Imaginary Picture of GJ 86 b

Display orbital revolution of GJ 86 b around the hoststar GJ 86
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Exoplanet Name : GJ 86 b
Alternate Name : "GJ 86 A b,HD 13445b"
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 4.0100 (Mjup) 1274.9314 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1100 (AU) 0.1100 (AU Est.)
Eccentricity : 0.0460
Orbital Period(Yrs) 0.0432
Orbital Period(Observed/Estimated) 15.77 (Days Obs.) 14.90 (Days Est.)
Surface Gravity (G Earth) 12.3124
Star Radiation at Atmospheric Boundary: 60696.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 700.5 (K)
Blackbody T 0.3(K) 657.9 (K)
Blackbody T 0.7(K) 532.3 (K)
Tidally Locked Blackbody T 0.1(K) 833.1 (K)
Tidally Locked Blackbody T 0.3(K) 782.4 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : GJ 86
Alternate Name :
Star Distance(LY) : 35.2
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 2.0 (GY)
Temperature : 5350 (K)
Spectral type : K1V
UV portion[%]: 6.1
Visible portion[%]: 42.0
IR portion[%]: 51.9
Metalicity : -0.2
Absolute Magnitude: 6.0
Apparent Magnitude: 6.2
Right Ascension(RA) 32.6081
Declination (DEC) -50.8237
Hubble Space Telescope Guide Star Catalog (GSC) ID 08048-01022
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+86+&submit=SIMBAD+search
Open Exoplanet Database Link
GJ 86 b
GJ 86 b

  • GJ 86 b is an exoplanet orbiting the star GJ 86, located about 35.2 light-years (10.8 pc) away from Solar System. Its discovery was publicly announced on 2000.
  • The host star GJ 86 has apparent magnitude of 6.2, with absolute magnitude of 6.0.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5350 with its spectral types of K1V
  • In this planetary system, the extrasolar planet GJ 86 b orbits around the star GJ 86 every 15.8 days with its orbital distance of 0.11 AU ( 16455765.8 km)
  • (Projected orbit of GJ 86 b around its host star GJ 86)


  • The Star GJ 86 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.530 AU ( 79310701.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.733 AU ( 109628115.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.117 AU ( 167048987.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.643 AU ( 245819903.6 km)
  • Radiation at Planetary Boundary of GJ 86 b : 60696.94 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 86)



  • Kopparapu Recent Venus for Star GJ 86 distance : 0.563 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 86 distance : 0.713 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 86 distance : 0.689 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 86 distance : 0.756 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 86 distance : 1.276 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 86 distance : 1.346 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 86)



  • Original Kopparapu Recent Venus for Star GJ 86 distance : 0.560 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 86 distance : 0.734 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 86 distance : 0.741 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 86 distance : 1.298 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 86 distance : 1.350 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 86)



    (Position in Stellar Map of star GJ 86 and its Exoplanet GJ 86 b)



    (Zoomed position in Stellar Map of star GJ 86 and its Exoplanet GJ 86 b (zoom level 3))

    (Synthetic Spectrum of star GJ 86*)
    *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