HD 209458 b
Astronomical discovery
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HD 209458 b is an exoplanet that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years from the Solar System. The radius of the planet's orbit is 0.047 AU, or one-eighth the radius of Mercury's orbit. Wikipedia
Radius: 59,971 mi
Discovered: September 9, 1999
Gravity: 9.2 m/s²
Discoverers: Michel Mayor, David Charbonneau, Geoffrey Marcy, and more
Orbits: HD 209458
Distance to Earth: 159 light years
Detection method: Radial velocity