Kosmos 559Rocket launchby RussiaLaunch time18 May 197311:00 UTCsuccessMaiden flight of Soyuz-U 11A511U.MissionRocketPayloadsRocket SoyuzUlaunched from Plesetsk Cosmodrome, Pad 43/3RussiaPayloadsNamePurposeMassCommentKosmos 559 (Zenit-4MK)---