Salyut 1

Salyut 1 (DOS-1)

Salyut 1 as seen from the departing Soyuz 11
Station statistics
COSPAR ID	1971-032A
SATCAT no.	05160
Call sign	Salyut 1
Crew	3
Launch	April 19, 1971, 01:40:00 (1971-04-19UTC01:40) UTC[1]
Carrier rocket	Proton-K
Launch pad	Site 81/24, Baikonur Cosmodrome, Soviet Union
Reentry	October 11, 1971 (1971-10-12)
Mission status	De-orbited
Mass	18,425 kg (40,620 lb)
Length	~20 m (66 ft)
Diameter	~4 m (13 ft)
Pressurized volume	99 m3 (3,500 cu ft)
Perigee altitude	200 km (124 mi)
Apogee altitude	222 km (138 mi)
Orbital inclination	51.6 degrees
Orbital period	88.5 minutes
Days in orbit	175 days
Days occupied	24 days
No. of orbits	2,929
Distance traveled	118,602,524 km (73,696,192 mi)
Configuration
Soyuz docking with Salyut 1

Salyut 1 (DOS-1) (Russian: Салют-1) was the world's first space station launched into low Earth orbit by the Soviet Union on April 19, 1971. The Salyut program followed this with five more successful launches of seven more stations. The final module of the program, Zvezda (DOS-8), became the core of the Russian segment of the International Space Station and remains in orbit.

Salyut 1 was modified from one of the Almaz airframes, and was made out of five components: a transfer compartment, a main compartment, two auxiliary compartments, and the Orion 1 Space Observatory.

Salyut 1 was visited by Soyuz 10 and Soyuz 11. The hard-docking of Soyuz 10 failed and the crew had to abort this mission. The Soyuz 11 crew achieved successful hard docking and performed experiments in Salyut 1 for 23 days. However, they were killed by asphyxia caused by failure of a valve just prior to Earth reentry, and are the only people to have died above the Kármán line. Salyut 1's mission was later terminated, and it burned up on reentry into Earth's atmosphere on October 11, 1971.