Orbital elements:
2004 JN1 Earth MOID = 0.0232 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 39.15024 (2000.0) P Q
n 0.87208671 Peri. 2.11744 -0.83010011 -0.55740242
a 1.0849997 Node 143.99235 +0.51121610 -0.77175017
e 0.1754717 Incl. 1.49849 +0.22269242 -0.30611144
P 1.13 H 23.6 G 0.15 U 2
Update: The 54 - 120 metre wide asteroid 2004 JN1 will make a close pass (57.3 lunar distances, 0.1473 AU), travelling at 8.96 km/second, to the Earth-Moon system on the 1st December, 2011 @ 05:42 UT ±04:54.
The 54 - 120 metre wide asteroid 2004 JN1 will make a close pass (57.5 lunar distances, 0.1476 AU), travelling at 8.97 km/second, to the Earth-Moon system on the 1st December, 2011 @ 05:13 UT ±06:11.