Imaginary Picture of GJ 180 b
/
Exoplanet Name : GJ 180 b
Alternate Name :
Radius (Rjup / Re): 0.1550 (Rjup) 1.7378 (Rearth)
Mass (Mjup / Me): 0.0261 (Mjup) 8.3028 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1030 (AU) 0.1030 (AU Est.)
Eccentricity : 0.1100
Orbital Period(Yrs) 0.0476
Orbital Period(Observed/Estimated) 17.38 (Days Obs.) 18.41 (Days Est.)
Star Radiation at Atmospheric Boundary: 2628.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 319.6 (K)
Blackbody T 0.3(K) 300.1 (K)
Blackbody T 0.7(K) 242.8 (K)
Tidally Locked Blackbody T 0.1(K) 380.0 (K)
Tidally Locked Blackbody T 0.3(K) 356.9 (K)
Size Class: super-Earth-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 180
Alternate Name :
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 0.4 (Rsun Estimated)
Stellar Mass(Msun) : 0.4 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3371 (K)
Spectral type : M2V
Metalicity : 0.0
Absolute Magnitude: 25.0
Apparent Magnitude: 10.9
Right Ascension(RA) 73.4582
Declination (DEC) -17.7734
Hubble Space Telescope Guide Star Catalog (GSC) ID 0
Discovered by
Discovery Paper - Authors "Allard,rance; Hauschildt,eter.; Baraffe,sabelle; Chabrier,illes"
Discovery Paper - Title Synthetic Spectra and Mass Determination of the Brown Dwarf GI 229B
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+180+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/GJ%20180%20b/
GJ 180 b
GJ 180 b

  • GJ 180 b is an exoplanet orbiting the star GJ 180. Its discovery was publicly announced on 2014.
  • The host star GJ 180 has apparent magnitude of 10.9, with absolute magnitude of 25.0.
  • It is 0.4 times more massive and 0.4 times bigger compared with our Sun. The surface temperature is 3371 with its spectral types of M2V
  • In this planetary system, the extrasolar planet GJ 180 b orbits around the star GJ 180 every 17.4 days with its orbital distance of 0.10 AU ( 15408580.7 km)
  • (Projected orbit of GJ 180 b around its host star GJ 180)


  • The Star GJ 180 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.103 AU ( 15454779.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.143 AU ( 21362544.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.218 AU ( 32551789.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.320 AU ( 47901384.4 km)
  • Radiation at Planetary Boundary of GJ 180 b : 2628.69 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 180)



  • Kopparapu Recent Venus for Star GJ 180 distance : 0.117 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 180 distance : 0.148 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 180 distance : 0.143 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 180 distance : 0.157 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 180 distance : 0.290 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 180 distance : 0.306 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 180)



  • Original Kopparapu Recent Venus for Star GJ 180 distance : 0.116 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 180 distance : 0.153 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 180 distance : 0.154 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 180 distance : 0.294 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 180 distance : 0.306 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 180)



    (Position in Stellar Map of star GJ 180 and its Exoplanet GJ 180 b)



    (Zoomed position in Stellar Map of star GJ 180 and its Exoplanet GJ 180 b (zoom level 3))