Nearest and farthest

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Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jbaa..114..182h&link_type=abstract

Journal of the British Astronomical Association, vol.114, no.4, p.182

Astronomy and Astrophysics

Astronomy

Scientific paper

March saw two records broken in the Solar System. On 2004 March 18 a 30metre diameter rock (some reports estimated the size at 20m) passed the Earth at a distance of some 46,200km. This is the closest pass ever observed that did not at least graze the atmosphere. 2004 FH was spotted a couple of days before the approach and at its closest reached magnitude approximately 11.5. Initially there is always a need for accurate positional data to assess whether there is a risk of Earth impact which, in every case to date, fortunately there was not.

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