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Landsat Missions

Download Definitive Ephemeris for Landsat 7 and Landsat 5

Definitive Ephemeris is used for geometrically correcting Landsat data, and provides improved accuracy over predicted ephemeris. More details on Definitive Ephemeris can be found at http://landsat.usgs.gov/what_is_definitive_ephemeris.php.

Definitive Ephemeris files are available two days after acquisition, and can be accessed by choosing one of the options below:

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URL: http://landsat.usgs.gov
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Page Last Modified: 01/16/13 01:31 pm
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