Loran C chain GRI 7980 in the southeastern United States, comprising master station M and slave stations W, X, Y, and Z. A position fix is shown at point A, where the lines of position 7980-Y-45000 and 7980-Z-61000 intersect.
Vesta topography shown as color-contoured Mollweide projection. Topography in kilometers (scale bar at bottom) is calculated relative to a reference ellipsoid of 285 × 285 × 229 km (177 × 177 × 142 mi). (Credit: F. Preusker, German Aerospace Center)