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Viking 1

completedLaunch 1975-075
Launched 8/20/1975HEOService GSat EEO E
Admin Edit
Payloads
Assets deployed on this mission, enriched from spacecraft records.
2 payloads
Viking Lander 1
retired
Science Exploration
interplanetary
Viking Orbiter 1
retired
Science Explorationinterplanetary
Launch Details
Launch Date
8/20/1975
Launch ID
1975-075
Launch Profile
Sat EEO E
Service Type
G
Orbit
HEO
Launch Stack
Operator
NASA Glenn Research Center
Launch Vehicle
Titan IIIE
Launch Site
Space Launch Complex 41, Cape Canaveral (Cape Canaveral Air Station, Florida)US
Payload Summary
Payload Count
2
Payload Status
retired 2
Payload Mission Types
Science Exploration 2
Track
Mentions
1
All verified mentions of this mission in source documents.

RTGs powered Viking 1 and Viking 2 with 85 watts total, Pioneer 10 and Pioneer 11 with 165 watts total, and Cassini with three RTGs delivering 888 watts.

CapabilityValue 4.0Jul 13, 2026Atoms for space: Past US space nuclear power and propulsion programs