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Jumpseat (satellite)
 
 
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Jumpseat, also known as AFP-711 is reportedly a code name for a class of SIGINT
SIGINT

Signals intelligence is list of intelligence gathering disciplines by interception of signals, whether between people or between machines , or mixtures of the two....
 reconnaissance satellites operated by the National Reconnaissance Office
National Reconnaissance Office

The National Reconnaissance Office , located in Chantilly, Virginia, is one of the U.S. intelligence community in the U.S. It designs, builds and operates the reconnaissance satellites of the United States government....
 for the United States Air Force
United States Air Force

The United States Air Force is the aerial warfare branch of the Military of the United States and one of the uniformed services of the United States....
 in the 1970s and 1980s. The program is classified, and much of the information in the open is speculative.

It is believed that 6 Jumpseat satellites were successfully launched from Vandenberg Air Force Base
Vandenberg Air Force Base

Vandenberg Air Force Base is a United States military installation with a spaceport, in Santa Barbara County, California, California, United States....
 on Titan IIIB
Titan III

The Titan IIIC was a space booster used by the United States Air Force. It was launched from Cape Canaveral Air Force Station, FL., and Vandenberg Air Force Base, CA....
 launch vehicles with Agena D
RM-81 Agena

The Agena was a rocket upper stage developed by Lockheed Corporation for the ill-fated WS-117L US reconnaissance satellite program. It lived on to see extensive use as the upper stage/spacecraft for the Corona spy satellite program and as an upper stage on the Thor , Atlas , and Titan boosters....
 boosters between 21 March 1971 and 31 July 1983.

The 700-kg Jumpseat satellites were manufactured by Hughes Aircraft
Hughes Aircraft

Hughes Aircraft Company was a major aerospace and defense company founded by Howard Hughes. The group was based near Ballona Creek, in Culver City, California....
 and were inserted into highly elliptical Molniya orbit
Molniya orbit

A Molniya orbit is a type of highly elliptical orbit with an inclination of 63.4 Degree s and an orbital period of about 12 hours. Molniya orbits are named after a series of Soviet Union/Russian Molniya communications satellites which have been using this type of orbit since the mid 1960s....
s with an inclination of 63 degrees and orbital periods of close to 12 hours. These were in similar orbits to the Satellite Data System
Satellite Data System

The Satellite Data System is a system of United States military communications satellites. At least three generations have been used: SDS-1 from 1976 to 1987; SDS-2 from 1989 to 1996; SDS-3 from 1998 to the present....
 relay satellites.

The successors to the Jumpseat series are the Trumpet
Trumpet (satellite)

TRUMPET, called Advanced Jumpseat by some observers, is reportedly a codename for a series of ELINT reconnaissance satellites launched by the United States during the 1990s to replace the Jumpseat satellites....
 satellites.

le class="wikitable">
Name Launch date Alt.






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Jumpseat, also known as AFP-711 is reportedly a code name for a class of SIGINT
SIGINT

Signals intelligence is list of intelligence gathering disciplines by interception of signals, whether between people or between machines , or mixtures of the two....
 reconnaissance satellites operated by the National Reconnaissance Office
National Reconnaissance Office

The National Reconnaissance Office , located in Chantilly, Virginia, is one of the U.S. intelligence community in the U.S. It designs, builds and operates the reconnaissance satellites of the United States government....
 for the United States Air Force
United States Air Force

The United States Air Force is the aerial warfare branch of the Military of the United States and one of the uniformed services of the United States....
 in the 1970s and 1980s. The program is classified, and much of the information in the open is speculative.

It is believed that 6 Jumpseat satellites were successfully launched from Vandenberg Air Force Base
Vandenberg Air Force Base

Vandenberg Air Force Base is a United States military installation with a spaceport, in Santa Barbara County, California, California, United States....
 on Titan IIIB
Titan III

The Titan IIIC was a space booster used by the United States Air Force. It was launched from Cape Canaveral Air Force Station, FL., and Vandenberg Air Force Base, CA....
 launch vehicles with Agena D
RM-81 Agena

The Agena was a rocket upper stage developed by Lockheed Corporation for the ill-fated WS-117L US reconnaissance satellite program. It lived on to see extensive use as the upper stage/spacecraft for the Corona spy satellite program and as an upper stage on the Thor , Atlas , and Titan boosters....
 boosters between 21 March 1971 and 31 July 1983.

The 700-kg Jumpseat satellites were manufactured by Hughes Aircraft
Hughes Aircraft

Hughes Aircraft Company was a major aerospace and defense company founded by Howard Hughes. The group was based near Ballona Creek, in Culver City, California....
 and were inserted into highly elliptical Molniya orbit
Molniya orbit

A Molniya orbit is a type of highly elliptical orbit with an inclination of 63.4 Degree s and an orbital period of about 12 hours. Molniya orbits are named after a series of Soviet Union/Russian Molniya communications satellites which have been using this type of orbit since the mid 1960s....
s with an inclination of 63 degrees and orbital periods of close to 12 hours. These were in similar orbits to the Satellite Data System
Satellite Data System

The Satellite Data System is a system of United States military communications satellites. At least three generations have been used: SDS-1 from 1976 to 1987; SDS-2 from 1989 to 1996; SDS-3 from 1998 to the present....
 relay satellites.

The successors to the Jumpseat series are the Trumpet
Trumpet (satellite)

TRUMPET, called Advanced Jumpseat by some observers, is reportedly a codename for a series of ELINT reconnaissance satellites launched by the United States during the 1990s to replace the Jumpseat satellites....
 satellites.

List of Launches

Name Launch date Alt. name COSPAR
COSPAR

The Committee on Space Research was established by the International Council for Science in 1958.Among COSPAR's objectives are the promotion of scientific research in outer space on an international level, with emphasis on the free exchange of results, information, and opinions, and providing a forum, open to all scientists, for the discus...
 ID
Jumpseat 1 21 March 1971 OPS 4788
failed Jumpseat launch 16 February 1972 OPS 1844, 1972-F01 failed to achieve orbit
Jumpseat 2 21 August 1973 OPS 7724
Jumpseat 3 10 March 1975 OPS 2439
Jumpseat 4 25 February 1978 OPS 6031
Jumpseat 5 13 December 1980 OPS 5805
Jumpseat 6 31 July 1983 OPS 7304


External links

  • from Jonathan's Space Report
    Jonathan's Space Report

    Jonathan's Space Report is a newsletter about the space age. It is written by Jonathan McDowell, a Harvard-Smithsonian Center for Astrophysics astrophysicist....