Imaginary Picture of HD 66428 b

Display orbital revolution of HD 66428 b around the hoststar HD 66428
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Exoplanet Name : HD 66428 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 2.8200 (Mjup) 896.5852 (Mearth)
Semi Major Axis / Orbital Distance Calculated 3.1800 (AU) 3.1800 (AU Est.)
Eccentricity : 0.4650
Orbital Period(Yrs) 5.4016
Orbital Period(Observed/Estimated) 1973.00 (Days Obs.) 1935.22 (Days Est.)
Star Radiation at Atmospheric Boundary: 160.1 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 158.8 (K)
Blackbody T 0.3(K) 149.1 (K)
Blackbody T 0.7(K) 120.6 (K)
Tidally Locked Blackbody T 0.1(K) 188.8 (K)
Tidally Locked Blackbody T 0.3(K) 177.3 (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 66428
Alternate Name :
Star Distance(LY) : 174.2
Stellar Radius(Rsun) : 1.1 (Rsun Estimated)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 5.6 (GY)
Temperature : 5752 (K)
Spectral type : G5
Metalicity : 0.3
Absolute Magnitude: 4.6
Apparent Magnitude: 8.2
Right Ascension(RA) 120.8694
Declination (DEC) -1.1625
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Feng,.atherina; Wright,ason.; Nelson,enjamin; Wang,haron.; Ford,ric.; Marcy,eoffrey.; Isaacson,oward; Howard,ndrew."
Discovery Paper - Title The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets
Discovery Paper - Journal The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets
Discovery Paper - URL http://iopscience.iop.org/article/10.1088/0004-637X/800/1/22/meta
SIMBAD LINK http://simbad.harvard.edu/simbad/sim-basic?Ident=HD+66428&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%2066428%20b/
HD 66428 b
HD 66428 b

  • HD 66428 b is an exoplanet orbiting the star HD 66428, located about 174.2 light-years (53.4 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star HD 66428 has apparent magnitude of 8.2, with absolute magnitude of 4.6.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5752 with its spectral types of G5
  • In this planetary system, the extrasolar planet HD 66428 b orbits around the star HD 66428 every 1973.0 days with its orbital distance of 3.18 AU ( 475721228.8 km)
  • (Projected orbit of HD 66428 b around its host star HD 66428)


  • The Star HD 66428 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.787 AU ( 117765639.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.088 AU ( 162782889.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.658 AU ( 248045099.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.440 AU ( 365009230.3 km)
  • Radiation at Planetary Boundary of HD 66428 b : 160.13 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 66428)



  • Kopparapu Recent Venus for Star HD 66428 distance : 0.817 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 66428 distance : 1.035 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 66428 distance : 0.999 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 66428 distance : 1.096 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 66428 distance : 1.829 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 66428 distance : 1.929 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 66428)



  • Original Kopparapu Recent Venus for Star HD 66428 distance : 0.818 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 66428 distance : 1.063 AU
  • Original Kopparapu Moist Greenhouse for Star HD 66428 distance : 1.082 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 66428 distance : 1.861 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 66428 distance : 1.935 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 66428)



    (Position in Stellar Map of star HD 66428 and its Exoplanet HD 66428 b)



    (Zoomed position in Stellar Map of star HD 66428 and its Exoplanet HD 66428 b (zoom level 3))