Asteroid 2005 YU55 whisks through the field of view of Swift's Ultraviolet/Optical Telescope (UVOT) on Nov. 9, just hours after the space rock made its closest approach to Earth. The video plays on a background image from the Digital Sky Survey that shows the same region, which lies within the Great Square asterism of the constellation Pegasus (times UT).
NASA/Swift/Stefan Immler and DSS
<a href="//commons.wikimedia.org/wiki/File:Swift_Captures_Flyby_of_Asteroid_2005_YU55.webm" title="File:Swift Captures Flyby of Asteroid 2005 YU55.webm">Swift Captures Flyby of Asteroid 2005 YU55.webm</a>