Minotaur IV Launches Classified Military Mission

A Northrop Grumman Minotaur IV successfully launched four National Reconnaissance Office (NRO) payloads on Wednesday morning.

The four-stage, solid-fuel booster was launched at 9:46 a.m. EDT from Pad 0B at the Mid-Atlantic Regional Spaceport on Wallops Island, Va.

The NROL-129 mission was the NRO’s 54th launch since 1996 and its first launch on a Minotaur IV. A Minotaur rocket last flew from Wallops in 2013.

Minotaur IV’s first three stages use solid rocket motors from decommissioned Peacekeeper intercontinental ballistic missiles. The commercial Orion 38 rocket motor is used as the fourth stage.

Minotaur IV is capable of launching payloads up to 1,730 kg (3,814 lb.) to low Earth orbit; The booster made its maiden flight in April 2010.