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Title: Usa-200  
Author: World Heritage Encyclopedia
Language: English
Subject: TWINS, List of NRO Launches, USA-184, Trumpet (satellite), THEOS (satellite)
Collection: National Reconnaissance Office Satellites, Spacecraft Launched in 2008, USA Satellites
Publisher: World Heritage Encyclopedia


Mission type ELINT
Operator US NRO
COSPAR ID 2008-010A
SATCAT № 32706
Start of mission
Launch date 13 March 2008, 10:02 (2008-03-13T10:02Z) UTC
Rocket Atlas V 411 AV-006
Launch site Vandenberg SLC-3E
Orbital parameters
Reference system Geocentric
Regime Molniya
Perigee 1,111 kilometres (690 mi)[1]
Apogee 37,580 kilometres (23,350 mi)[1]
Inclination 63.5 degrees[1]

USA-200, also known as NRO Launch 28 or NROL-28, is an American signals intelligence satellite, operated by the National Reconnaissance Office. Launched in 2008, it has been identified as the second satellite in a series known as Improved Trumpet, Advanced Trumpet, or Trumpet follow-on; a replacement for the earlier Trumpet series of satellites.[2]

The infrared image of a Delta II rocket launch, captured by SBIRS-HEO sensors aboard USA-200.

USA-200 was launched by an Atlas V carrier rocket, flying in the 411 configuration, operated by United Launch Alliance. The rocket was the first Atlas V to launch from Vandenberg Air Force Base, flying from Space Launch Complex 3E.[3] Liftoff occurred at 10:02 UTC (03:02 PDT) on 13 March 2008.[4][5] It was identified as NRO Launch 28,[6] and was the thirteenth flight of an Atlas V. The rocket had the tail number AV-006.[4]

The satellite's orbit and mission are officially classified, however like most classified spacecraft it has been located and tracked by amateur observers. It is in a Molniya orbit with a perigee of 1,111 kilometres (690 mi), an apogee of 37,580 kilometres (23,350 mi), and 63.5 degrees of inclination.[1] In addition to its SIGINT payload, USA-200 also carries two secondary instruments; the SBIRS-HEO-2 missile detection payload as part of the Space-Based Infrared System programme, and NASA's TWINS-2 or TWINS-B magnetospheric science instrument as part of the TWINS programme.[2]


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