The 49 - 110 metre wide asteroid 2013 GF23 made a close pass (32.5 lunar distances, 0.0836 AU), travelling at 14.48 km/second, to the Earth-Moon system on the 5th April, 2013 @ 02:14 UT ±00:21.
Orbital elements:
2013 GF23 Earth MOID = 0.0790 AU
Epoch 2013 Apr. 18.0 TT = JDT 2456400.5 MPC
M 149.74450 (2000.0) P Q
n 1.24219468 Peri. 204.28311 +0.75711478 -0.63767922
a 0.8570568 Node 197.75456 +0.64920716 +0.75864914
e 0.3209938 Incl. 27.73714 +0.07285102 -0.13347916
P 0.79 H 23.6 G 0.15 U 7