Current distribution of known periods and maximum amplitudes among the ~1200 brightest main belt asteroids (based on LCDB, Warner et al. 2009, updated 2016 September 5 ). Division values are P = 12 h and amax = 0.25 mag. The amount of spin and shape modelled targets is marked within each group. Asteroids with specific features are over-represented, while others are largely omitted.
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