Imaginary Picture of HD 152581 b

Display orbital revolution of HD 152581 b around the hoststar HD 152581
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Exoplanet Name : HD 152581 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.5000 (Mjup) 476.9070 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.4800 (AU) 1.4800 (AU Est.)
Eccentricity : 0.2200
Orbital Period(Yrs) 1.8863
Orbital Period(Observed/Estimated) 689.00 (Days Obs.) 683.03 (Days Est.)
Surface Gravity (G Earth) 4.6056
Star Radiation at Atmospheric Boundary: 9109.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 436.0 (K)
Blackbody T 0.3(K) 409.5 (K)
Blackbody T 0.7(K) 331.3 (K)
Tidally Locked Blackbody T 0.1(K) 518.5 (K)
Tidally Locked Blackbody T 0.3(K) 486.9 (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 : HD 152581
Alternate Name :
Star Distance(LY) : 547.2
Stellar Radius(Rsun) : 4.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 12.0 (GY)
Temperature : 5155 (K)
Spectral type : K0
UV portion[%]: 4.4
Visible portion[%]: 39.5
IR portion[%]: 56.1
Metalicity : -0.5
Absolute Magnitude: 2.4
Apparent Magnitude: 8.5
Right Ascension(RA) 253.4316
Declination (DEC) 11.9736
Hubble Space Telescope Guide Star Catalog (GSC) ID 00983-00872
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+152581+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20152581%20b/
HD 152581 b
HD 152581 b

  • HD 152581 b is an exoplanet orbiting the star HD 152581, located about 547.2 light-years (167.8 pc) away from Solar System. Its discovery was publicly announced on 2011.
  • The host star HD 152581 has apparent magnitude of 8.5, with absolute magnitude of 2.4.
  • It is 0.9 times more massive and 4.8 times bigger compared with our Sun. The surface temperature is 5155 with its spectral types of K0
  • In this planetary system, the extrasolar planet HD 152581 b orbits around the star HD 152581 every 689.0 days with its orbital distance of 1.48 AU ( 221404848.6 km)
  • (Projected orbit of HD 152581 b around its host star HD 152581)


  • The Star HD 152581 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.763 AU ( 413386880.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.820 AU ( 571408699.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 5.820 AU ( 870700405.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 8.565 AU ( 1281273789.1 km)
  • Radiation at Planetary Boundary of HD 152581 b : 9109.16 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 152581)



  • Kopparapu Recent Venus for Star HD 152581 distance : 2.966 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 152581 distance : 3.756 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 152581 distance : 3.628 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 152581 distance : 3.980 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 152581 distance : 6.767 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 152581 distance : 7.138 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 152581)



  • Original Kopparapu Recent Venus for Star HD 152581 distance : 2.940 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 152581 distance : 3.868 AU
  • Original Kopparapu Moist Greenhouse for Star HD 152581 distance : 3.890 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 152581 distance : 6.882 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 152581 distance : 7.156 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 152581)



    (Position in Stellar Map of star HD 152581 and its Exoplanet HD 152581 b)



    (Zoomed position in Stellar Map of star HD 152581 and its Exoplanet HD 152581 b (zoom level 3))

    (Synthetic Spectrum of star HD 152581*)
    *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