We report the detection of a large mass planet orbiting around the K0 metal-rich subgiant HD38801 ( V = 8.26 ) by precise radial velocity ( RV ) measurements from the Subaru Telescope and the Keck Telescope .
The star has a mass of 1.36 M _ { \odot } and metallicity of [ Fe/H ] = +0.26 .
The RV variations are consistent with a circular orbit with a period of 696.0 days and a velocity semiamplitude of 200.0 { ms } ^ { -1 } , which yield a minimum-mass for the companion of 10.7 M _ { JUP } and semimajor axis of 1.71 AU .
Such super-massive objects with very low-eccentricities and hundreds of days period are uncommon among the ensemble of known exoplanets .