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==The Star==

==The Star==

51 Pegasi is a yellow-orange main sequence star of spectral class G4-5 Va.  The [[star]] is remarkably similar to our own [[sun]], having 1.06 times the mass, 1.15 to 1.4 times the diameter, and 1.30 times the visual luminosity.  The star is also 60% more abundant in elements heavier then [[hydrogen]] and [[helium]] ([[metallicity]])<ref>http://solstation.com/stars2/51pegasi.htm</ref>.

51 Pegasi is a yellow-orange main sequence star of spectral class of G4-5 Va, although it has been previously classified as G2IV-V (meaning either a dwarf or a subgiant).  The [[star]] is remarkably similar to our own [[sun]], having 1.06 times the mass, 1.15 to 1.4 times the diameter, and 1.30 times the visual luminosity.  The star is also 60% more abundant in elements heavier then [[hydrogen]] and [[helium]] ([[metallicity]])<ref>http://solstation.com/stars2/51pegasi.htm</ref>.  51 Pegasi rotates once every 37 days, somewhat slower then the Sun's 25 day rotation.

The star is believed to be farther along on its path of stellar evolution and appears to be running low on its hydrogen fuel needed for [[stellar fusion]].  The star is estimated to be between 7.5 billion and 8.5 billion years of age<ref>http://www.aip.org/baas/vol_31/030901bas.pdf</ref>.

The star is believed to be farther along on its path of stellar evolution and appears to be running low on its hydrogen fuel needed for [[stellar fusion]].  The star is estimated to be between 7.5 billion and 8.5 billion years of age<ref>http://www.aip.org/baas/vol_31/030901bas.pdf</ref>.