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We present the precise radial velocity (RV) data for the metal-rich star HD45350 collected with the Harlan J. Smith (HJS) 2.7 m telescope and theHobby-Eberly Telescope (HET) at McDonald Observatory. This star was noticed byus as a candidate for having a giant planetary companion in a highly eccentricorbit, but the lack of data close to periastron left the amplitude and thusmass of the planet poorly constrained. Marcy et al. (2005) announced thepresence of the planet based on their Keck/HIRES data, but those authors alsocautioned that the remaining uncertainties in the orbital solution might belarge due to insufficient data near periastron passage. In order to close thisphase gap we exploited the flexible queue scheduled observing mode of the HETto obtain intensive coverage of the most recent periastron passage of theplanet. In combination with the long term data from the HJS 2.7 m telescope wedetermine a Keplerian orbital solution for this system with a period of 962days, an eccentricity of e=0.76 and a velocity semi-amplitude K of 57.4 m/s.The planet has a minimum mass of m sin i = 1.82 +- 0.14 M_Jup and an orbitalsemi-major axis of a = 1.92 +-0.07 AU.Comment: 9 pages preprint, 4 figures, accepted in A

Determination of the Orbit of the Planetary Companion to the Metal-Rich Star HD 45350