Distribution of the geometric albedo (p_V) for members of the Nysa-Polana complex, cross-matched with NEOWISE. The histogram is fitted with a three-component GMM. The color curves represent the individual fitted components, defined by their mean albedo (µ), standard deviation (σ), and mixing weight (w), corresponding to the dark Polana-Eulalia complex (p_V ∼ 0.06), an intermediate Hertha group (p_V ∼ 0.23), and the bright Nysa group (p_V ∼ 0.35).