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(a,b) Filtered and real topography, respectively. Black lines are the median of the profiles. Elevations are computed with respect to the 482 × 482 × 446 km ellipsoid7,16. Distance is computed along the surface of the best ellipsoid. Topographic profiles are for increments of 15° in azimuth, starting from the center of the feature (133°, 21° N) (see Fig. 3). Black arrows indicated the position of the rims.
