Asteroid 2011 MD, a chunk of rock estimated to be 25 to 55 feet (8 to 18 m) across, is expected to pass less than 8,000 miles above Earth’s surface around 1 p.m. EDT (17:00 UT) on Monday, June 27th. The actual event will be observable only from South Africa and parts of Antarctica, but the approach will be visible across Australia, New Zealand, southern and eastern Asia, and the western Pacific.
The asteroid was spotted on June 22nd by LINEAR, the Lincoln Near-Earth Research project. Its discovery was announced on Thursday morning by the Minor Planet Center.
Granted, this object is not really a threat, but it does make you wonder about the NEO’s we haven’t discovered yet.