Imaginary Picture of HD 173416 b

Display orbital revolution of HD 173416 b around the hoststar HD 173416
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Exoplanet Name : HD 173416 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.7000 (Mjup) 858.4326 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.1600 (AU) 1.1600 (AU Est.)
Eccentricity : 0.2100
Orbital Period(Yrs) 0.8859
Orbital Period(Observed/Estimated) 323.60 (Days Obs.) 322.67 (Days Est.)
Surface Gravity (G Earth) 8.2902
Star Radiation at Atmospheric Boundary: 79882.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 750.3 (K)
Blackbody T 0.3(K) 704.6 (K)
Blackbody T 0.7(K) 570.1 (K)
Tidally Locked Blackbody T 0.1(K) 892.3 (K)
Tidally Locked Blackbody T 0.3(K) 838.0 (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 173416
Alternate Name :
Star Distance(LY) : 454.9
Stellar Radius(Rsun) : 13.5 (Rsun Measured)
Stellar Mass(Msun) : 2.0 (Msun Measured) 2.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4683 (K)
Spectral type : G8
UV portion[%]: 2.1
Visible portion[%]: 33.9
IR portion[%]: 63.9
Metalicity : 0.0
Absolute Magnitude: 0.3
Apparent Magnitude: 6.1
Right Ascension(RA) 280.9005
Declination (DEC) 36.5567
Hubble Space Telescope Guide Star Catalog (GSC) ID 02649-01153
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+173416+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20173416%20b/
HD 173416 b
HD 173416 b

  • HD 173416 b is an exoplanet orbiting the star HD 173416, located about 454.9 light-years (139.5 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star HD 173416 has apparent magnitude of 6.1, with absolute magnitude of 0.3.
  • It is 2.0 times more massive and 13.5 times bigger compared with our Sun. The surface temperature is 4683 with its spectral types of G8
  • In this planetary system, the extrasolar planet HD 173416 b orbits around the star HD 173416 every 323.6 days with its orbital distance of 1.16 AU ( 173533530.0 km)
  • (Projected orbit of HD 173416 b around its host star HD 173416)


  • The Star HD 173416 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 6.414 AU ( 959489433.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 8.866 AU ( 1326265142.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 13.509 AU ( 2020934574.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 19.879 AU ( 2973893758.2 km)
  • Radiation at Planetary Boundary of HD 173416 b : 79882.75 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 173416)



  • Kopparapu Recent Venus for Star HD 173416 distance : 7.036 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 173416 distance : 8.907 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 173416 distance : 8.603 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 173416 distance : 9.446 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 173416 distance : 16.361 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 173416 distance : 17.259 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 173416)



  • Original Kopparapu Recent Venus for Star HD 173416 distance : 6.946 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 173416 distance : 9.189 AU
  • Original Kopparapu Moist Greenhouse for Star HD 173416 distance : 9.190 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 173416 distance : 16.631 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 173416 distance : 17.295 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 173416)



    (Position in Stellar Map of star HD 173416 and its Exoplanet HD 173416 b)



    (Zoomed position in Stellar Map of star HD 173416 and its Exoplanet HD 173416 b (zoom level 3))

    (Synthetic Spectrum of star HD 173416*)
    *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