﹩N_{c}﹩ plotted vs. absolute magnitude for SDSS, for pairs in five ranges of projected separation. Over the range ﹩-22< M_{r}< -18﹩, the mean ﹩N_{c}﹩ for close pairs (5–20 ﹩h^{-1}﹩ kpc) is ﹩0.021\pm 0.001﹩. The ﹩N_{c}﹩ distribution is approximately flat for the smallest separation pairs, and becomes steeper as pair separation increases.