Percentage of solar-type stars (0.8 M_⊙  < M_s < 1.2 M_⊙) located within 0.7 pc (solid line) or 0.5 pc (dashed line) from the cluster center at the moment of the encounter, which has a periastron in the range 100–1000 AU during the first Myr of the cluster development as a function of mean cluster density. The mean density is the spatial and temporale mean during this 1 Myr timespan. The dotted line shows the percentage of stars that have an encounter closer than 100 AU.