Orbital elements:
2004 RQ252 Earth MOID = 0.0000 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 27.44369 (2000.0) P Q
n 0.82531927 Peri. 83.00539 -0.31285665 -0.94803161
a 1.1256103 Node 25.46108 +0.80952918 -0.29806058
e 0.3882804 Incl. 7.74537 +0.49677281 -0.11133713
P 1.19 H 22.3 G 0.15 U 3
The 90 - 200 metre wide asteroid 2004 RQ252 will make a close pass (17.2 lunar distances, 0.0441 AU), travelling at 10.71 km/second, to the Earth-Moon system on the 12th April, 2012 @ 23:13 UT ±12:54.
The 90 - 200 metre wide asteroid 2004 RQ252 will make a close pass (49.4 lunar distances, 0.1270 AU), travelling at 15.48 km/second, to the Earth-Moon system on the 30th September, 2010. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).