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What would be used for “coordinates” on a large asteroid?

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up vote 50 down vote favorite 3 Assuming we had a non-spherical asteroid that doesn't have a magnetic "north", how would the inhabitants define areas on the asteroid? How would they explain to a visitor to go to a very specific spot to retrieve or leave something besides "head over the hill sunward for 50 km" map-making asteroids share | improve this question edited Nov 30 at 0:57 kingledion 72.6k 26 244 429 asked Nov 30 at 0:33 TChris Gardner 251 2 4 ...