Track of 2012 LZ1 in Aquilla as seen from Mayhill New Mexico from 14 June to 15 June. Ticks represent half hour intervals. The large rectangelis the fileld of view of T12, and medium rectangle T20 and the small T05. Click to embiggen.
2012 LZ1 is a large Near-Earth Object (NEO) approximately 300-700 metres in size (H=19.7).
Discovered by Rob McNaught on June 10th 2012 from the Uppsala Telescope at Siding Spring Observatory, Australia it was reported in MPEC 2012-L30.
UPDATE: Here's an animation from Nick Howes and team.
2012 LZ1 will be at its closest approach at 13-14 lunar-distances (0.036 AU) on June 14 23:10 UT according to the latest MPEC ephemeris. Unlike the recent NEOs 2012 LZ1 is far enough away that a planetarium program will not have too great a parallax error from the topocentric coordinates (although the topocentric coordinates will always be better). For topocentric ephemerides go to
Spain MPC Code I89, Nth America MPC Code - H06
Always use the latest possible orbital elements and ephemeris, as the orbit is still being refined. The planning guides to viewing YU55 here and here will help organising topocentric ephemerides for the 2012 LZ1 event.
The iTelescopes in Spain will have the best view, with the asteroid coming into the range of the scopes lowest level of travel just after closest approach. The asteroid also zips close to NGC 6822.
The New Mexico scopes come into range around 6 hours after closest approach. The asteroid will be around magnitude 14 for both sites though. It is moving a bit too fast to track on, but slow enough that it will not zip across the frames in a two minute exposure. it will take nearly an hour to cross a T05 frame.