Kosmos 1686

Kosmos 1686
Kosmos 1686 (top) docked to Salyut 7, imaged by Range-Doppler radar.
Salyut program insignia
Station statistics
COSPAR ID1985-086A
SATCAT no.16095Edit this on Wikidata
Call signSalyut 7
Launch1985-09-27
02:01:00 UTC
Docked to Salyut 7 on 1985-10-02.
Launch padBaikonur 200/39
ReentryFebruary 7, 1991
Mass20,000 kg
Length15 m
Width16 m
Diameter4.15 m
Periapsis altitude219 km (118.25 nmi)
Apoapsis altitude278 km (150.1 nmi)
Orbital inclination51.6 degrees
Orbital period89.2 minutes
Orbits per day16.14
Days in orbit1959 days
Statistics as of deorbit & reentry
References:[1][2]
Configuration
Combined Kosmos 1686-Salyut 7 space station complex

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.

  1. ^ Cite error: The named reference n2yo was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference MHH was invoked but never defined (see the help page).