Imaginary Picture of HD 220074 b

Display orbital revolution of HD 220074 b around the hoststar HD 220074
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Exoplanet Name : HD 220074 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 11.1000 (Mjup) 3529.1118 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.6000 (AU) 1.6000 (AU Est.)
Eccentricity : 0.1400
Orbital Period(Yrs) 1.8401
Orbital Period(Observed/Estimated) 672.10 (Days Obs.) 674.81 (Days Est.)
Surface Gravity (G Earth) 34.0818
Star Radiation at Atmospheric Boundary: 283355.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1029.7 (K)
Blackbody T 0.3(K) 967.0 (K)
Blackbody T 0.7(K) 782.4 (K)
Tidally Locked Blackbody T 0.1(K) 1224.6 (K)
Tidally Locked Blackbody T 0.3(K) 1150.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 220074
Alternate Name :
Star Distance(LY) : 1058.9
Stellar Radius(Rsun) : 49.7 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 4.5 (GY)
Temperature : 3935 (K)
Spectral type : M2III
UV portion[%]: 0.6
Visible portion[%]: 22.6
IR portion[%]: 76.8
Metalicity : -0.2
Absolute Magnitude: -1.2
Apparent Magnitude: 6.4
Right Ascension(RA) 350.0599
Declination (DEC) 61.9700
Hubble Space Telescope Guide Star Catalog (GSC) ID 04283-00211
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+220074+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20220074%20b/
HD 220074 b
HD 220074 b

  • HD 220074 b is an exoplanet orbiting the star HD 220074, located about 1058.9 light-years (324.7 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star HD 220074 has apparent magnitude of 6.4, with absolute magnitude of -1.2.
  • It is 1.2 times more massive and 49.7 times bigger compared with our Sun. The surface temperature is 3935 with its spectral types of M2III
  • In this planetary system, the extrasolar planet HD 220074 b orbits around the star HD 220074 every 672.1 days with its orbital distance of 1.60 AU ( 239356593.1 km)
  • (Projected orbit of HD 220074 b around its host star HD 220074)


  • The Star HD 220074 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 16.662 AU ( 2492537757.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 23.031 AU ( 3445338559.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 35.094 AU ( 5249933512.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 51.642 AU ( 7725507148.1 km)
  • Radiation at Planetary Boundary of HD 220074 b : 283355.80 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 220074)



  • Kopparapu Recent Venus for Star HD 220074 distance : 18.692 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 220074 distance : 23.658 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 220074 distance : 22.848 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 220074 distance : 25.118 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 220074 distance : 45.043 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 220074 distance : 47.519 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 220074)



  • Original Kopparapu Recent Venus for Star HD 220074 distance : 18.472 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 220074 distance : 24.468 AU
  • Original Kopparapu Moist Greenhouse for Star HD 220074 distance : 24.441 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 220074 distance : 45.762 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 220074 distance : 47.592 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 220074)



    (Position in Stellar Map of star HD 220074 and its Exoplanet HD 220074 b)



    (Zoomed position in Stellar Map of star HD 220074 and its Exoplanet HD 220074 b (zoom level 3))

    (Synthetic Spectrum of star HD 220074*)
    *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