Lucky 13 was the nickname given, by the British scientists who identified it, to the thirteenth known SNC meteorite. News of its identification was announced on August 12, 1998. The object, about the size of a softball and weighing 2.2 kilograms (4.8 pounds) was found in the Sahara desert. It is important because it appears to have come from a different part of Mars and to be of a different age from the other known SNC meteorites. It is also the only martian meteorite to have a private owner. Six of the others are owned by the US government and six by museums.