Surveys for Potentially Hazardous Asteroids (Google can find the home pages for all these surveys)

  • Catalina Sky Survey
  • LONEOS (Lowell Observatory)
  • Spacewatch
  • LINEAR
  • Pan-STARRS -- latest and greatest

  • All of these are sensitive to objects ~1 km. Pan-STARRS can find some, but not all, of the 100 meter guys. No one could find the kind of 50 meter object that made Meteor Crater.

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