It is probably a good idea to search, at some level, for asteroids that come to the Earth's general vicinity. But merely counting the asteroids found is not sufficient. It is desirable to follow up each discovery to examine whether it can or can not be a threat during the next century or so. Objects for which the threat cannot be eliminated should be singled out for special study, notably to the extent of searching for old images in photographic archives. 1997 XF11 was noteworthy for the apathy shown to it prior to the very widespead announcement in March. If proper attention had been given to it earlier, the circumstances that led to the announcement would never have occurred. Sometimes statistics will conspire to draw attention to a problem. Maybe they are trying to tell us something. (Brian G. Marsden)

It is probably a good idea to search, at some level, for asteroids that come to the Earth's general vicinity. But merely counting the asteroids found is not sufficient. It is desirable to follow up each discovery to examine whether it can or can not be a threat during the next century or so. Objects for which the threat cannot be eliminated should be singled out for special study, notably to the extent of searching for old images in photographic archives. 1997 XF11 was noteworthy for the apathy shown to it prior to the very widespead announcement in March. If proper attention had been given to it earlier, the circumstances that led to the announcement would never have occurred. Sometimes statistics will conspire to draw attention to a problem. Maybe they are trying to tell us something.

Brian G. Marsden

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announcement apathy archives attention century counting desirable discovery draw early examine extent found follow general given good idea led level march maybe next noteworthy prior problem proper searching search should show something special statistics study tell threat trying vicinity circumstances

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