The Terrier-Orion was a two-stage, spin-stabilized sounding rocket. It used a Terrier Mk 12 Mod 1 engine for its first stage and an improved Orion motor for its second stage. The Terrier-Orion could loft payloads weighing up to 290 kilograms to altitudes up to 190 kilometers.
The Terrier Mk Mod 1 was a surplus U.S. Navy missile motor; Orion was a surplus U.S. Army missile motor.
NASA
Dimensions
Length: 10.7 m
Diameter: (Terrier) 46 cm, (Orion) 36 cm
Payload: 159 kg to 190 km or 290 kg to 115 km
First Firing: April 1994
Total Launches (14 May 1959 - 8 June 2006): 41