Fig. 3
From: A dynamics based procedure for clustering and classifying space debris
(a) Initial distribution of all fragments in mean elements. (b) Evolution (in lighter colours) of the two groups (purple and green) in the mean (light) and proper (darker) colours for a period of 40 years. (c) The evolution of the estimated PDF in inclination over 40 years in mean (orange) and proper (blue) elements. (d) The evolution of the accuracy of DBSCAN for mean (orange) and proper (blue) elements.
