Discovered by Robert McMillan of the Spacewatch Program near Tucson, Arizona on December 28, 2005, the third near-earth asteroid of 2011, named 2005 YU55 will pass between the Moon and the Earth on November 8. The dark, near spherical rock of 400 meters diameter will move as close as 0.85 lunar distances from earth, confirmed NASA marking it the closest approach to date by an object this large that we know about in advance.
Though classified as a potentially hazardous object, 2005 YU55 poses no threat to Earth for at least the next 100 years, reported NASA’s Neart Earth Object Program.
The approach of 2011 MD had created a news earlier this week, when it passed roughly 7,500 miles close to Earth. Earth’s gravity sharply altered its trajectory, preventing it from hitting the planet. However, the International Astronomical Union’s Minor Planet Center in Massachusetts, USA did put out an alert.
According to space scientist Clark Chapman of the Southwest Research Institute in Boulder, Colorado, USA, there is a roughly 50 percent chance of a 30-meter-plus asteroid striking Earth each century. We can expect the next event of this type in 2028 when asteroid (153814) 2001 WN5 will pass within 0.6 lunar distances to earth.