Differnces between comets and asteroids show up dynamically in other ways as well. Note below the plot showing Specific Angular Momentum plotted against perihelion distance. Along the upper curve the aperiodic comets lie, while the periodic comets and the asteroids are grouped closer together, with the comets on top because the comets in general have a higher eccentricity. Note below that long-period comets also show themselves in yet another way. Below we see another interesting comparison.
Correlations exist between the raw orbital elements as well.