This image was acquired by Rosetta's OSIRIS imaging system and shows asteroid 21 Lutetia from a distance of 2 million km, rapidly decreasing, and was acquired by the Narrow Angle Camera of OSIRIS on 9 July 2010 at around 03:00 CEST. Rosetta is due to make closest approach at 18:10 CEST 10 July. This image was acquired as part of the optical navigation campaign, in which images acquired by the OSIRIS scientific imager and by Rosetta's on-board navigation cameras are being used to refine estimates of Lutetia's orbital trajectory.