(277475) 2005 WK4

(277475) 2005 WK₄ is a near-Earth asteroid that passed within 8.2 Lunar distances on August 8, 2013. It was radar-imaged by the Deep Space Network dish at Goldstone, USA. The asteroid is between 660 and 980 feet (200 and 300 meters) in diameter, and rotated 2.5 times in 6.5 hours. It had been observed by the Arecibo radar in July 2012 (this was not a close approach though), and is also classified as a Potentially Hazardous Object (PHA). The asteroid was discovered November 27, 2005 by the Siding Spring Survey.