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Distribution of PHA SizesDistribution of PHA Sizes

JPL's Steven Pravdo prepared this diagram showing the estimated size distribution of the 264 known Potentially Hazardous Asteroids on August 29, 2000. More than half are 800 meters in diameter or smaller.

Diameter
bin (meters)
Known
PHAs
Cumulative
%
20083.03%
4006828.79%
6005248.48%
8003160.23%
10002168.18%
20004886.36%
50003198.11%
100005100.00%
More0100.00%