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NROL-4

Titan 401A Centaur

United States Air Force

Launch Status
Success

Mission


NROL-4 (Trumpet 3)

  • Type: Government/Top Secret
  • Orbit: Geostationary Orbit

Trumpet signal intelligence satellites were launched by Titan-4(01)A Centaur-T into highly elliptic Molniya-type orbits. In their elliptical orbits they would move very slowly over the northern hemisphere for most of their orbital period, allowing interception of microwave line-of-sight communications beams. Since they would move slowly through the beams during their orbit, a constellation of such satellites was required to monitor Soviet communications throughout the day.

NROL-4 (Trumpet 3)

Location


Space Launch Complex 41

Cape Canaveral, FL, USA

Space Launch Complex 41 has witnessed the launch of 111 rockets, including 111 orbital launch attempts, while Cape Canaveral, FL, USA, has been the site for 937 rocket launches.

Space Launch Complex 41

Rocket


Lockheed Martin Titan 401A Centaur

Titan IV was a family of heavy-lift space launch vehicles developed by Martin Marietta and operated by the United States Air Force from 1989 to 2005.

Agency


United States Air Force

The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947.

United States Air Force
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