HIP 12390 spectroscopic orbit (left panel) with HERMES data points alone, which allow a better separation between the two components than the earlier, lower resolution data from CORAVEL (Duquennoy & Mayor 1988). The right panel shows the simultaneous visual solution. The red dots represent measurements used in the derived solution that is mostly based on data acquired after 1975. The red diamonds in the left panel correspond to the component listed as ‘2’ in Table 4, which has a wider (7.4 km s^–1, after correction for the instrumental width of 3 km s^–1), but less contrasted contribution to the cross-correlation profile. Component A has a cross-correlation profile consistent with the instrumental width.