Tags: Planet.
81 Ceti b (abbreviated 81 Cet b) is an extrasolar planet approximately 300 light years away in the constellation of Cetus. It orbits the G-type giant star 81 Ceti at an average distance of 2.5 AU taking about 2.6 years to revolve with 20.6% eccentricity. This planet was discovered on July 3 2008 by Sato et al. who used Doppler Spectroscopy and found the wobbling of the star caused by the planet’s gravity during its revolution.