Imaginary Picture of Kepler-825 b

Display orbital revolution of Kepler-825 b around the hoststar Kepler-825
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Exoplanet Name : Kepler-825 b
Alternate Name : "2MASS J19390477+3923546 b, K01342.01, KIC 4275721 b, KOI-1342 b, KOI-1342.01, WISE J193904.76+392354.4 b"
Status : Confirmed
Radius (Rjup / Re): 0.1360 (Rjup) 1.5244 (Rearth)
Mass (Mjup / Me): 0.0142 (Mjup) 4.5162 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0479 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0103
Orbital Period(Observed/Estimated) 3.77 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.9434
Star Radiation at Atmospheric Boundary: 896431.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1373.3 (K)
Blackbody T 0.3(K) 1289.7 (K)
Blackbody T 0.7(K) 1043.5 (K)
Tidally Locked Blackbody T 0.1(K) 1633.2 (K)
Tidally Locked Blackbody T 0.3(K) 1533.7 (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-825
Alternate Name : "2MASS J19390477+3923546, KIC 4275721, KOI-1342, WISE J193904.76+392354.4"
Star Distance(LY) : 2633.7
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.5 (GY)
Temperature : 6222 (K)
Spectral type : G1
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 3.5
Apparent Magnitude: 13.1
Right Ascension(RA) 294.7699
Declination (DEC) 39.3985
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 694 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-825&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-825%20b/
Kepler-825 b
Kepler-825 b

  • Kepler-825 b is an exoplanet orbiting the star Kepler-825, located about 2633.7 light-years (807.5 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-825 has apparent magnitude of 13.1, with absolute magnitude of 3.5.
  • It is 1.0 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6222 with its spectral types of G1
  • In this planetary system, the extrasolar planet Kepler-825 b orbits around the star Kepler-825 every 3.8 days with its orbital distance of 0.05 AU ( 7166629.6 km)
  • (Projected orbit of Kepler-825 b around its host star Kepler-825)


  • The Star Kepler-825 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.887 AU ( 132740605.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.227 AU ( 183482205.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.869 AU ( 279586277.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.750 AU ( 411423454.6 km)
  • Radiation at Planetary Boundary of Kepler-825 b : 896431.44 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-825)



  • Kopparapu Recent Venus for Star Kepler-825 distance : 0.895 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-825 distance : 1.134 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-825 distance : 1.095 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-825 distance : 1.200 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-825 distance : 1.982 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-825 distance : 2.090 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-825)



  • Original Kopparapu Recent Venus for Star Kepler-825 distance : 0.905 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-825 distance : 1.163 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-825 distance : 1.197 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-825 distance : 2.017 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-825 distance : 2.098 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-825)



    (Position in Stellar Map of star Kepler-825 and its Exoplanet Kepler-825 b)



    (Zoomed position in Stellar Map of star Kepler-825 and its Exoplanet Kepler-825 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-825*)
    *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