English: A plot of proper elements of 2,608 asteroids in the Nysa-Polana complex of asteroid families, showing semi-major axis on the x-axis and inclination (in degrees) on the y-axis, highlighting the albedo of each asteroid as its color. Diameters of each circle are proportional to the diameter of the asteroid.

The Nysa-Polana complex consists of at least two subgroups of different asteroid spectral types and brightnesses. The top of the plot shows at least one family of darker B- and C-type asteroids, including 142 Polana and Eulalia. The bottom of the plot at lower inclination shows a family of smaller, primarily S-type asteroids in orange; this has been referred to in literature as the 135 Hertha or Nysa_S family. Confusingly, 44 Nysa is an E-type asteroid and does not belong to the complex or either subgroup.

Important orbital resonances are marked on the top of the plot; from right to left, these are the 3:1 Jupiter resonance (yellow), the 1:2 Mars resonance (red), and the three-body resonance ${\displaystyle {\alpha }_A=4{\alpha }_J-2{\alpha }_S}$ involving the mean motions of the asteroid, Jupiter, and Saturn.

Proper elements and Nysa-Polana complex membership (less Eulalia) are from a dataset by Nesvorný, 2026 (https://dx.doi.org/10.3847/1538-4365/ae4bd4); diameters and albedos are provided by JPL SBDB where available (https://ssd.jpl.nasa.gov/tools/sbdb_query.html).