Imaginary Picture of HD 133131 B b
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Exoplanet Name : HD 133131 B b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.5000 (Mjup) 794.8450 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 6.3908 (AU Est.)
Eccentricity : 0.6200
Orbital Period(Yrs) 16.7525
Orbital Period(Observed/Estimated) 6119.00 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 27.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 101.7 (K)
Blackbody T 0.3(K) 95.5 (K)
Blackbody T 0.7(K) 77.3 (K)
Tidally Locked Blackbody T 0.1(K) 121.0 (K)
Tidally Locked Blackbody T 0.3(K) 113.6 (K)
Size Class: Jupiter-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 : HD 133131 B
Alternate Name :
Star Distance(LY) : 153.3
Stellar Radius(Rsun) : 0.9 (Rsun Estimated)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 9.7 (GY)
Temperature : 5805 (K)
Spectral type : G2
Metalicity : -0.3
Absolute Magnitude: 5.1
Apparent Magnitude: 8.4
Right Ascension(RA) 225.8992
Declination (DEC) -27.8410
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+133131+B&submit=SIMBAD+search
Open Exoplanet Database Link
HD 133131 B b
HD 133131 B b

  • HD 133131 B b is an exoplanet orbiting the star HD 133131 B, located about 153.3 light-years (47.0 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HD 133131 B has apparent magnitude of 8.4, with absolute magnitude of 5.1.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5805 with its spectral types of G2
  • In this planetary system, the extrasolar planet HD 133131 B b orbits around the star HD 133131 B every 6119.0 days with its orbital distance of 6.39 AU ( 956048403.5 km)
  • (Projected orbit of HD 133131 B b around its host star HD 133131 B)


  • The Star HD 133131 B 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.650 AU ( 97170226.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.898 AU ( 134314647.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.368 AU ( 204665798.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.013 AU ( 301174687.9 km)
  • Radiation at Planetary Boundary of HD 133131 B b : 26.99 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 133131 B)



  • Kopparapu Recent Venus for Star HD 133131 B distance : 0.672 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 133131 B distance : 0.851 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 133131 B distance : 0.822 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 133131 B distance : 0.901 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 133131 B distance : 1.502 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 133131 B distance : 1.584 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 133131 B)



  • Original Kopparapu Recent Venus for Star HD 133131 B distance : 0.673 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 133131 B distance : 0.875 AU
  • Original Kopparapu Moist Greenhouse for Star HD 133131 B distance : 0.891 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 133131 B distance : 1.528 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 133131 B distance : 1.589 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 133131 B)



    (Position in Stellar Map of star HD 133131 B and its Exoplanet HD 133131 B b)



    (Zoomed position in Stellar Map of star HD 133131 B and its Exoplanet HD 133131 B b (zoom level 3))