Imaginary Picture of Kepler-1725 b

Display orbital revolution of Kepler-1725 b around the hoststar Kepler-1725
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Exoplanet Name : Kepler-1725 b
Alternate Name : "KOI-635 b, KOI-635.01"
Status : Confirmed
Radius (Rjup / Re): 0.2509 (Rjup) 2.8120 (Rearth)
Mass (Mjup / Me): 0.0217 (Mjup) 6.9008 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1301 (AU) 0.1301 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0458
Orbital Period(Observed/Estimated) 16.72 (Days Obs.) 15.85 (Days Est.)
Surface Gravity (G Earth) 0.8727
Star Radiation at Atmospheric Boundary: 127000.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 842.5 (K)
Blackbody T 0.3(K) 791.2 (K)
Blackbody T 0.7(K) 640.2 (K)
Tidally Locked Blackbody T 0.1(K) 1002.0 (K)
Tidally Locked Blackbody T 0.3(K) 940.9 (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-1725
Alternate Name : "5020319, KOI-635, 2MASS J19372964+4011406"
Star Distance(LY) : 1822.1
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.9 (GY)
Temperature : 6161 (K)
Spectral type : F8V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 4.1
Apparent Magnitude: 12.9
Right Ascension(RA) 294.3735
Declination (DEC) 40.1946
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-1725 b
Kepler-1725 b

  • Kepler-1725 b is an exoplanet orbiting the star Kepler-1725, located about 1822.1 light-years (558.7 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star Kepler-1725 has apparent magnitude of 12.9, with absolute magnitude of 4.1.
  • It is 1.2 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 6161 with its spectral types of F8V
  • In this planetary system, the extrasolar planet Kepler-1725 b orbits around the star Kepler-1725 every 16.7 days with its orbital distance of 0.13 AU ( 19462683.0 km)
  • (Projected orbit of Kepler-1725 b around its host star Kepler-1725)


  • The Star Kepler-1725 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.907 AU ( 135686313.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.254 AU ( 187553944.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.910 AU ( 285790705.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.811 AU ( 420553542.3 km)
  • Radiation at Planetary Boundary of Kepler-1725 b : 127000.69 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1725)



  • Kopparapu Recent Venus for Star Kepler-1725 distance : 0.918 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1725 distance : 1.163 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1725 distance : 1.123 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1725 distance : 1.231 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1725 distance : 2.036 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1725 distance : 2.147 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1725)



  • Original Kopparapu Recent Venus for Star Kepler-1725 distance : 0.927 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1725 distance : 1.194 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1725 distance : 1.227 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1725 distance : 2.072 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1725 distance : 2.155 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1725)



    (Position in Stellar Map of star Kepler-1725 and its Exoplanet Kepler-1725 b)



    (Zoomed position in Stellar Map of star Kepler-1725 and its Exoplanet Kepler-1725 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1725*)
    *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