GeoHack - Simeiz Vallis

Simeiz Vallis
Coordinates on Mercury 13° 12′ 0″ S, 64° 18′ 0″ W  (-13.2°, -64.3°) Type landmark Zoom 8


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Longitude

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Longitude on Mercury increases in the westerly direction. A small crater named Hun Kal provides the reference point for measuring longitude. By definition, the center of Hun Kal is 20° west longitude.[1]

References

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  1. ^ "USGS Astrogeology: Rotation and pole position for the Sun and planets (IAU WGCCRE)". Retrieved 22 October 2009.

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