Kosmos 2139Rocket launchby RussiaLaunch time4 Apr 199110:47:12 UTCsuccessOrbit: MEOSerial number: 354-02MissionRocketPayloadsRocket ProtonK/DM-2 8K82K/11S861launched from Baikonur Cosmodrome, Pad 200/39KazakhstanPayloadsNamePurposeMassCommentKosmos 2139 (Uragan #50L)Navigation--Kosmos 2140 (Uragan #53L)Navigation--Kosmos 2141 (Uragan #54L)Navigation--