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Landsat
World Reference
System
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The 16-day, 233-orbit cycle is the basis
of Landsat World Reference System. The
WRS is a grid of paths and rows overlaid
on a map of the Earth, with the paths representing
the ground track of the satellite. The
intersections of path and row – nominal
scene centres – are used to identify
Landsat images. Actual scene centres may
vary by as much as 250 m. The WRS is made
up of 233 paths numbered 001 to 233, east
to west, with Path 001 crossing the equator
at 64.60 degrees west longitude. Rows from
1 to 122 are the descending (day) passes,
while the others until 246 are the ascending
(night) ones.
Landsat 7 Scene 195/028
and adjacent scenes |
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Landsat scene sizes |
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