 After visiting the EO-12 crew aboard the Mir space station the Progress T-15 then undocked and deployed the reflector from the end of the Russian Progress spacecraft on 4 February 1993, next to the Russian Mir space station.The mirror deployed successfully, and, when illuminated, produced a 5 km wide bright spot, which traversed Europe from southern France to western Russia at a speed of 8 km/h.The bright spot had a luminosity equivalent to approximately that of a full moon.