Newer Links Than Larry's To Answer Your Question
Current impact risks by palermo scale
http://neo.jpl.nasa.gov/risk/
Current impact risks by designation
http://neo.jpl.nasa.gov/risk/index_d.html
Individual statistics available by clicking on the name.
http://neo.jpl.nasa.gov/risk/1997xr2.html
Removed risks including 2002 NT7 removed in August 2002
http://neo.jpl.nasa.gov/risk/removed.html
Regards,
Mark
PS You know how resistant to change Larry has become lately ;-)
