The ~1700 metre wide asteroid (164121) 2003 YT1 makes its closest approach in the constellation Auriga (0.035 AU, 13.5 lunar distances) to the Earth at 09:25 UT, 31st October 2016.
The 1600 - 3400 metre wide asteroid 2003 YT1 will make a close pass (65.3 Lunar Distances, 0.1679 AU), travelling at 25.95 km/s, to the Earth-Moon system on the 5th May, 2011 @ 08:19 UT ±00:01 minutes.
The 1500 - 3400 metre wide asteroid 2003 YT1 will make a close pass (46.4 Lunar Distances, 0.1192 AU), travelling at 25.27 km/s, to the Earth-Moon system on the 28th October, 2009.