Kosmos 1686
Station statistics
Salyut 7
1985-09-27
02:01:00 UTC
Docked to Salyut 7 on 1985-10-02.
February 7, 1991
20,000 kg
Length
15 m
Width
16 m
Diameter
4.15 m
219 km (118.25 nmi)
278 km (150.1 nmi)
51.6 degrees
89.2 minutes
Orbits per day
16.14
Days in orbit
1959 days
Configuration
Kosmos 1686 (Russian: Космос 1686 meaning Cosmos 1686), also known as TKS-4, was a heavily modified TKS spacecraft which docked unmanned to the Soviet space station Salyut 7 as part of tests to attach scientific expansion modules to stations in Earth orbit. The module which docked to the station was the FGB component of a TKS vehicle launched on September 27, 1985, and was designed to test systems planned for use on the Mir Core Module. The spacecraft docked with Salyut 7 on October 2, 1985, during the long-duration stay of the cosmonauts of its fifth principal expedition, which arrived on Soyuz T-14.[2] It was the last flown TKS spacecraft.
Successors
Support craft
Lists
Related
Functional Cargo Block (FGB)
derived hardware
January
February
March
April
May
June
July
August
September
October
November
Unknown
month
Payloads are separated by bullets ( · ), launches by pipes ( | ). Crewed flights are indicated in underline. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in (brackets).