Imaginary Picture of HD 147873 b

Display orbital revolution of HD 147873 b around the hoststar HD 147873
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Exoplanet Name : HD 147873 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 5.1400 (Mjup) 1634.2013 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5220 (AU) 0.5220 (AU Est.)
Eccentricity : 0.2070
Orbital Period(Yrs) 0.3192
Orbital Period(Observed/Estimated) 116.60 (Days Obs.) 117.26 (Days Est.)
Surface Gravity (G Earth) 15.7820
Star Radiation at Atmospheric Boundary: 30020.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 587.5 (K)
Blackbody T 0.3(K) 551.7 (K)
Blackbody T 0.7(K) 446.4 (K)
Tidally Locked Blackbody T 0.1(K) 698.6 (K)
Tidally Locked Blackbody T 0.3(K) 656.1 (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 147873
Alternate Name :
Star Distance(LY) : 342.2
Stellar Radius(Rsun) : 2.3 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.4 (Msun Estimated)
Star Age : 4.0 (GY)
Temperature : 5972 (K)
Spectral type : G1V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.0
Absolute Magnitude: 2.9
Apparent Magnitude: 8.0
Right Ascension(RA) 246.4381
Declination (DEC) -33.4536
Hubble Space Telescope Guide Star Catalog (GSC) ID 07348-00746
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+147873+&submit=SIMBAD+search
Open Exoplanet Database Link 0
HD 147873 b
HD 147873 b

  • HD 147873 b is an exoplanet orbiting the star HD 147873, located about 342.2 light-years (104.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star HD 147873 has apparent magnitude of 8.0, with absolute magnitude of 2.9.
  • It is 1.4 times more massive and 2.3 times bigger compared with our Sun. The surface temperature is 5972 with its spectral types of G1V
  • In this planetary system, the extrasolar planet HD 147873 b orbits around the star HD 147873 every 116.6 days with its orbital distance of 0.52 AU ( 78090088.5 km)
  • (Projected orbit of HD 147873 b around its host star HD 147873)


  • The Star HD 147873 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.769 AU ( 264687354.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.446 AU ( 365867094.7 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.727 AU ( 557500486.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.484 AU ( 820386387.8 km)
  • Radiation at Planetary Boundary of HD 147873 b : 30020.23 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 147873)



  • Kopparapu Recent Venus for Star HD 147873 distance : 1.812 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 147873 distance : 2.295 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 147873 distance : 2.217 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 147873 distance : 2.430 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 147873 distance : 4.033 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 147873 distance : 4.254 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 147873)



  • Original Kopparapu Recent Venus for Star HD 147873 distance : 1.822 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 147873 distance : 2.357 AU
  • Original Kopparapu Moist Greenhouse for Star HD 147873 distance : 2.411 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 147873 distance : 4.105 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 147873 distance : 4.269 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 147873)



    (Position in Stellar Map of star HD 147873 and its Exoplanet HD 147873 b)



    (Zoomed position in Stellar Map of star HD 147873 and its Exoplanet HD 147873 b (zoom level 3))

    (Synthetic Spectrum of star HD 147873*)
    *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