Sometimes, correlations in the data can be deceptive. When plotting the computed Specific Energy vs the Specific Angular momentum, we find a couple of, what look like, distinct families in the aperiodic comets.

When you examine the data however, you find that the strings of comets on these plots have identical eccentricities. The lowest string on the above plot are comets all with eccentricity of 0.999, while the string above it have eccentricities of 0.998, and so forth. The precision of the eccentricities being 'granular' to the third decimal place causes artificial clumpings on the lower part of this graph.