A Mile-Wide Asteroid With Its Own Moon to Pass by Earth This Weekend

This handout picture from the European Space Agency (ESA) retrieved on Sept. 3, 2008, shows an artist's rendition of ESA's probe Rosetta's closest approach to Earth during its second swing-by of our planet on Nov. 13, 2007.AFP/Getty Images

An asteroid which measures approximately a mile wide and is orbited by its own moon is expected to pass by the Earth on Saturday, May 25, at speeds of 48,000 mph.

The asteroid, which was discovered 20 years ago, is dubbed by NASA as Asteroid 1999 KW4, and is expected to be visible until May 27.