The 370 - 820 metre wide asteroid 2010 PR66 will make a close pass (24.5 LD, 0.0630 AU) travelling at 17.67 km/second, to the Earth-Moon system on the 21st July 2015 @ 09:28 UT ±00:01.
Orbital elements: 2010 PR66 PHA, Earth MOID = 0.0027 AU Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 7.22612 (2000.0) P Q n 0.21584374 Peri. 315.88606 -0.27238010 +0.92977036 a 2.7523886 Node 296.84923 -0.78794824 -0.36326296 e 0.6740557 Incl. 16.11616 -0.55221976 +0.05972525 P 4.57 H 19.5 G 0.15 U 8