Imaginary Picture of GJ 2056 b

Display orbital revolution of GJ 2056 b around the hoststar GJ 2056
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Exoplanet Name : GJ 2056 b
Alternate Name :
Radius (Rjup / Re): 0.2197 (Rjup) 2.4624 (Rearth)
Mass (Mjup / Me): 0.0510 (Mjup) 16.2148 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2830 (AU) 0.2830 (AU Est.)
Eccentricity : 0.7200
Orbital Period(Yrs) 0.1916
Orbital Period(Observed/Estimated) 69.97 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 1365.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 271.3 (K)
Blackbody T 0.3(K) 254.8 (K)
Blackbody T 0.7(K) 206.1 (K)
Tidally Locked Blackbody T 0.1(K) 322.6 (K)
Tidally Locked Blackbody T 0.3(K) 303.0 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : GJ 2056
Alternate Name :
Star Distance(LY) : 92.8
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3750 (K)
Spectral type : M0
Metalicity : 0.0
Absolute Magnitude: 8.1
Apparent Magnitude: 10.4
Right Ascension(RA) 108.0200
Declination (DEC) -24.8919
Hubble Space Telescope Guide Star Catalog (GSC) ID 06528-00972
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+2056+&submit=SIMBAD+search
Open Exoplanet Database Link
GJ 2056 b
GJ 2056 b

  • GJ 2056 b is an exoplanet orbiting the star GJ 2056, located about 92.8 light-years (28.5 pc) away from Solar System. Its discovery was publicly announced on 2020.
  • The host star GJ 2056 has apparent magnitude of 10.4, with absolute magnitude of 8.1.
  • In this planetary system, the extrasolar planet GJ 2056 b orbits around the star GJ 2056 every 70.0 days with its orbital distance of 0.28 AU ( 42336197.4 km)
  • (Projected orbit of GJ 2056 b around its host star GJ 2056)


  • The Star GJ 2056 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.205 AU ( 30602589.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.283 AU ( 42300776.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.431 AU ( 64457022.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.634 AU ( 94851331.9 km)
  • Radiation at Planetary Boundary of GJ 2056 b : 1365.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 2056)



  • Kopparapu Recent Venus for Star GJ 2056 distance : 0.230 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 2056 distance : 0.291 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 2056 distance : 0.281 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 2056 distance : 0.310 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 2056 distance : 0.560 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 2056 distance : 0.591 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 2056)



  • Original Kopparapu Recent Venus for Star GJ 2056 distance : 0.228 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 2056 distance : 0.302 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 2056 distance : 0.302 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 2056 distance : 0.569 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 2056 distance : 0.592 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 2056)



    (Position in Stellar Map of star GJ 2056 and its Exoplanet GJ 2056 b)



    (Zoomed position in Stellar Map of star GJ 2056 and its Exoplanet GJ 2056 b (zoom level 3))