The 23 - 52 metre wide asteroid 2013 GT66 will make a close pass (7.1 lunar distances, 0.0182 AU), travelling at 10.81 km/second, to the Earth-Moon system on the 13th April, 2013 @ 01:54 UT ±00:01.
Orbital elements:
2013 GT66 Earth MOID = 0.0121 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 254.03792 (2000.0) P Q
n 1.25711018 Peri. 321.81120 +0.94994133 +0.29861199
a 0.8502641 Node 21.36932 -0.18639642 +0.77769546
e 0.3231965 Incl. 14.60548 -0.25073462 +0.55319133
P 0.78 H 25.2 G 0.15 U 7