The Sutter's Mill meteorite is a carbonaceous chondrite which entered the Earth's atmosphere and broke up at about 07:51 Pacific time on April 22, 2012. The name comes from the Sutter's Mill, the California Gold Rush site, near which some pieces were recovered. This was the largest meteoroid impact over land since asteroid 2008 TC3. Meteor astronomer Peter Jenniskens assigned SM numbers to each meteorite, with the documented find location preserving information about where a given meteorite was located in the impacting meteoroid. As of May 2014, 79 fragments have been publicly documented with a find location. The largest (SM53) weighs 205 grams, and the second largest (SM50) weighs 42 grams.