Imaginary Picture of HD 133131 A c

Display orbital revolution of HD 133131 A c around the hoststar HD 133131 A
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Exoplanet Name : HD 133131 A c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.4800 (Mjup) 152.6102 (Mearth)
Semi Major Axis / Orbital Distance Calculated 4.3600 (AU) 4.3600 (AU Est.)
Eccentricity : 0.4700
Orbital Period(Yrs) 9.3276
Orbital Period(Observed/Estimated) 3407.00 (Days Obs.) 3411.60 (Days Est.)
Surface Gravity (G Earth) 1.4738
Star Radiation at Atmospheric Boundary: 61.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 125.2 (K)
Blackbody T 0.3(K) 117.6 (K)
Blackbody T 0.7(K) 95.1 (K)
Tidally Locked Blackbody T 0.1(K) 148.9 (K)
Tidally Locked Blackbody T 0.3(K) 139.8 (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 A
Alternate Name :
Star Distance(LY) : 153.3
Stellar Radius(Rsun) : 0.9 (Rsun Estimated)
Stellar Mass(Msun) : 0.9 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 9.7 (GY)
Temperature : 5799 (K)
Spectral type : G2V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.3
Absolute Magnitude: 5.0
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+A+&submit=SIMBAD+search
Open Exoplanet Database Link
HD 133131 A c
HD 133131 A c

  • HD 133131 A c is an exoplanet orbiting the star HD 133131 A, 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 A has apparent magnitude of 8.4, with absolute magnitude of 5.0.
  • It is 0.9 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5799 with its spectral types of G2V
  • In this planetary system, the extrasolar planet HD 133131 A c orbits around the star HD 133131 A every 3407.0 days with its orbital distance of 4.36 AU ( 652246716.3 km)
  • (Projected orbit of HD 133131 A c around its host star HD 133131 A)


  • The Star HD 133131 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.671 AU ( 100402300.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.928 AU ( 138782217.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.414 AU ( 211473387.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.080 AU ( 311192354.1 km)
  • Radiation at Planetary Boundary of HD 133131 A c : 61.92 W/m2

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



  • Kopparapu Recent Venus for Star HD 133131 A distance : 0.695 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 133131 A distance : 0.880 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 133131 A distance : 0.850 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 133131 A distance : 0.932 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 133131 A distance : 1.553 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 133131 A distance : 1.638 AU

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



  • Original Kopparapu Recent Venus for Star HD 133131 A distance : 0.696 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 133131 A distance : 0.904 AU
  • Original Kopparapu Moist Greenhouse for Star HD 133131 A distance : 0.921 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 133131 A distance : 1.580 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 133131 A distance : 1.643 AU

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



    (Position in Stellar Map of star HD 133131 A and its Exoplanet HD 133131 A c)



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

    (Synthetic Spectrum of star HD 133131 A*)
    *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