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Launch SuccessfulUnited States Air Force
Thor DM-21 Ablestar: Transit-O 1
The Transit-O series of satellites that closely followed the design of Transit 5C-1 were also called “Oscars” (Oscar is the phonetic alphabet for “O”, i. e., operational). They were also called NNS (Navy Navigation Satellite) or shortened NavSat.
Tuesday, 6 October 1964
Mission Data
🇺🇸United States Air ForceEst. 1947
Launch VehicleThor DM-21 Ablestar
Vehicle FamilyThor
Vehicle Record13 of 19 launches (68.4%)
Provider TypeGovernment
Agency Record972 successes / 106 failures (90%)
Success Streak68 consecutive
Mission TypeNavigation
Target OrbitPolar Orbit
Launch PadSpace Launch Complex 2W
Location🇺🇸 Vandenberg SFB, CA, USA USA
Orbital Launches This Year#73
Agency Launches This Year#41
Launches From This Pad99
Launches From This Site923
Status Note
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
About Thor DM-21 Ablestar
The Thor-Ablestar, or Thor Able-Star, also known as Thor-Epsilon was an early American expendable launch system consisting of a PGM-17 Thor missile, with an Ablestar upper stage. It was a member of the Thor family of rockets, and was derived from the Thor-Able.
Launch Site
Space Launch Complex 2W · 34.7556°N 120.6224°W
Launch data from Launch Library 2 by The Space Devs.