We report the first detection of a planetary-mass companion to a star using the High Resolution Spectrograph ( HRS ) of the Hobby-Eberly Telescope ( HET ) .
The HET-HRS now gives routine radial velocity precision of 2-3 m s ^ { -1 } for high SNR observations of quiescent stars .
The planetary-mass companion to the metal-rich K0V star HD 37605 has an orbital period of 54.23 days , an orbital eccentricity of 0.737 , and a minimum mass of 2.84 Jupiter masses .
The queue-scheduled operation of the Hobby-Eberly Telescope enabled us to discovery of this relatively short-period planet with a total observation time span of just two orbital periods .
The ability of queue-scheduled large-aperture telescopes to respond quickly to interesting and important results demonstrates the power of this new approach in searching for extra-solar planets as well as in other ares of research requiring rapid response time critical observations .