Officials at Perkins Observatory in Delaware say amateur astronomers will have the opportunity to view this weekend an asteroid which has its own moon.
The asteroid, known by the designation 1999 KW4 and estimated to be nearly a mile wide, will be visible by telescopes with at least an eight-inch diameter Friday through Monday as it passes by Earth. The asteroid will best be seen in North American skies between the constellations Hydra and Leo. It is expected to pass at a distance of over three million miles and will return in 2036.