51 Pegasi b
(51 Peg b)
(first exoplanet found orbiting a main sequence star)
51 Pegasi b (51 Peg b)
is a hot Jupiter of at least half a Jupiter mass,
orbiting a G-type star, but close to the star
with an orbital period of a little more than 4 Earth days.
It was identified in 1995 using the radial velocity method
and was the first extra-solar planet discovered that orbits
a main sequence star.
Its orbital radius and its mass are derived from the star's radial
velocity differences and the star's mass as suggested by its
spectral class. Other planet characteristics ascribed to
it are reasoned from these.
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|~0||15.6pc||50.9ly||51 Pegasi b|
|Coordinates:||51 Peg b|