Top panel: cumulative magnitude distribution N(< H) of the Martes family members. The black symbols are all 6 known members (including the largest asteroid (5026) Martes shown by the diamond). The top abscissa indicates an approximate size computed from H with an assumption of p_V = 0.06 value of the geometric albedo (conforming the Ch-class taxonomy). Bottom panel: detection probability p(H) of Martes members as a function of H during the phase 2 operations of CSS based on analysis of geometric and photometric detection factors run on a large synthetic population of Martes members. We find that p = 1 up to H ≃ 17.5 magnitude, which sets the limit where the Martes population is complete (dashed line on the upper panel). Beyond this limit p decreases to zero at about 20.5 magnitude. At magnitude ≃20 p ≃ 0.1. This implies that the three very small members recently detected must represent a tiny sample of a much larger population having about the same size.