Imaginary Picture of GJ 625 b
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Exoplanet Name : GJ 625 b
Alternate Name :
Radius (Rjup / Re): 0.1198 (Rjup) 1.3427 (Rearth)
Mass (Mjup / Me): 0.0095 (Mjup) 3.0204 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0784 (AU) 0.0784 (AU Est.)
Eccentricity : 0.1300
Orbital Period(Yrs) 0.0401
Orbital Period(Observed/Estimated) 14.64 (Days Obs.) 14.64 (Days Est.)
Star Radiation at Atmospheric Boundary: 2874.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 326.8 (K)
Blackbody T 0.3(K) 306.9 (K)
Blackbody T 0.7(K) 248.3 (K)
Tidally Locked Blackbody T 0.1(K) 388.6 (K)
Tidally Locked Blackbody T 0.3(K) 365.0 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : GJ 625
Alternate Name :
Star Distance(LY) : 21.2
Stellar Radius(Rsun) : 0.3 (Rsun Measured)
Stellar Mass(Msun) : 0.3 (Msun Measured) 0.3 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3499 (K)
Spectral type : M2
Metalicity : -0.4
Absolute Magnitude: 11.1
Apparent Magnitude: 10.2
Right Ascension(RA) 246.3542
Declination (DEC) 54.3033
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
GJ 625 b
GJ 625 b

  • GJ 625 b is an exoplanet orbiting the star GJ 625, located about 21.2 light-years ( 6.5 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star GJ 625 has apparent magnitude of 10.2, with absolute magnitude of 11.1.
  • It is 0.3 times more massive and 0.3 times bigger compared with our Sun. The surface temperature is 3499 with its spectral types of M2
  • In this planetary system, the extrasolar planet GJ 625 b orbits around the star GJ 625 every 14.6 days with its orbital distance of 0.08 AU ( 11728323.5 km)
  • (Projected orbit of GJ 625 b around its host star GJ 625)


  • The Star GJ 625 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.082 AU ( 12300073.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.114 AU ( 17001915.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.173 AU ( 25907156.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.255 AU ( 38123515.7 km)
  • Radiation at Planetary Boundary of GJ 625 b : 2873.97 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 625)



  • Kopparapu Recent Venus for Star GJ 625 distance : 0.093 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 625 distance : 0.118 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 625 distance : 0.114 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 625 distance : 0.125 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 625 distance : 0.229 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 625 distance : 0.241 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 625)



  • Original Kopparapu Recent Venus for Star GJ 625 distance : 0.092 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 625 distance : 0.122 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 625 distance : 0.122 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 625 distance : 0.232 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 625 distance : 0.242 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 625)



    (Position in Stellar Map of star GJ 625 and its Exoplanet GJ 625 b)



    (Zoomed position in Stellar Map of star GJ 625 and its Exoplanet GJ 625 b (zoom level 3))