Close Approach Data!
Quote:
The following table shows close approaches to the Earth by near-Earth objects (NEOs) limited as selected in the “Table Settings” below. Data are not available prior to 1900 A.D nor after 2200 A.D. Data are further limited to encounters with https://cneos.jpl.nasa.gov/ca/neo_ca_info.html
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https://cneos.jpl.nasa.gov/ca/
https://www.jpl.nasa.gov/asteroidwatch/
When it comes to a "dangerously close" object that is likely to hit the earth in the near future, no or very little information will be given.