Because of the high background density of asteroids in this part of space, one might expect that a great number of asteroids unrelated to the collision that made the family would be present. However, few have been found. This is because unrelated asteroids are hard to distinguish from family members because the family is of the same spectral type (S) that dominates the closer main belt overall. The few unrelated asteroids that have been found are all small (Florczak "et al." 1998, and also by inspection of the PDS asteroid taxonomy data set for non S-type members.) They include 298 Baptistina, 422 Berolina, 2093 Genichesk, 2259 Sofievka (the biggest, with a 21 km diameter), 2952 Liliputia, 3533 Toyota, 3850 Peltier, 3875 Staehle, 4278 Harvey, 4396 Gressmann, and 4750 Mukai.