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Launch SuccessfulUnited States Air Force
Thor Delta C1: OSO 4
OSO (Orbital Solar Observatory) satellite. Its purpose was to return data on the ultraviolet, X-ray and gamma ray emissions of the sun and galaxy.
Wednesday, 18 October 1967
Thor Delta C1
Mission Data

🇺🇸United States Air ForceEst. 1947
Launch VehicleThor Delta C1
Vehicle FamilyThor
Vehicle Record3 of 3 launches (100%)
Provider TypeGovernment
Agency Record972 successes / 106 failures (90%)
Success Streak68 consecutive
Mission TypeAstrophysics
Target OrbitLow Earth Orbit
Launch PadSpace Launch Complex 17B
Location🇺🇸 Cape Canaveral SFS, FL, USA USA
Orbital Launches This Year#112
Agency Launches This Year#51
Launches From This Pad132
Launches From This Site1,132
Status Note
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
About Thor Delta C1
American orbital launch vehicle family with Thor first stage and a delta second stage.
Launch Site
Space Launch Complex 17B · 28.4458°N 80.5657°W
Launch data from Launch Library 2 by The Space Devs.