Imaginary Picture of HD 240210 b

Display orbital revolution of HD 240210 b around the hoststar HD 240210
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Exoplanet Name : HD 240210 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.9000 (Mjup) 2193.7722 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.3300 (AU) 1.3300 (AU Est.)
Eccentricity : 0.1500
Orbital Period(Yrs) 1.3737
Orbital Period(Observed/Estimated) 501.75 (Days Obs.) 501.09 (Days Est.)
Surface Gravity (G Earth) 21.1860
Star Radiation at Atmospheric Boundary: 320.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 188.9 (K)
Blackbody T 0.3(K) 177.4 (K)
Blackbody T 0.7(K) 143.5 (K)
Tidally Locked Blackbody T 0.1(K) 224.6 (K)
Tidally Locked Blackbody T 0.3(K) 211.0 (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 240210
Alternate Name :
Star Distance(LY) : 466.4
Stellar Radius(Rsun) : 1.2 (Rsun Estimated)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4290 (K)
Spectral type : K3III
UV portion[%]: 0.9
Visible portion[%]: 27.5
IR portion[%]: 71.6
Metalicity : -0.2
Absolute Magnitude: 2.6
Apparent Magnitude: 8.3
Right Ascension(RA) 347.6218
Declination (DEC) 57.0294
Hubble Space Telescope Guide Star Catalog (GSC) ID 04006-00980
Discovered by
Discovery Paper - Authors "Niedzielski,.; Nowak,.; Adam_w,.; Wolszczan,."
Discovery Paper - Title Substellar-mass Companions to the K-dwarf BD+14 4559 and the K-giants HD 240210 and BD+20 2457
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+240210+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20240210%20b/
HD 240210 b
HD 240210 b

  • HD 240210 b is an exoplanet orbiting the star HD 240210, located about 466.4 light-years (143.0 pc) away from Solar System. Its discovery was publicly announced on 2009.
  • The host star HD 240210 has apparent magnitude of 8.3, with absolute magnitude of 2.6.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 4290 with its spectral types of K3III
  • In this planetary system, the extrasolar planet HD 240210 b orbits around the star HD 240210 every 501.8 days with its orbital distance of 1.33 AU ( 198965168.0 km)
  • (Projected orbit of HD 240210 b around its host star HD 240210)


  • The Star HD 240210 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.466 AU ( 69717912.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.644 AU ( 96368374.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.982 AU ( 146844075.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.444 AU ( 216087490.2 km)
  • Radiation at Planetary Boundary of HD 240210 b : 320.83 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 240210)



  • Kopparapu Recent Venus for Star HD 240210 distance : 0.518 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 240210 distance : 0.656 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 240210 distance : 0.634 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 240210 distance : 0.696 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 240210 distance : 1.227 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 240210 distance : 1.295 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 240210)



  • Original Kopparapu Recent Venus for Star HD 240210 distance : 0.511 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 240210 distance : 0.678 AU
  • Original Kopparapu Moist Greenhouse for Star HD 240210 distance : 0.677 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 240210 distance : 1.247 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 240210 distance : 1.297 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 240210)



    (Position in Stellar Map of star HD 240210 and its Exoplanet HD 240210 b)



    (Zoomed position in Stellar Map of star HD 240210 and its Exoplanet HD 240210 b (zoom level 3))

    (Synthetic Spectrum of star HD 240210*)
    *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