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.
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.
Lockheed Martin's Space Division started in the production of missiles and later ICBM's in the 1950s. Their TITAN missile system was used for 12 Gemini spacecraft and the Voyager probes. They have worked largely in collaboration with NASA on many of their probes, landers, and spacecraft, and hope to play a key role in NASA's return to the moon in 2024.
INFO WIKIUnidentified classified satellites for the Russian military.
WorldView Legion is a constellation of Earth observation satellites built and operated by Maxar. Constellation is planned to consist of 6 satellites …
NS-29 will simulate the Moon’s gravity and fly 30 payloads, all but one of which is focused on testing lunar-related technologies. The payloads wi…
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
QZSS (Quasi Zenith Satellite System) is a Japanese satellite navigation system operating from inclined, elliptical geosynchronous orbits to achieve o…
A batch of 22 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
First of two new-generation satellites built by Airbus to provide secure communications to the Spanish government, its allies, and various internatio…
This is a replacement satellite for the Indian Regional Navigation Satellite System. The constellation will provide India with an alternative to GPS …
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 23 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.