Thor DM-21 Ablestar
Thor familyUnited States Air ForceRetired
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.

Specifications
- Thrust
- 760 kN
- Height
- 29 m
- Diameter
- 1.44 m
- Launch mass
- 51 t
- Stages
- 2
- LEO capacity
- 150 kg
Specifications from Launch Library. Figures the operator has not published are omitted.
Flight record
19flightswith a definitive outcome
68.4%success rate13 of 19
5success streakcurrent
Counted from padside's own launch record, the same basis as the stats page.