Imaginary Picture of HD 140913 b

Display orbital revolution of HD 140913 b around the hoststar HD 140913
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Exoplanet Name : HD 140913 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 43.2000 (Mjup) 13734.9216 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5700 (AU) 0.5700 (AU Est.)
Eccentricity : 0.5400
Orbital Period(Yrs) 0.4051
Orbital Period(Observed/Estimated) 147.97 (Days Obs.) 149.87 (Days Est.)
Surface Gravity (G Earth) 132.6427
Star Radiation at Atmospheric Boundary: 4953.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 374.4 (K)
Blackbody T 0.3(K) 351.6 (K)
Blackbody T 0.7(K) 284.5 (K)
Tidally Locked Blackbody T 0.1(K) 445.3 (K)
Tidally Locked Blackbody T 0.3(K) 418.2 (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 140913
Alternate Name :
Star Distance(LY) : 157.6
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5983 (K)
Spectral type : G0V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.1
Absolute Magnitude: 4.6
Apparent Magnitude: 8.1
Right Ascension(RA) 236.2810
Declination (DEC) 28.4699
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 140913 b
HD 140913 b

  • HD 140913 b is an exoplanet orbiting the star HD 140913, located about 157.6 light-years (48.3 pc) away from Solar System. Its discovery was publicly announced on 1996.
  • The host star HD 140913 has apparent magnitude of 8.1, with absolute magnitude of 4.6.
  • It is 1.1 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5983 with its spectral types of G0V
  • In this planetary system, the extrasolar planet HD 140913 b orbits around the star HD 140913 every 148.0 days with its orbital distance of 0.57 AU ( 85270786.3 km)
  • (Projected orbit of HD 140913 b around its host star HD 140913)


  • The Star HD 140913 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.785 AU ( 117402306.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.085 AU ( 162280669.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.653 AU ( 247279826.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.432 AU ( 363883098.0 km)
  • Radiation at Planetary Boundary of HD 140913 b : 4953.27 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 140913)



  • Kopparapu Recent Venus for Star HD 140913 distance : 0.803 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 140913 distance : 1.017 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 140913 distance : 0.983 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 140913 distance : 1.077 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 140913 distance : 1.787 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 140913 distance : 1.885 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 140913)



  • Original Kopparapu Recent Venus for Star HD 140913 distance : 0.808 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 140913 distance : 1.045 AU
  • Original Kopparapu Moist Greenhouse for Star HD 140913 distance : 1.069 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 140913 distance : 1.819 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 140913 distance : 1.892 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 140913)



    (Position in Stellar Map of star HD 140913 and its Exoplanet HD 140913 b)



    (Zoomed position in Stellar Map of star HD 140913 and its Exoplanet HD 140913 b (zoom level 3))

    (Synthetic Spectrum of star HD 140913*)
    *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