2013 ET is a near-Earth asteroid that was first observed on March 3, 2013, six days before its closest approach to Earth. It is estimated to be around 100 meters (330 feet) wide. The orbit of 2001 SY169 has been connected to 2013 ET extending the observation arc to 11 years. Its closest approach to Earth was 0.0065207 AU (975,480 km; 606,140 mi) on March 9, 2013 at 12:09 UT. The asteroid also makes close approaches to Mars and Venus. The asteroid was imaged by Goldstone radar on March 10, 2013.