Published: 
Jan 29, 2010

Untitled Document

Distribution of PHA Sizes
Distribution 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
%
200 8 3.03%
400 68 28.79%
600 52 48.48%
800 31 60.23%
1000 21 68.18%
2000 48 86.36%
5000 31 98.11%
10000 5 100.00%
More 0 100.00%