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A image of the US overlaid with lines and dots showing the worldwide reference system.

Worldwide reference system

The conterminous US portion of the worldwide reference system-1, or WRS-1. In WRS-1 the Washington, DC scene falls on Path 16 Row 33. When Landsat 4 launched, a WRS-2 was implemented because of the orbital change from 917 km (for Landsats 1–3) to 705 km for Landsats 4–8.

Image Credit: L. Rocchio, adapted from ASPRS
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