The asteroid was its closest on Sunday morning , but the best viewing was Monday night . Asteroid 2011 ##P passed within 750,000 miles of Earth . Satellite photos released Monday showed small satellites orbiting the asteroid .
The asteroid was its closest on Monday morning , but the best viewing was Monday night . Asteroid 2004 BL86 passed within 750,000 miles of Earth . NASA photos released Monday show small moon orbiting the asteroid .