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Fig. 6

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Cumulative histogram of spin rates for Hungaria family asteroids across different taxonomic types, expressed as a fraction of the total population. Asteroids classified as X-types are assumed to be E-types, and have been grouped together. A total sample of 39 (65, 16) S (C, X/E)-type asteroids with known spin periods were considered. Very slow rotating asteroids (P>100 h) were excluded from the sample. S-type asteroids tend to rotate significantly faster than C or X/E type asteroids. The sample is diameter limited (2.5 km < D < 10 km), with diameters estimated based on the absolute magnitude and average albedo for the taxonomic class (from Mahlke et al. 2022). Analysis without the diameter limitation and sample sizes of 88 (106, 167) S (C, X/E)-type asteroids provide similar results.

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