Imaginary Picture of HD 73526 c

Display orbital revolution of HD 73526 c around the hoststar HD 73526
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Exoplanet Name : HD 73526 c
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.2500 (Mjup) 715.3605 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.0300 (AU) 1.0300 (AU Est.)
Eccentricity : 0.2800
Orbital Period(Yrs) 1.0379
Orbital Period(Observed/Estimated) 379.10 (Days Obs.) 367.40 (Days Est.)
Surface Gravity (G Earth) 6.9085
Star Radiation at Atmospheric Boundary: 2505.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 315.8 (K)
Blackbody T 0.3(K) 296.5 (K)
Blackbody T 0.7(K) 239.9 (K)
Tidally Locked Blackbody T 0.1(K) 375.5 (K)
Tidally Locked Blackbody T 0.3(K) 352.7 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 73526
Alternate Name :
Star Distance(LY) : 310.9
Stellar Radius(Rsun) : 1.5 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 5.6 (GY)
Temperature : 5590 (K)
Spectral type : G6 V
UV portion[%]: 7.2
Visible portion[%]: 43.8
IR portion[%]: 48.9
Metalicity : 0.2
Absolute Magnitude: 4.1
Apparent Magnitude: 9.0
Right Ascension(RA) 129.3167
Declination (DEC) -41.3189
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "C. G. Tinney, R. Paul Butler, Geoffrey W. Marcy, Hugh R. A. Jones, Gregory Laughlin, Brad D. Carter, Jeremy A. Bailey, and Simon O„¹”£„»­µoole2"
Discovery Paper - Title THE 2:1 RESONANT EXOPLANETARY SYSTEM ORBITING HD 735261
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+73526&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2073526%20c/
HD 73526 c
HD 73526 c

  • HD 73526 c is an exoplanet orbiting the star HD 73526, located about 310.9 light-years (95.3 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star HD 73526 has apparent magnitude of 9.0, with absolute magnitude of 4.1.
  • It is 1.1 times more massive and 1.5 times bigger compared with our Sun. The surface temperature is 5590 with its spectral types of G6 V
  • In this planetary system, the extrasolar planet HD 73526 c orbits around the star HD 73526 every 379.1 days with its orbital distance of 1.03 AU ( 154085806.8 km)
  • (Projected orbit of HD 73526 c around its host star HD 73526)


  • The Star HD 73526 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.009 AU ( 150892619.0 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.394 AU ( 208573032.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.124 AU ( 317819144.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.126 AU ( 467684793.7 km)
  • Radiation at Planetary Boundary of HD 73526 c : 2505.82 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 73526)



  • Kopparapu Recent Venus for Star HD 73526 distance : 1.057 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 73526 distance : 1.339 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 73526 distance : 1.293 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 73526 distance : 1.418 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 73526 distance : 2.377 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 73526 distance : 2.507 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 73526)



  • Original Kopparapu Recent Venus for Star HD 73526 distance : 1.055 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 73526 distance : 1.377 AU
  • Original Kopparapu Moist Greenhouse for Star HD 73526 distance : 1.396 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 73526 distance : 2.418 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 73526 distance : 2.514 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 73526)



    (Position in Stellar Map of star HD 73526 and its Exoplanet HD 73526 c)



    (Zoomed position in Stellar Map of star HD 73526 and its Exoplanet HD 73526 c (zoom level 3))

    (Synthetic Spectrum of star HD 73526*)
    *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