* Astronomy

Orbital elements:
2011 DU9                                                 Earth MOID = 0.0011 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5                  MPC
M   3.68791              (2000.0)            P               Q
n   0.37611256     Peri.  326.32793     -0.52571813     -0.85032751
a   1.9007463      Node   155.36341     +0.79248603     -0.49971873
e   0.5069398      Incl.    3.26468     +0.30917041     -0.16499792
P   2.62           H   26.6           G   0.15           U   6

MPEC 2011 - D49

The 13 - 29 metre wide asteroid 2011 DU9 made a close pass (0.8 lunar distances, 0.0019 AU), travelling at 8.90 km/second, to the Earth-Moon system on the 23rd February, 2011 @ 18:43 UT ±00:59.

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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).