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Launch was a Partial FailureUnited States Air Force
Thor DM-21 Ablestar: Transit 3B & LOFTI-1
Failure:Failed to seperate from upper stage, failed to place into correct orbit.
Wednesday, 22 February 1961
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
Launch PadSpace Launch Complex 17B
Location🇺🇸 Cape Canaveral SFS, FL, USA USA
Orbital Launches This Year#7
Agency Launches This Year#4
Launches From This Pad132
Launches From This Site1,132
Status Note
Either the launch vehicle reached orbit but did not deliver its payload in the targeted orbit, or an exceptional event made it impossible to consider the mission a success.
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 17B · 28.4458°N 80.5657°W
Launch data from Launch Library 2 by The Space Devs.