Imaginary Picture of 11 Oph b
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Exoplanet Name : 11 Oph b
Alternate Name : Oph 1622-2405 b
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 21.0000 (Mjup) 6676.6980 (Mearth)
Semi Major Axis / Orbital Distance Calculated 243.0000 (AU) 243.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 1998.5764
Orbital Period(Observed/Estimated) 730000.00 (Days Obs.) 10870314.96 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.9 (K)
Blackbody T 0.3(K) 0.9 (K)
Blackbody T 0.7(K) 0.7 (K)
Tidally Locked Blackbody T 0.1(K) 1.1 (K)
Tidally Locked Blackbody T 0.3(K) 1.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Imaging
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : 11 Oph
Alternate Name : "Oph 11A, Oph 1622-2405"
Star Distance(LY) : 472.9
Stellar Radius(Rsun) : 0.0 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 3.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 2375 (K)
Spectral type : M9
Metalicity : 0.0
Absolute Magnitude: 8.2
Apparent Magnitude: 14.0
Right Ascension(RA) 245.6042
Declination (DEC) -24.0872
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
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SIMBAD LINK
Open Exoplanet Database Link
11 Oph b
11 Oph b

  • 11 Oph b is an exoplanet orbiting the star 11 Oph, located about 472.9 light-years (145.0 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star 11 Oph has apparent magnitude of 14.0, with absolute magnitude of 8.2.
  • It is 0.0 times more massive and 0.0 times bigger compared with our Sun. The surface temperature is 2375 with its spectral types of M9
  • In this planetary system, the extrasolar planet 11 Oph b orbits around the star 11 Oph every 730000.0 days with its orbital distance of 243.00 AU ( 36352282580.1 km)
  • (Projected orbit of 11 Oph b around its host star 11 Oph)


  • The Star 11 Oph 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.002 AU ( 296142.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.003 AU ( 409346.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.004 AU ( 623752.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.006 AU ( 917879.4 km)
  • Radiation at Planetary Boundary of 11 Oph b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star 11 Oph)



  • Kopparapu Recent Venus for Star 11 Oph distance : 0.002 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star 11 Oph distance : 0.003 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star 11 Oph distance : 0.003 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star 11 Oph distance : 0.003 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star 11 Oph distance : 0.006 AU
  • Kopparapu Outer Boundary for Early Mars for Star 11 Oph distance : 0.006 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star 11 Oph)



  • Original Kopparapu Recent Venus for Star 11 Oph distance : 0.002 AU
  • Original Kopparapu Runaway Greenhouse for Star 11 Oph distance : 0.003 AU
  • Original Kopparapu Moist Greenhouse for Star 11 Oph distance : 0.003 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star 11 Oph distance : 0.006 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star 11 Oph distance : 0.006 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star 11 Oph)



    (Position in Stellar Map of star 11 Oph and its Exoplanet 11 Oph b)



    (Zoomed position in Stellar Map of star 11 Oph and its Exoplanet 11 Oph b (zoom level 3))