Viking
Viking Orbiter releasing the lander.jpg
Artist impression of a Viking orbiter releasing a lander descent capsule
ManufacturerJet Propulsion Laboratory / Martin Marietta
Country of originUnited States
OperatorNASA / JPL
ApplicationsMars orbiter/lander
Specifications
Launch mass3,527 kilograms (7,776 lb)
PowerOrbiters: 620 watts (solar array)
Lander: 70 watts (two RTG units)
RegimeAreocentric
Design lifeOrbiters: 4 years at Mars
Landers: 4–6 years at Mars
Dimensions
Production
StatusRetired
Built2
Launched2
RetiredViking 1orbiter
August 17, 1980
Viking 1lander
July 20, 1976 (landing) to November 13, 1982

Viking 2orbiter
July 25, 1978
Viking 2lander
September 3, 1976 (landing) to April 11, 1980
Maiden launchViking 1
August 20, 1975
Last launchViking 2
September 9, 1975