(392741) 2012 SQ31, provisional designation 2012 SQ31, is a sub-kilometer Florian asteroid from the inner regions of the asteroid belt, approximately 700 meters (2,300 feet) in diameter. It was originally considered a trans-Neptunian object and lost minor planet during 2004–2012. The date of the official discovery was later set to 27 December 2009, and credited to astronomers of the Spacewatch program conducted at the Kitt Peak National Observatory near Tucson, Arizona, in the United States.