Minotaur IV HAPS – Orbital Sciences Corporation Family: Minotaur Length: 23.9 meters Diameter: 2.35 meters Launch Mass: 86 Low Earth Orbit Capacity: 1750 The Minotaur IV HAPS was manufactured by Orbital Sciences Corporation with the first launch on . Minotaur IV HAPS has 1 successful launches and 0 failed launches with a total of 1 launches. 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. Manufacturer Orbital Sciences Corporation is a Commercial USA entity that was founded in and is administered by . Orbital Sciences Corporation has 51 successful launches and 4 failed launches with a total of 55 launches.