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Meteors, Asteroids and Comets
Comparing topographic maps of the giant asteroid Vesta
09/30/13

 

These two images compare topographic maps of the giant asteroid Vesta as discerned by NASA's Hubble Space Telescope (top) and as seen by NASA's Dawn spacecraft (bottom). Hubble has been in an orbit around Earth, while Dawn orbited Vesta from 2011 to 2012. Although the absolute scale ranges are slightly different in Dawn data, Vesta’s relative topography is remarkably consistent between the two data sets. The relative topography in Hubble data varies from 7.5 miles (12 kilometers) below to 7.5 miles (12 kilometers) above a reference ellipsoid shape of 180 by 174 by 142 miles (289 by 280 by 229 kilometers). The relative topography in Dawn data varies from 14 miles (22 kilometers) below to 12 miles (19 kilometers) above a reference ellipsoid shape of 177 by 177 by 142 miles (285 by 285 by 229 kilometers). Credit: NASA/ESA/Cornell and NASA/JPL-Caltech/UCLA/MPS/DLR/IDA



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