The 380 - 840 metre wide asteroid 1999 XL136 will make a close pass (53 lunar distances, 0.3760 AU), travelling at 17.80 km/second, to the Earth-Moon system on the 4th April, 2017 @ 18:58 UT ±00:01.
Orbital elements:
1999 XL136 PHA, Earth MOID = 0.0039 AU
Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC
M 59.37947 (2000.0) P Q
n 0.40214943 Peri. 274.98706 -0.98348376 +0.09374054
a 1.8177929 Node 270.45211 -0.02552341 -0.91871265
e 0.6474758 Incl. 8.90723 -0.17918776 -0.38364016
P 2.45 H 19.6 G 0.15 U 1