Imaginary Picture of HD 181342 b

Display orbital revolution of HD 181342 b around the hoststar HD 181342
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Exoplanet Name : HD 181342 b
Alternate Name : HIP 95124 b
Status : Confirmed
Radius (Rjup / Re): 1.1900 (Rjup) 13.3387 (Rearth)
Mass (Mjup / Me): 2.5400 (Mjup) 807.5625 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.5920 (AU) 1.5920 (AU Est.)
Eccentricity : 0.0220
Orbital Period(Yrs) 1.5444
Orbital Period(Observed/Estimated) 564.10 (Days Obs.) 564.37 (Days Est.)
Surface Gravity (G Earth) 4.5389
Star Radiation at Atmospheric Boundary: 6418.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 399.5 (K)
Blackbody T 0.3(K) 375.2 (K)
Blackbody T 0.7(K) 303.5 (K)
Tidally Locked Blackbody T 0.1(K) 475.1 (K)
Tidally Locked Blackbody T 0.3(K) 446.1 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection : Theoretical
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 181342
Alternate Name :
Star Distance(LY) : 360.8
Stellar Radius(Rsun) : 4.7 (Rsun Measured)
Stellar Mass(Msun) : 1.7 (Msun Measured) 1.7 (Msun Estimated)
Star Age : 1.8 (GY)
Temperature : 4945 (K)
Spectral type : K0III
UV portion[%]: 3.0
Visible portion[%]: 36.5
IR portion[%]: 60.5
Metalicity : 0.3
Absolute Magnitude: 2.3
Apparent Magnitude: 7.5
Right Ascension(RA) 290.2676
Declination (DEC) -23.6194
Hubble Space Telescope Guide Star Catalog (GSC) ID 06875-00192
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+181342+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20181342%20b/
HD 181342 b
HD 181342 b

  • HD 181342 b is an exoplanet orbiting the star HD 181342, located about 360.8 light-years (110.6 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HD 181342 has apparent magnitude of 7.5, with absolute magnitude of 2.3.
  • It is 1.7 times more massive and 4.7 times bigger compared with our Sun. The surface temperature is 4945 with its spectral types of K0III
  • In this planetary system, the extrasolar planet HD 181342 b orbits around the star HD 181342 every 564.1 days with its orbital distance of 1.59 AU ( 238159810.2 km)
  • (Projected orbit of HD 181342 b around its host star HD 181342)


  • The Star HD 181342 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 2.495 AU ( 373260137.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 3.449 AU ( 515943054.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 5.255 AU ( 786183036.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 7.733 AU ( 1156902779.0 km)
  • Radiation at Planetary Boundary of HD 181342 b : 6418.38 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 181342)



  • Kopparapu Recent Venus for Star HD 181342 distance : 2.706 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 181342 distance : 3.426 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 181342 distance : 3.309 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 181342 distance : 3.632 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 181342 distance : 6.224 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 181342 distance : 6.565 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 181342)



  • Original Kopparapu Recent Venus for Star HD 181342 distance : 2.676 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 181342 distance : 3.531 AU
  • Original Kopparapu Moist Greenhouse for Star HD 181342 distance : 3.541 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 181342 distance : 6.328 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 181342 distance : 6.581 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 181342)



    (Position in Stellar Map of star HD 181342 and its Exoplanet HD 181342 b)



    (Zoomed position in Stellar Map of star HD 181342 and its Exoplanet HD 181342 b (zoom level 3))

    (Synthetic Spectrum of star HD 181342*)
    *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