Imaginary Picture of HD 72659 c

Display orbital revolution of HD 72659 c around the hoststar HD 72659
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Exoplanet Name : HD 72659 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 18.8060 (Mjup) 5979.1420 (Mearth)
Semi Major Axis / Orbital Distance Calculated 13.9590 (AU) 13.9590 (AU Est.)
Eccentricity : 0.0910
Orbital Period(Yrs) 49.8486
Orbital Period(Observed/Estimated) 18207.70 (Days Obs.) 18245.61 (Days Est.)
Surface Gravity (G Earth) 57.7426
Star Radiation at Atmospheric Boundary: 16.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 90.0 (K)
Blackbody T 0.3(K) 84.5 (K)
Blackbody T 0.7(K) 68.4 (K)
Tidally Locked Blackbody T 0.1(K) 107.0 (K)
Tidally Locked Blackbody T 0.3(K) 100.5 (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 72659
Alternate Name :
Star Distance(LY) : 162.4
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 6.5 (GY)
Temperature : 5943 (K)
Spectral type : G0IV-V
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 4.0
Apparent Magnitude: 7.5
Right Ascension(RA) 128.5125
Declination (DEC) -1.5681
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 72659 c
HD 72659 c

  • HD 72659 c is an exoplanet orbiting the star HD 72659, located about 162.4 light-years (49.8 pc) away from Solar System. Its discovery was publicly announced on 2022.
  • The host star HD 72659 has apparent magnitude of 7.5, with absolute magnitude of 4.0.
  • It is 1.1 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5943 with its spectral types of G0IV-V
  • In this planetary system, the extrasolar planet HD 72659 c orbits around the star HD 72659 every 18207.7 days with its orbital distance of 13.96 AU ( 2088236677.1 km)
  • (Projected orbit of HD 72659 c around its host star HD 72659)


  • The Star HD 72659 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.110 AU ( 166053175.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.534 AU ( 229528882.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.338 AU ( 349751222.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.440 AU ( 514674245.9 km)
  • Radiation at Planetary Boundary of HD 72659 c : 16.52 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 72659)



  • Kopparapu Recent Venus for Star HD 72659 distance : 1.139 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 72659 distance : 1.442 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 72659 distance : 1.393 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 72659 distance : 1.527 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 72659 distance : 2.537 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 72659 distance : 2.675 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 72659)



  • Original Kopparapu Recent Venus for Star HD 72659 distance : 1.144 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 72659 distance : 1.481 AU
  • Original Kopparapu Moist Greenhouse for Star HD 72659 distance : 1.514 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 72659 distance : 2.582 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 72659 distance : 2.685 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 72659)



    (Position in Stellar Map of star HD 72659 and its Exoplanet HD 72659 c)



    (Zoomed position in Stellar Map of star HD 72659 and its Exoplanet HD 72659 c (zoom level 3))

    (Synthetic Spectrum of star HD 72659*)
    *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