 An uncontrolled re-entry of this satellite occurred on 26 July 2012.Since summer 2010, another of the SAR satellites, IGS 4B has also been unable to carry out its monitoring functions.Japan launched IGS-Optical 7 reconnaissance satellite from the Tanegashima Space Center, 9 February 2020 aboard an H-2A rocket after a 12-day delay caused by a nitrogen leak.