Imaginary Picture of HD 70642 b

Display orbital revolution of HD 70642 b around the hoststar HD 70642
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Exoplanet Name : HD 70642 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.0000 (Mjup) 635.8760 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.3000 (AU) 3.3000 (AU Est.)
Eccentricity : 0.1000
Orbital Period(Yrs) 6.1080
Orbital Period(Observed/Estimated) 2231.00 (Days Obs.) 2189.58 (Days Est.)
Surface Gravity (G Earth) 6.1409
Star Radiation at Atmospheric Boundary: 82.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 134.4 (K)
Blackbody T 0.3(K) 126.2 (K)
Blackbody T 0.7(K) 102.1 (K)
Tidally Locked Blackbody T 0.1(K) 159.8 (K)
Tidally Locked Blackbody T 0.3(K) 150.0 (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 70642
Alternate Name :
Star Distance(LY) : 95.2
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 3.9 (GY)
Temperature : 5670 (K)
Spectral type : G5 IV-V
UV portion[%]: 7.5
Visible portion[%]: 44.3
IR portion[%]: 48.2
Metalicity : 0.2
Absolute Magnitude: 4.8
Apparent Magnitude: 7.2
Right Ascension(RA) 125.3672
Declination (DEC) -39.7053
Hubble Space Telescope Guide Star Catalog (GSC) ID
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+70642+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2070642%20b/
HD 70642 b
HD 70642 b

  • HD 70642 b is an exoplanet orbiting the star HD 70642, located about 95.2 light-years (29.2 pc) away from Solar System. Its discovery was publicly announced on 2003.
  • The host star HD 70642 has apparent magnitude of 7.2, with absolute magnitude of 4.8.
  • It is 1.0 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5670 with its spectral types of G5 IV-V
  • In this planetary system, the extrasolar planet HD 70642 b orbits around the star HD 70642 every 2231.0 days with its orbital distance of 3.30 AU ( 493672973.3 km)
  • (Projected orbit of HD 70642 b around its host star HD 70642)


  • The Star HD 70642 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.585 AU ( 87519235.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.809 AU ( 120974455.2 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.232 AU ( 184338298.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.813 AU ( 271261881.1 km)
  • Radiation at Planetary Boundary of HD 70642 b : 82.12 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 70642)



  • Kopparapu Recent Venus for Star HD 70642 distance : 0.610 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 70642 distance : 0.773 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 70642 distance : 0.746 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 70642 distance : 0.818 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 70642 distance : 1.369 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 70642 distance : 1.444 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 70642)



  • Original Kopparapu Recent Venus for Star HD 70642 distance : 0.610 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 70642 distance : 0.794 AU
  • Original Kopparapu Moist Greenhouse for Star HD 70642 distance : 0.807 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 70642 distance : 1.393 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 70642 distance : 1.448 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 70642)



    (Position in Stellar Map of star HD 70642 and its Exoplanet HD 70642 b)



    (Zoomed position in Stellar Map of star HD 70642 and its Exoplanet HD 70642 b (zoom level 3))

    (Synthetic Spectrum of star HD 70642*)
    *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