(143649) 2003 QQ47 (also written 2003 QQ47) is an asteroid which became briefly notable upon its discovery in late August 2003 when media outlets played up a very preliminary report that it had a 1 in 250,000 chance of impacting into Earth on March 21, 2014. It is known that 2003 QQ47 will safely pass 0.1283 AU (19,190,000 km; 11,930,000 mi) from Earth on March 26, 2014. With an observation arc of 10 years and an orbital uncertainty of 0, its orbit and future close approaches are well determined.