21 Lutetia

作者：John van Vliet Greg Frieger

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21 Lutetia is a large M-type main-belt asteroid about 120 km in diameter. It was visited by Rosetta at a distance of 3,162 km on 10 July 2010, which it briefly became the largest asteroid ever visited by a spacecraft until Dawn inserted itself into orbit around 4 Vesta just a year later.

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