Near Earth Asteroid 2011 MD narrowly misses Earth Dramatic video by Andre Paquette shows the brightness of Asteroid 2011 MD oscillating as it races among the stars. The video contains 1058 frames of 2s each, taken with a 14" SCT @ F/1.9 and a QSI 583 video camera. You can see the asteroid's brightness undulating up and down, suggesting rotation. The asteroid flew past Earth on Monday, June 27th. At closest approach the space rock the size of a house was only 12,000 kilometers above Earth's surface.