Imaginary Picture of HD 176051 b

Display orbital revolution of HD 176051 b around the hoststar HD 176051
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Exoplanet Name : HD 176051 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 1.7600 (AU) 1.7600 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 2.7816
Orbital Period(Observed/Estimated) 1016.00 (Days Obs.) 898.96 (Days Est.)
Surface Gravity (G Earth) 4.6056
Star Radiation at Atmospheric Boundary: 33.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 107.2 (K)
Blackbody T 0.3(K) 100.7 (K)
Blackbody T 0.7(K) 81.5 (K)
Tidally Locked Blackbody T 0.1(K) 127.5 (K)
Tidally Locked Blackbody T 0.3(K) 119.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Astrometry
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 176051
Alternate Name :
Star Distance(LY) : 48.5
Stellar Radius(Rsun) : 0.8 (Rsun Estimated)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3300 (K)
Spectral type : M9
UV portion[%]: 0.2
Visible portion[%]: 11.2
IR portion[%]: 88.6
Metalicity : 0.0
Absolute Magnitude: 4.4
Apparent Magnitude: 5.2
Right Ascension(RA) 284.2567
Declination (DEC) 32.9014
Hubble Space Telescope Guide Star Catalog (GSC) ID
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+176051+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20176051%20b/
HD 176051 b
HD 176051 b

  • HD 176051 b is an exoplanet orbiting the star HD 176051, located about 48.5 light-years (14.9 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HD 176051 has apparent magnitude of 5.2, with absolute magnitude of 4.4.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 3300 with its spectral types of M9
  • In this planetary system, the extrasolar planet HD 176051 b orbits around the star HD 176051 every 1016.0 days with its orbital distance of 1.76 AU ( 263292252.4 km)
  • (Projected orbit of HD 176051 b around its host star HD 176051)


  • The Star HD 176051 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.199 AU ( 29734450.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.275 AU ( 41100780.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.419 AU ( 62628494.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.616 AU ( 92160572.9 km)
  • Radiation at Planetary Boundary of HD 176051 b : 33.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 176051)



  • Kopparapu Recent Venus for Star HD 176051 distance : 0.225 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 176051 distance : 0.285 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 176051 distance : 0.275 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 176051 distance : 0.303 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 176051 distance : 0.560 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 176051 distance : 0.591 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 176051)



  • Original Kopparapu Recent Venus for Star HD 176051 distance : 0.224 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 176051 distance : 0.295 AU
  • Original Kopparapu Moist Greenhouse for Star HD 176051 distance : 0.296 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 176051 distance : 0.569 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 176051 distance : 0.591 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 176051)



    (Position in Stellar Map of star HD 176051 and its Exoplanet HD 176051 b)



    (Zoomed position in Stellar Map of star HD 176051 and its Exoplanet HD 176051 b (zoom level 3))

    (Synthetic Spectrum of star HD 176051*)
    *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