The 250 - 570 metre wide asteroid (277475) 2005 WK4 will make a close pass (65.7 LD, 0.1688 AU) travelling at 13.30 km/second, to the Earth-Moon system on the 16th August 2015 @ 12:01 UT ±00:01.
The 250 - 570 metre wide asteroid 2005 WK4 will make a close pass (28.0 lunar distances, 0.0720 AU), travelling at 10.67 km/second, to the Earth-Moon system on the 12th August 2014 @ 11:27 UT ±00:01.
A collage of radar images of near-Earth asteroid 2005 WK4 was generated by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, CA, on August 8th, 2013.
The 260 - 580 metre wide asteroid 2005 WK4 will make a close pass (8.1 lunar distances, 0.0207 AU), travelling at 8.38 km/second, to the Earth-Moon system on the 9th August, 2013 @ 05:02 UT ±00:01.
The 260 - 580 metre wide asteroid 2005 WK4 will make a close pass (49.9 lunar distances, 0.1283 AU), travelling at 6.18 km/second, to the Earth-Moon system on the 9th August, 2012 @ 00:35 UT ±00:01.