Orion is the designation of a small American elevator research rocket

Rocket

A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction...

. The Orion has a length of 5.60 meters, a diameter of 0.35 m, a launch weight of 400 kg, a launch thrust of 7 kN and a ceiling of 85 kilometers. The Orion, built by NASA Goddard Space Flight Center's Wallops Flight Facility

Wallops Flight Facility

Wallops Flight Facility , located on the Eastern Shore of Virginia, is operated by NASA’s Goddard Space Flight Center, primarily as a rocket launch site to support science and exploration missions for NASA and other U.S. government agencies...

, is also used as an upper stage of sounding rockets, usually paired with a Terrier as the first stage.