This computation involved: DETAILS NEEDED - COMPUTATION CREATED FOR SATELLITE COMPOSITE. deployed on Landsat 7. Landsat 7 was launched as a continuation of the Landsat programme on 15th April 1999 and is still operational as of July 2014. A three-axis attitude control subsystem stabilizes the satellite and keeps the instrument pointed toward Earth to within 0.05 degrees. The LANDSAT World-Wide-Reference system catalogues the worlds land mass into 57,784 scenes, each 115 miles (183 kilometres) wide by 106 miles (170 kilometres) long.

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<div class="introduction">Introduction</div>
<p>Landsat 7 was launched as a continuation of the Landsat programme on 15th April 1999 and is still operational as of July 2014. A three-axis attitude control subsystem stabilizes the satellite and keeps the instrument pointed toward Earth to within 0.05 degrees. The LANDSAT World-Wide-Reference system catalogues the worlds land mass into 57,784 scenes, each 115 miles (183 kilometres) wide by 106 miles (170 kilometres) long. </p>
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