Steins getting closer (actual animation)

An animation of the closest approach of Rosetta to asteroid Steins, taken with the OSIRIS imaging system’s Wide Angle Camera. The image sequence starts 3 minutes before closest approach, from a distance of about 2000 km and ends 4 minutes after closest approach. At the start of the animation, the sun illuminated the asteroid from behind the spacecraft and no shadows are visible on the its surface. Later, the sunlight is incident from the left, and craters and more surface features become visible.