Imaginary Picture of HD 218566 b

Display orbital revolution of HD 218566 b around the hoststar HD 218566
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Exoplanet Name : HD 218566 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 0.2100 (Mjup) 66.7670 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.6873 (AU) 0.6873 (AU Est.)
Eccentricity : 0.3000
Orbital Period(Yrs) 0.6179
Orbital Period(Observed/Estimated) 225.70 (Days Obs.) 225.74 (Days Est.)
Surface Gravity (G Earth) 0.6448
Star Radiation at Atmospheric Boundary: 1036.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 253.2 (K)
Blackbody T 0.3(K) 237.8 (K)
Blackbody T 0.7(K) 192.4 (K)
Tidally Locked Blackbody T 0.1(K) 301.1 (K)
Tidally Locked Blackbody T 0.3(K) 282.8 (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 218566
Alternate Name :
Star Distance(LY) : 93.7
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 8.5 (GY)
Temperature : 4820 (K)
Spectral type : K3V
UV portion[%]: 2.5
Visible portion[%]: 35.6
IR portion[%]: 61.9
Metalicity : 0.4
Absolute Magnitude: 6.3
Apparent Magnitude: 8.6
Right Ascension(RA) 347.2947
Declination (DEC) -2.2608
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Meschiari,tefano; Laughlin,regory; Vogt,teven.; Butler,.aul; Rivera,ugenio.; Haghighipour,ader; Jalowiczor,eter"
Discovery Paper - Title The Lick-Carnegie Survey: Four New Exoplanet Candidates
Discovery Paper - Journal "The Astrophysical Journal,olume 727,umber 2"
Discovery Paper - URL http://iopscience.iop.org/article/10.1088/0004-637X/727/2/117/meta
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+218566+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20218566%20b/
HD 218566 b
HD 218566 b

  • HD 218566 b is an exoplanet orbiting the star HD 218566, located about 93.7 light-years (28.7 pc) away from Solar System. Its discovery was publicly announced on 2010.
  • The host star HD 218566 has apparent magnitude of 8.6, with absolute magnitude of 6.3.
  • It is 0.8 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 4820 with its spectral types of K3V
  • In this planetary system, the extrasolar planet HD 218566 b orbits around the star HD 218566 every 225.7 days with its orbital distance of 0.69 AU ( 102818616.5 km)
  • (Projected orbit of HD 218566 b around its host star HD 218566)


  • The Star HD 218566 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.433 AU ( 64751620.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.598 AU ( 89503660.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.912 AU ( 136383772.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.342 AU ( 200694695.1 km)
  • Radiation at Planetary Boundary of HD 218566 b : 1036.33 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 218566)



  • Kopparapu Recent Venus for Star HD 218566 distance : 0.472 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 218566 distance : 0.598 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 218566 distance : 0.577 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 218566 distance : 0.634 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 218566 distance : 1.091 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 218566 distance : 1.151 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 218566)



  • Original Kopparapu Recent Venus for Star HD 218566 distance : 0.466 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 218566 distance : 0.616 AU
  • Original Kopparapu Moist Greenhouse for Star HD 218566 distance : 0.617 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 218566 distance : 1.110 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 218566 distance : 1.154 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 218566)



    (Position in Stellar Map of star HD 218566 and its Exoplanet HD 218566 b)



    (Zoomed position in Stellar Map of star HD 218566 and its Exoplanet HD 218566 b (zoom level 3))

    (Synthetic Spectrum of star HD 218566*)
    *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