Catalog of Exoplanets

 399 Exoplanets

HD 209458 b

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Planet Name HD 209458 b 
Explanation of Animations
Orbital Period (days) 3.52475 
Semi-major Axis (AU) 0.04707 
Eccentricity 0.0147 
Argument of Periapse (degrees)
 84 
Inclination (degrees)
 86.55 
Discovery Method/Date Code RV99 
Planet Mass (in Jupiter masses) 0.657 
Planet Radius (in Jupiter radii)
 1.36 
Planet Density (in grams/cc)
 0.35 
Number of Planets in System
 1 
Star Name
 HD 209458 
Alternative Star Name
  
Star Mass (in solar masses)
 1.06 
Star Radius (in solar radii)
 1.148 
Stellar Spectral Type
 G0V 
Star Brightness (Visual Magnitudes)
 7.65 
Right Ascension
 22 03 10 
Declination
 +18 53 04 
Distance to the System (light-years)
 153.2 
Metal Enhancement
 1.10