Imaginary Picture of Kepler-1825 b

Display orbital revolution of Kepler-1825 b around the hoststar Kepler-1825
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Exoplanet Name : Kepler-1825 b
Alternate Name : "KOI-2325 b, KOI-2325.01"
Status : Confirmed
Radius (Rjup / Re): 0.1269 (Rjup) 1.4220 (Rearth)
Mass (Mjup / Me): 0.0110 (Mjup) 3.4991 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0187 (AU) 0.0187 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0028
Orbital Period(Observed/Estimated) 1.03 (Days Obs.) 1.02 (Days Est.)
Surface Gravity (G Earth) 1.7305
Star Radiation at Atmospheric Boundary: 1142637.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1459.2 (K)
Blackbody T 0.3(K) 1370.4 (K)
Blackbody T 0.7(K) 1108.8 (K)
Tidally Locked Blackbody T 0.1(K) 1735.3 (K)
Tidally Locked Blackbody T 0.3(K) 1629.6 (K)
Size Class: super-Earth-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-1825
Alternate Name : "KIC 7120108, KOI-2325"
Star Distance(LY) : 1403.3
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 14.4 (GY)
Temperature : 5021 (K)
Spectral type : K0V
UV portion[%]: 3.4
Visible portion[%]: 37.3
IR portion[%]: 59.3
Metalicity : 0.1
Absolute Magnitude: 6.4
Apparent Magnitude: 14.6
Right Ascension(RA) 292.5140
Declination (DEC) 42.6518
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-1825 b
Kepler-1825 b

  • Kepler-1825 b is an exoplanet orbiting the star Kepler-1825, located about 1403.3 light-years (430.3 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1825 has apparent magnitude of 14.6, with absolute magnitude of 6.4.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 5021 with its spectral types of K0V
  • In this planetary system, the extrasolar planet Kepler-1825 b orbits around the star Kepler-1825 every 1.0 days with its orbital distance of 0.02 AU ( 2797480.2 km)
  • (Projected orbit of Kepler-1825 b around its host star Kepler-1825)


  • The Star Kepler-1825 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.391 AU ( 58499422.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.541 AU ( 80861489.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.824 AU ( 123215015.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.212 AU ( 181316292.6 km)
  • Radiation at Planetary Boundary of Kepler-1825 b : 1142637.64 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1825)



  • Kopparapu Recent Venus for Star Kepler-1825 distance : 0.423 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1825 distance : 0.535 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1825 distance : 0.517 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1825 distance : 0.567 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1825 distance : 0.969 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1825 distance : 1.022 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1825)



  • Original Kopparapu Recent Venus for Star Kepler-1825 distance : 0.418 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1825 distance : 0.551 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1825 distance : 0.553 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1825 distance : 0.985 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1825 distance : 1.025 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1825)



    (Position in Stellar Map of star Kepler-1825 and its Exoplanet Kepler-1825 b)



    (Zoomed position in Stellar Map of star Kepler-1825 and its Exoplanet Kepler-1825 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1825*)
    *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