The small asteroid, named 2011 CQ 1, passed within 5470 km (3400 miles) of Earth at about 2:40 p.m. EST (19:40 GMT). It was discovered just hour or two later by astronomer Richard A. Kowalski.
Astronomy Magazine
A tiny asteroid passed close by Earth Friday (Feb. 4) but posed no threat of impacting our planet - or even reaching the surface, NASA officials say.
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