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Fig. 10


Plot of known geometric albedos vs. Tisserand invariant for Tj < 3 NEAs and UAs (green squares) and Tj > 3 NEAs and UAs (purple diamonds). Active cometary nuclei are represented by red circles. A vertical line marks the dynamical boundary Tj = 3. There are 57 high-Tisserand albedos plotted, 56 of which are NEAs. The left panel shows the entire range of Tisserand values, and the right panel shows just the region near Tj = 3. The fraction of objects with comet-like albedos differs greatly from one side of the dynamical boundary to the other. A large fraction of the objects with Tj < 3 or precisely with Tj between 2 and 3 have comet-like albedos (from Fernandez et al. 2001).

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