The launch was evidently scrubbed or failed. References: 17 .
Decree 5744-2162 'On creation of Second Chief Directorate of Council of Ministers to manage uranium mining' was issued. References: 474 .
First prototype of Asp (atmospheric sounding projectile) sounding rocket, capable of payloads up to 80 pounds, launched successfully at NAMTC at Point Mugu, Calif. References: 17 .
Decay date suspect Continued operation of the long-range telephone and telegraph radio-communication system within the Soviet Union and transmission of USSR central television programmes to stations in the Orbita and participating international networks (international cooperation scheme). References: 1 , 2 , 5 , 6 .
Believed to be a modernised version of the Taifun-1 satellite, built by NPO Yuzhnoe. The satellite carried 36 small Calibration Spherical Object subsatellites to test Russian radars. These were released between December 27, 1989 and November 1, 1991. While Cosmos 2053 re-entered in 1997, by May 1999 the S5M upper stage was still in a 471 km x 485 km x 73.5 deg orbit. An on-board explosion blew it into 25 new objects. References: 1 , 2 , 5 , 6 .
Stationed at 346 deg E. Relaying of telegraph and telephone information. The third Altair/SR geosynchronous satellite for communication with Mir space station and other orbital spacecraft. Combined with Cosmos 1897, it permitted Mir to maintain contact with Mission Control in Moscow 70% of the time. References: 1 , 2 , 5 , 6 , 67 , 274 .
Stationed at 49 deg E; second launch of alternate Raduga design. Further expansion of the long-range telephone and telegraph radio-communications system in the territory of the USSR. References: 1 , 2 , 5 , 6 , 67 , 274 .
Early warning satellite, carrying a large telescope to monitor missile launches. The payload and fourth stage were placed in an initial 229 km x 523 km x 62.8 deg orbit; the fourth stage (Block-2BL) fired over South America on the first orbit and delivered the payload to its 12-hour final orbit.