The 140 - 310 metre wide asteroid 2010 HA104 will make a close pass (57.7 lunar distances, 0.1482 AU), travelling at 11.51 km/second, to the Earth-Moon system on the 16th August, 2010 @ 00:29 UT. See more
The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Orbital elements: 2010 HA104 PHA, Earth MOID = 0.0437 AU Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 353.46148 (2000.0) P Q n 0.80862630 Peri. 349.30394 +0.47166930 +0.84677853 a 1.1410486 Node 308.36256 -0.78408995 +0.27516272 e 0.1509056 Incl. 18.28110 -0.40339932 +0.45524894 P 1.22 H 21.7 G 0.15 U 8