Launch Success
Liftoff Time (GMT)
18:13:00
Monday May 23, 1977
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Canyon was a series of seven United States spy satellites launched between 1968 and 1977. Also known by its program number AFP-827, the satellites were developed with the participation of the Air Force. The Canyon project is credited as the first American satellite system tasked for COMINT.
Geostationary Transfer Orbit
1 Payload
700 kilograms
106th
Mission
1st
Mission of 1977
39th
Orbital launch attempt