||This article contains orbital elements but does not include an epoch, or date when those elements, which typically vary over time, were correct.|
|Mission type||Optical imaging|
|Start of mission|
|Launch date||27 October 2005, 06:52:26UTC|
|Launch site||Plesetsk 132/1|
|Perigee||683 kilometres (424 mi)|
|Apogee||707 kilometres (439 mi)|
TopSat (Tactical Operational Satellite) is a British Earth observation satellite, currently in Low Earth Orbit. The nanosatellite was launched in October 2005 alongside the Beijing-1 Disaster Monitoring Constellation satellite by a Cosmos rocket from Plesetsk Cosmodrome in Russia.
TopSat carries out imaging with a ground resolution of 2.5 m. Much smaller and cheaper than other imaging satellites of similar high resolution, TopSat has been used to demonstrate the feasibility of providing images on demand to portable ground stations, such as that which might be deployed by the military or another disaster relief organisation.
TopSat was built in the United Kingdom by Surrey Satellite Technology Ltd, QinetiQ and The Rutherford Appleton Laboratory under the British National Space Centre Mosaic programme. The engineering model of TopSat now lives in the space gallery of London's Science Museum.
- New era of low-cost Earth observation dawns as first images received from TopSat, QinetiQ press release, 19 December 2005.
- Topsat project
- "TopSat". UK Space Agency. Retrieved 25 June 2012.
- Space.co.uk Transcript: Stuart Eves interviewed at the 2008 UK Space Conference
- Popular Science "Best of What's New" Grand Award, Science and Technology to TopSat.
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