The 4 - 9 metre wide asteroid 2014 SG1 made a close pass (0.2 lunar distances, 0.0005 AU), travelling at 13.88 km/second, to the Earth-Moon system on the 20th September 2014 @ 14:48 UT ±00:01.
Orbital elements:
2014 SG1 Earth MOID = 0.0010 AU
Epoch 2014 Dec. 9.0 TT = JDT 2457000.5 MPC
M 16.86752 (2000.0) P Q
n 0.63048802 Peri. 253.37687 +0.32918754 -0.94417970
a 1.3469500 Node 177.30277 +0.93597557 +0.32449605
e 0.4083024 Incl. 15.60555 +0.12484111 +0.05680673
P 1.56 H 29.1 G 0.15 U 7