Our far sample. Same as Fig. 1, but for all Hipparcos stars closer than 50 pc. The major reason the target fraction (~61%, triangles) is lower than in the 25 pc sample (~83%) is that K stars become too faint to include in many of the high‐precision Doppler surveys where the apparent magnitude is limited to ﹩V< 7.5﹩ (Lineweaver & Grether 2003). This plot contains 6924 Hipparcos stars, of which 2351 are target stars. The gray parallelogram contains 3296 Hipparcos stars, of which 2001 are high‐precision Doppler target stars (﹩61\% \sim 2001/ 3296﹩). The stars below the main sequence and the stars to the right of the M dwarfs are largely due to uncertainties in the Hipparcos parallax or ﹩B-V﹩ determinations.