbody T 0.3(K) 602.9 (K)
Blackbody T 0.7(K) 487.8 (K)
Tidally Locked Blackbody T 0.1(K) 763.4 (K)
Tidally Locked Blackbody T 0.3(K) 717.0 (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-1845
Alternate Name : "KIC 3122913, KOI-2490"
Star Distance(LY) : 2318.1
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 1.0 (GY)
Temperature : 4836 (K)
Spectral type : K2V
UV portion[%]: 2.5
Visible portion[%]: 35.7
IR portion[%]: 61.8
Metalicity : -0.0
Absolute Magnitude: 6.9
Apparent Magnitude: 16.1
Right Ascension(RA) 292.9016
Declination (DEC) 38.2971
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-1845 b
Kepler-1845 b

  • Kepler-1845 b is an exoplanet orbiting the star Kepler-1845, located about 2318.1 light-years (710.7 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1845 has apparent magnitude of 16.1, with absolute magnitude of 6.9.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4836 with its spectral types of K2V
  • In this planetary system, the extrasolar planet Kepler-1845 b orbits around the star Kepler-1845 every 11.6 days with its orbital distance of 0.09 AU ( 13239411.6 km)
  • (Projected orbit of Kepler-1845 b around its host star Kepler-1845)


  • The Star Kepler-1845 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.358 AU ( 53585848.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.495 AU ( 74069646.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.754 AU ( 112865749.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.110 AU ( 166086894.0 km)
  • Radiation at Planetary Boundary of Kepler-1845 b : 42805.77 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1845)



  • Kopparapu Recent Venus for Star Kepler-1845 distance : 0.390 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1845 distance : 0.494 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1845 distance : 0.477 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1845 distance : 0.524 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1845 distance : 0.902 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1845 distance : 0.951 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1845)



  • Original Kopparapu Recent Venus for Star Kepler-1845 distance : 0.386 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1845 distance : 0.510 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1845 distance : 0.510 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1845 distance : 0.917 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1845 distance : 0.954 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1845)



    (Position in Stellar Map of star Kepler-1845 and its Exoplanet Kepler-1845 b)



    (Zoomed position in Stellar Map of star Kepler-1845 and its Exoplanet Kepler-1845 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1845*)
    *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