Landsat 7

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Landsat 7
Landsat 7
Type: Earth observation satellite
Country: United StatesUnited States United States
Operator: National Aeronautics and Space AdministrationNASA NASA
Mission dates
Begin: January 25, 1999
Starting place: Western Test Range
Vandenberg Air Force Base
Launcher: Delta II
Status: active
Orbit data
Rotation time : 99 min
Orbit inclination : 98.2 °
Apogee height :  698 km
Perigee height :  669 km
Eccentricity : 0.002050

Landsat 7 is launched on 15 April 1999 Earth observation satellite, the US air and space agency NASA . The satellite is the seventh in the line of Landsat satellites. It is equipped with the multispectral sensor ETM + , the resolution of which has been severely limited since 2003 due to a mechanical problem.

Landsat 7 is part of the Earth Observing System (EOS), a long-term research program of NASA that encompasses several missions .

Most of the earth's surface at NASA World Wind and online map portals such as B. Google Maps (Earth), MSN Maps or Yahoo Maps is represented by processed Landsat 7 satellite images.

Orbit

The satellite moves in a polar , sun-synchronous earth orbit (SSE). A characteristic of this orbit is that the satellite passes one point on Earth at the same time every day. Therefore, such earth orbits are often used for meteorological satellites and earth observation satellites .

See also

Web links