Imaginary Picture of HD 80913 b

Display orbital revolution of HD 80913 b around the hoststar HD 80913
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Exoplanet Name : HD 80913 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 23.6140 (Mjup) 7507.7879 (Mearth)
Semi Major Axis / Orbital Distance Calculated 9.9500 (AU) 9.9500 (AU Est.)
Eccentricity : 0.3130
Orbital Period(Yrs) 29.6769
Orbital Period(Observed/Estimated) 10839.80 (Days Obs.) 10880.86 (Days Est.)
Surface Gravity (G Earth) 72.5052
Star Radiation at Atmospheric Boundary: 44.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 115.2 (K)
Blackbody T 0.3(K) 108.1 (K)
Blackbody T 0.7(K) 87.5 (K)
Tidally Locked Blackbody T 0.1(K) 136.9 (K)
Tidally Locked Blackbody T 0.3(K) 128.6 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : "Radial Velocity, Astrometry"
Mass Detection : Astrometry
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 80913
Alternate Name :
Star Distance(LY) : 200.1
Stellar Radius(Rsun) : 1.7 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6013 (K)
Spectral type : G0IV
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : -0.7
Absolute Magnitude: 3.6
Apparent Magnitude: 7.5
Right Ascension(RA) 138.1045
Declination (DEC) -81.7686
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
HD 80913 b
HD 80913 b

  • HD 80913 b is an exoplanet orbiting the star HD 80913, located about 200.1 light-years (61.4 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HD 80913 has apparent magnitude of 7.5, with absolute magnitude of 3.6.
  • It is 1.1 times more massive and 1.7 times bigger compared with our Sun. The surface temperature is 6013 with its spectral types of G0IV
  • In this planetary system, the extrasolar planet HD 80913 b orbits around the star HD 80913 every 10839.8 days with its orbital distance of 9.95 AU ( 1488498813.5 km)
  • (Projected orbit of HD 80913 b around its host star HD 80913)


  • The Star HD 80913 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.296 AU ( 193833365.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.791 AU ( 267928366.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.729 AU ( 408263537.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 4.016 AU ( 600777680.1 km)
  • Radiation at Planetary Boundary of HD 80913 b : 44.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 80913)



  • Kopparapu Recent Venus for Star HD 80913 distance : 1.324 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 80913 distance : 1.677 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 80913 distance : 1.619 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 80913 distance : 1.775 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 80913 distance : 2.944 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 80913 distance : 3.105 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 80913)



  • Original Kopparapu Recent Venus for Star HD 80913 distance : 1.332 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 80913 distance : 1.721 AU
  • Original Kopparapu Moist Greenhouse for Star HD 80913 distance : 1.763 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 80913 distance : 2.996 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 80913 distance : 3.116 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 80913)



    (Position in Stellar Map of star HD 80913 and its Exoplanet HD 80913 b)



    (Zoomed position in Stellar Map of star HD 80913 and its Exoplanet HD 80913 b (zoom level 3))

    (Synthetic Spectrum of star HD 80913*)
    *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