Soyuz 35

Soyuz 35
OperatorSoviet space program
COSPAR ID1980-027A Edit this at Wikidata
SATCAT no.11753
Mission durationCapsule:
55 days, 1 hour and 28 minutes
Original crew:
184 days, 20 hours, 11 minutes
Spacecraft properties
Spacecraft typeSoyuz 7K-T
ManufacturerNPO Energia
Launch mass6,800 kg (15,000 lb)
Crew
Crew size2
LaunchingLeonid Popov
Valery Ryumin
LandingValery Kubasov
Bertalan Farkas
CallsignДнепр (DneprDnieper)
Start of mission
Launch dateApril 9, 1980, 13:38:22 (1980-04-09UTC13:38:22Z) UTC
RocketSoyuz-U
Launch siteBaikonur 31/6
End of mission
Landing dateJune 3, 1980, 15:06:23 (1980-06-03UTC15:06:24Z) UTC
Landing site180 km (110 mi) SE of Dzhezkazgan
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude198 km (123 mi)
Apogee altitude259.7 km (161.4 mi)
Inclination51.65 degrees
Period88.81 minutes
Docking with Salyut 6[1]
Docking portFront
Docking dateApril 10, 1980, 15:15:32 UTC
Undocking dateJune 3, 1980, 11:50 UTC
Time docked53 days, 20 hours and 34 minutes

Soviet stamp featuring Popov and Ryumin (1981)

Soyuz 35 (Russian: Союз 35, Union 35) was a 1980 Soviet crewed space flight to the Salyut 6 space station. It was the 10th mission to and eighth successful docking at the orbiting facility. The Soyuz 35 crew were the fourth long-duration crew to man the space station.[1]

Cosmonauts Leonid Popov and Valery Ryumin spent 185 days in space, setting a new space endurance record. Ryumin had completed a previous mission only eight months before. They hosted four visiting crews, including the first Hungarian, Cuban and Vietnamese cosmonauts.

As long-duration crews now routinely swapped spacecraft with incoming crew, the Soyuz 35 craft was used to return the visiting Soyuz 36 crew to Earth, while the resident crew returned in Soyuz 37.

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