sentences:  It has a mildly eccentric orbit, with an eccentricity of 0.15.Epsilon Tauri b was discovered by using the High Dispersion Echelon Spectrograph at Okayama Astrophysical Observatory (OAO) as part of a process to study G-type and K-type giant stars to search for exoplanets.Measurements of radial velocity from Epsilon Tauri were taken between December 2003 and July 2006.