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Molniya-1K (11F658)

Molniya-1K [ISS Reshetnev]

The Molniya were Soviet communication satellites operating from an inclined highly elliptical earth orbit of 500 km × 40000 km with 12 hour period for coverage of high northern latitudes.

The Molniya satellites feature a unique configuration. The pressurized, three-axis stabilized KAUR-2 satellite bus features six non-articulated solar arrays and is operated in a sun-pointed mode. The antennas are mounted on two telescopic arms and are pointable. Each antenna features an optical tracking system which provides information to direct one of the two antennas to the Earth.

The KAUR-2 bus features the KDU-414 propellant system with the S5.31 engine. From 1974 onwards, it was replaced with the KDU-414A with the S5.114 engine in 1974. It is derived from the propulsion system of the Venera 1VA probes.

Molniya-1K for the military telecommunications network Korund carries the Beta communications payload consisting of 5 transponders. It uses wave tubes more reliable than those of Molniya-1's Alfa, which increases the design life of the satellite from one to two years.

Several satellites, beginning with Molniya-1 3, carried an additional earth observation payload called Berkut consisting of two TV cameras, initially black and white, later also colour. This payload was used for meteorology and also for preparation of a early warning system.

Nation: USSR
Type / Application: Communication
Operator:
Contractors: NPO Prikladnoi Mekhaniki (NPO PM)
Equipment:
Configuration: KAUR-2
Propulsion: KDU-414A (S5.114)
Power: 6 deployable solar arrays, batteries
Lifetime: 2 years
Mass: 1600 kg
Orbit: 500 km × 40000 km, 62.8 (typical)
Satellite COSPAR Date LS Launch Vehicle Remarks
Molniya-1K 26 (Molniya-1K 36L) 1973-097A 30.11.1973 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 30 (Molniya-1K 37L) 1975-049A 05.06.1975 Pl LC-41/1 Molniya-M (Blok-ML) with SRET 2 (MAS 2)
Molniya-1K 32 (Molniya-1K 40L) 1976-006A 22.01.1976 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 33 (Molniya-1K 39L) 1976-021A 11.03.1976 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 34 (Molniya-1K 42L) 1976-026A 19.03.1976 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 35 (Molniya-1K 43L) 1976-074A 23.07.1976 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 36 (Molniya-1K 41L) 1977-021A 24.03.1977 Pl LC-43/4 Molniya-M (Blok-ML)
Molniya-1K 37 (Molniya-1K 45L) 1977-054A 24.06.1977 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 38 (Molniya-1K 46L) 1977-082A 30.08.1977 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 39 (Molniya-1K 44L) 1978-024A 02.03.1978 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 40 (Molniya-1K 53L) 1978-055A 02.06.1978 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 41 (Molniya-1K 51L) 1978-072A 14.07.1978 Pl LC-43/4 Molniya-M (Blok-ML)
Molniya-1K 42 (Molniya-1K 50L) 1978-080A 22.08.1978 Pl LC-43/4 Molniya-M (Blok-ML)
Molniya-1K 43 (Molniya-1K 52L) 1979-031A 12.04.1979 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 44 (Molniya-1K 47L) 1979-070A 31.07.1979 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 45 (Molniya-1K 49L) 1979-091A 20.10.1979 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 46 (Molniya-1K 48L) 1980-002A 11.01.1980 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 47 (Molniya-1K 56L) 1980-053A 21.06.1980 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 48 (Molniya-1K 54L) 1980-092A 16.11.1980 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 49 (Molniya-1K 59L) 1981-009A 30.01.1981 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 50 (Molniya-1K 61L) 1981-060A 24.06.1981 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 51 (Molniya-1K 57L) 1981-113A 17.11.1981 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 52 (Molniya-1K 55L) 1981-123A 23.12.1981 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 53 (Molniya-1K 58L) 1982-015A 26.02.1982 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 54 (Molniya-1K 63L) 1982-050A 28.05.1982 Pl LC-43/3 Molniya-M (Blok-ML)
Molniya-1K 55 (Molniya-1K 62L) 1982-074A 21.07.1982 Ba LC-1/5 Molniya-M (Blok-ML)
Kosmos 1423 (Molniya-1K 60L) 1982-115A 08.12.1982 Ba LC-1/5 P Molniya-M (Blok-ML)
Molniya-1K 56 (Molniya-1K 65L) 1983-019A 16.03.1983 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 58 (Molniya-1K 66L) 1983-073A 19.07.1983 Ba LC-1/5 Molniya-M (Blok-ML)
Molniya-1K 59 (Molniya-1K 64L) 1983-114A 23.11.1983 Pl LC-41/1 Molniya-M (Blok-ML)
Molniya-1K 62 (Molniya-1K 67L) 1984-089A 24.08.1984 Pl LC-43/4 Molniya-M (Blok-ML)
Further Molniya missions: