Minotaur IV
USA Wikipedia 
Built & Operated By
Orbital Sciences Corporation
Commercial
Family
Minotaur
variant HAPS · also Peacekeeper SLV
Maiden Flight
20 NOV 2010
About
The Minotaur IV HAPS launch system is derived from the Peacekeeper ICBM. The first three stages are taken directly from decommissioned Peacekeeper missiles. A fourth stage, the Orion-38, is taken from the Pegasus family of air-launched rockets. A fifth stage, consisting of a hydrazine-powered motor called HAPS, increases orbital insertion accuracy and allows additional orbital maneuvering.
Vehicle Specifications
Height
23.9 m
Diameter
2.35 m
Launch Mass
86 T
Thrust
2,200 kN
Stages
5
Configuration
Expendable
Launch Record
Total Launches
1
Successful
1
Failed
0
Consecutive
1
Performance
To LEO
1,750 kg
Apogee
500 km