GeoHack - Tô Ngọc Vân (hố va chạm)

Tô Ngọc Vân (hố va chạm)
Coordinates on Mercury 52° 29′ 24″ N, 111° 42′ 0″ W  (52.49°, -111.7°) Type landmark Zoom 8


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Longitude[sửa]

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[sửa]

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

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