The 120 - 270 metre wide asteroid 1998 WB2 made a close pass (28.8 lunar distances, 0.0740 AU), travelling at 15.52 km/second, to the Earth-Moon system on the 6th April, 2010.
Orbital elements: 1998 WB2 = 2010 GJ7 PHA, Earth MOID = 0.0148 AU Id. F. Manca Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 53.26069 (2000.0) P Q n 0.35489165 Peri. 78.60268 -0.65492813 -0.75497250 a 1.9757813 Node 52.36251 +0.67609787 -0.60486814 e 0.5867745 Incl. 2.38468 +0.33758083 -0.25328059 P 2.78 H 21.8 G 0.15 U 0
Orbital elements: 2010 GJ7 PHA, Earth MOID = 0.0133 AU Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 54.11386 (2000.0) P Q n 0.35982102 Peri. 77.21697 -0.64745365 -0.76140026 a 1.9576950 Node 53.18211 +0.68238212 -0.59833111 e 0.5843566 Incl. 2.34553 +0.33934998 -0.24953862 P 2.74 H 21.6 G 0.15 U 9
The 110 m - 250 metre wide asteroid 2010 GJ7 made a close pass (28.8 lunar distances, 0.0740 AU), travelling at 15.54 km/second, to the Earth-Moon system on the 6th April, 2010.