Magnum (satellite)


Magnum (satellite)

Magnum is the code name for a class of SIGINT spy satellites reportedly operated by the National Reconnaissance Office for the United States Central Intelligence Agency. The program remains classified, and the information that exists is speculative.

It is believed that two or three Magnum satellites were launched from space shuttle missions between 1985 and 1990: STS-51-C (1985), STS-33 (1989) and possibly from STS-38 (1990). The satellites reportedly have a mass of 2,200–2,700 kg (4,900–6,000 lb), operating in near-geosynchronous orbits, using Inertial Upper Stages to get from the shuttle's orbit to the higher geosynchronous orbit.[1] According to Jim Slade, ABC News, Magnum 2 (USA-48), launched on STS-33, was replacing Magnum 1 (USA-8), which after more than 4 years in orbit was running out maneuvering fuel required for keeping its station over the Indian Ocean. The mission of Magnum 1 and Magnum 2 was to listen in to military and diplomatic communications from the Soviet Union, China, and neighbouring countries.[2]

The Magnum satellites, built by TRW, are rumored to have large (estimated 100 m (330 ft) diameter)[3][4] umbrella-like reflecting dishes to collect RF signals from Earth. The Magnum/Orion satellites replaced the older Rhyolite/Aquacade series of SIGINT satellites, and have themselves been succeeded by the Mentor/Advanced Orion satellites.

Launches

  • Magnum 1, deployed from STS-51-C launched 24 January 1985, (COSPAR 1985-010B) (USA-8)
  • Magnum 2, deployed from STS-33 launched 23 November 1989,(COSPAR 1989-090B) (USA-48)
  • Magnum 3, deployed from STS-38 launched 15 November 1990,(COSPAR 1990-097B)(USA-67)(Some sources identify USA-67 as a SDS-2 military communications satellite)[5]

References

  • Richelson, Jeffrey T. ed. U.S. Military Uses of Space, 1945-1991 Vol 1, Guide. National Security Archive. 1991.

External links



Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Magnum — (from Latin: magnum, neuter (nominative singular) of magnus neutral form, meaning great) may refer to several things: Contents 1 Weaponry 1.1 Handguns …   Wikipedia

  • Magnum (Satellit) — Magnum ist der Codename für eine Reihe von SIGINT Aufklärungssatelliten des amerikanischen National Reconnaissance Office (NRO) der CIA . Durch den geheimen Charakter der Satelliten sind nur wenige Informationen verfügbar. Zwischen 1985 und 1990… …   Deutsch Wikipedia

  • Satellite de positionnement — Global Positioning System Pour les articles homonymes, voir GPS (homonymie). Le Global Positioning System plus connu par son sigle GPS, que l on peut traduire en français par « système de positionnement mondial » ou encore (en… …   Wikipédia en Français

  • Satellite Data System — The Satellite Data System (SDS) is a system of United States military communications satellites. At least two generations have been used: SDS 1 from July 1976 to November 1995, and SDS 2 from 1989 to the present. SDS satellites have a highly… …   Wikipedia

  • Mentor (satellite) — Mentor 4 (USA 202, 2009 001A) shows up as a magnitude +8 star in this image. Note how the real stars are trailed in this 10 second exposure: the geostationary satellite is pinpoint. Photograph by amateur satellite observer Marco Langbroek, the… …   Wikipedia

  • Moses Magnum — in court; art by Stephen Segovia and Marte Garcia Publication information Publisher …   Wikipedia

  • Vortex (satellite) — DNI depiction of a NRO SIGINT satellite Vortex, previously known as Chalet, is a class of spy satellite operated by the United States during the 1980s and 1990s to collect signals intelligence (SIGINT) from high Earth orbit. The Vortex satellites …   Wikipedia

  • Corona (satellite) — Discoverer redirects here. For the database software, see Oracle Discoverer. For the R.E.M. song, see Discoverer (song). KH 3 and KH3 redirect here. For the upcoming third game in the Kingdom Hearts series, see Kingdom Hearts (series). KH 4B… …   Wikipedia

  • Géopositionnement par satellite — Global Positioning System Pour les articles homonymes, voir GPS (homonymie). Le Global Positioning System plus connu par son sigle GPS, que l on peut traduire en français par « système de positionnement mondial » ou encore (en… …   Wikipédia en Français

  • Defense Meteorological Satellite Program — DMSP images of Auroral bands circling north of Scandinavia The Defense Meteorological Satellite Program (DMSP) monitors meteorological, oceanographic, and solar terrestrial physics for the United States Department of Defense. The program is now… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.