Phased Doppler velocities for BD −10°3166. The same best‐fit sinusoid is shown in Figs. 3 and 4. The rms to the sinusoidal fit is 8.1 m s﹩^{-1}﹩, slightly worse than the best‐fit Keplerian. The period is 3.487 days, and the semiamplitude is 60.6 m s﹩^{-1}﹩. Assuming the mass of BD −10°3166 is 1.1 M﹩_{\odot }﹩, the minimum (﹩M\mathrm{sin}\,i﹩) mass of the companion is 0.48 M﹩_{\mathrm{JUP}\,}﹩, and the semimajor axis is 0.046 AU.