Stationed at 80 deg E. Investigation of outer space; experiments in relaying telegraph and telephone information in the centimetre wavelength range. Positioned in geosynchronous orbit at 80 deg E in 1982-1987 As of 4 September 2001 located at 81.31 deg E drifting at 0.033 deg E per day. As of 2007 Mar 11 located at 68.65E drifting at 0.023E degrees per day.

Stationed at 79 deg E. Investigation of outer space; experiments in relaying telegraph and telephone information in the centimetre wavelength range. Positioned in geosynchronous orbit at 80 deg E in 1984-1988 As of 28 August 2001 located at 75.35 deg E drifting at 0.041 deg E per day. As of 2007 Mar 10 located at 69.92E drifting at 0.020W degrees per day.

Stationed at 95 deg E. Experimental retransmission of telephone and telegraph data in the centimetre band. First launch in Altair/SR system for communication with Mir space station and other orbital spacecraft. First tests with Mir were conducted on 29 March 1986 using Mir's large aft antenna communicating with Cosmos 1700 stationed in geosynchronous orbit at 95 degrees East. In September 1986 Cosmos 1700 ceased operating and drifted off its geosynchronous orbit position. Positioned in geosynchronous orbit at 95 deg E in 1985-1986 As of 4 September 2001 located at 85.03 deg E drifting at 0.142 deg W per day. As of 2007 Mar 10 located at 76.37E drifting at 0.157E degrees per day.

Stationed at 13.5 deg W. Continuation of the investigation of outer space; experimental retransmission of telephone and telegraph data in the centimetre band. Positioned in geosynchronous orbit at 14 deg W in 1986-1989 As of 3 September 2001 located at 0.26 deg W drifting at 0.077 deg E per day. As of 2007 Mar 9 located at 55.28W drifting at 0.287W degrees per day.

Stationed at 80 deg E; later moved to 13.5 deg W. Communications experiments. Investigation of outer space; relaying of telephone and telegraph information. Positioned in geosynchronous orbit at 80 deg E in 1987-1990; 14 deg W in 1990-1994 As of 3 September 2001 located at 1.75 deg E drifting at 0.093 deg E per day. As of 2007 Mar 9 located at 68.17W drifting at 0.344W degrees per day.

Stationed at 95 deg E. Relaying of telephone and telegraph information. Second launch in Altair/SR system for communication with Mir space station and other orbital spacecraft. In late July 1988 Cosmos 1897 was moved from its station at 95 degrees East to 12 degrees East to support the Buran shuttle test flight of November 14, 1988. During February 1987 the satellite was moved back to its original position at 95 degrees East. The satellite drifted to 90 degrees East by March 1991. By late April it was maneuvered it back to 95 degrees East, but by the end of 1991 it had drifted to 77 degrees East and was considered inoperative. Positioned in geosynchronous orbit at 95 deg E in 1987-1988; 12 deg E in 1988-1989; 95 deg E in 1989-1992 As of 5 September 2001 located at 62.12 deg E drifting at 0.168 deg W per day. As of 2007 Mar 10 located at 94.48E drifting at 0.087E degrees per day.

Stationed at 13.5 deg W; later moved to 80 deg E. Investigation of outer space and relay of telegraph and telephone messages. Positioned in geosynchronous orbit at 14 deg W in 1988-1992; 80 deg E in 1992-1993. In September, 1993, Cosmos 1961 began drifting off station after a mission of five years had apparently been terminated. As of 4 September 2001 located at 80.01 deg E drifting at 0.015 deg W per day. As of 2007 Mar 11 located at 74.58E drifting at 0.039E degrees per day.

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. Positioned in geosynchronous orbit at 16 deg W in 1990-1997 As of 30 August 2001 located at 21.03 deg W drifting at 0.023 deg E per day. As of 2007 Mar 9 located at 68.57W drifting at 0.338W degrees per day.

Stationed at 80 deg E. Relaying of telegraph and telephone information. Positioned in geosynchronous orbit at 80 deg E in 1990-1994 As of 29 August 2001 located at 71.92 deg E drifting at 0.041 deg W per day. As of 2007 Mar 10 located at 79.57E drifting at 0.022W degrees per day.

Stationed at 13 deg W. Relaying of telegraph and telephone information. Positioned in geosynchronous orbit at 14 deg W in 1991-1995 As of 1 September 2001 located at 7.91 deg W drifting at 0.026 deg E per day. As of 2007 Mar 9 located at 39.91W drifting at 0.204W degrees per day.

Direct broadcasting satellite (new generation of satellites) intended for development of the Russian television system and international cooperation. Also tested SPT-100 plasma engine. Positioned in geosynchronous orbit at 71 deg E in 1994-1996; 36 deg E in 1996-1999; 42 deg E in 2000. As of 5 September 2001 located at 37.30 deg E drifting at 0.121 deg W per day. As of 2007 Mar 10 located at 67.44E drifting at 0.298E degrees per day.

Cosmos 2291 quickly moved to 80 degrees E, joining Cosmos 2085 as a replacement for Cosmos1961. Thus, at the end of 1994 the Potok constellation had been restored to its normal 4·sateellite complement: Cosmos 2085 and 2291 at 80 degrees E and Cosmos 1888 and 2172 at 13.5 degrees W. Cosmos 2291 continued at 80 deg E in 1994-1995; then it was moved to 14 deg W in 1995-1999 As of 6 September 2001 located at 62.64 deg W drifting at 0.324 deg W per day. As of 2007 Mar 10 located at 112.35W drifting at 0.417W degrees per day.

First launch of new Ekspress communications satellite. Replaces Gorizont series. Ekspress 1 reached its checkout location of 70 degrees E at the end of October 1994 and was moved to its operational position at 14 degrees W shortly after the start of 1995. Stationed at 14.00W in 1995-2001. As of 2007 March 10 located at 95.05E drifting at 1.636W degrees per day.

Stationed at 95 deg E. Relaying of telegraph and telephone information. Improved Altair/SR geosynchronous satellite for communication with Mir space station and other orbital spacecraft. Positioned in geosynchronous orbit at 95 deg E in 1994-1997; 16 deg W in 1997-1998 As of 4 September 2001 located at 143.35 deg W drifting at 0.319 deg E per day. As of 2007 Mar 9 located at 64.95W drifting at 0.320E degrees per day.

Stationed at 80 deg E. Relaying of telegraph and telephone information. Positioned in geosynchronous orbit at 80 deg E in 1995-1999 As of 31 August 2001 located at 16.12 deg W drifting at 0.037 deg W per day. As of 2007 Mar 5 located at 17.95W drifting at 0.052W degrees per day.

Stationed at 77 deg E. Relaying of telegraph and telephone information. Improved Altair/SR geosynchronous satellite for communication with Mir space station and other orbital spacecraft. Positioned in geosynchronous orbit at 77 deg E in 1995-1999 As of 2 September 2001 located at 75.63 deg E drifting at 0.029 deg W per day. As of 2007 Mar 10 located at 77.39E drifting at 0.002E degrees per day.

Three transponders for direct broadcast television. Stationed at 70 deg E. Used SPT-100 plasma engine. Positioned in geosynchronous orbit at 71 deg E in 1995-1996; 36 deg E in 1996-1999 As of 5 September 2001 located at 36.88 deg E drifting at 0.031 deg E per day. As of 2007 Mar 10 located at 62.06E drifting at 1.427W degrees per day.

GO Kosmicheskaya Svyaz geosynchronous communications satellite, to be assigned to the Ekspress 6A slot at 80E. Replaced the first Ekspress A, lost in a launch failure in 1999. Russian satellite bus with a ommunications payload from Alcatel France. Stationed at 80 deg E. Positioned in geosynchronous orbit at 80 deg E in 2000. As of 5 September 2001 located at 80.02 deg E drifting at 0.008 deg W per day. As of 2007 Mar 10 located at 102.77E drifting at 0.018W degrees per day.

Launch delayed from June 23. Geosynchronous communications satellite. Stationed at 11 deg W. Positioned in geosynchronous orbit at 11 deg W in 2000. As of 5 September 2001 located at 10.99 deg W drifting at 0.005 deg W per day. As of 2007 Mar 11 located at 11.00W drifting at 0.005E degrees per day.

Second flight using RD-0210 Phase 2 engines. Geizer military communications satellite. The Blok DM upper stage inserted the Geizer into geosynchronous orbit at 06:20 GMT on July 5. Stationed at 80 deg E. Positioned in geosynchronous orbit at 80 deg E in 2000. As of 6 September 2001 located at 79.81 deg E drifting at 0.014 deg E per day. As of 2007 Mar 10 located at 79.73E drifting at 0.022W degrees per day.

Launch delayed from May 2002. The Ekspress A1R Russian domestic communications satellite was built by NPO PM and Alcatel for Kosmicheskiya Svyaz, the Russian satcom operator. The Proton's parking orbit was off-nominal but the 11S861-01 Blok DM-2M upper stage corrected for this and delivered the payload to the correct orbit. Parking orbit was about 180 x 185 km x 51.6 deg; transfer orbit after the first DM-2M burn was 328 x 36133 km x 47.4 deg; orbit at spacecraft separation was 36102 x 36171 km x 0.2 deg. Two SOZ ullage motors were left in the transfer orbit. As of 2007 Mar 10 located at 14.07W drifting at 0.008W degrees per day.

Russian Satellite Communications Company spacecraft, to be stationed at 40 deg E, providing 28 C, Ku, and L band transponders for a wide range of communications and data services. The Ekspress-AM uses an improved Ekspress-M or 727M bus, first used on the Sesat satellite, while the earlier models used the KAUR-4 MSO-2500 bus. As of 2007 Mar 10 located at 39.98E drifting at 0.006W degrees per day.