- Thiessen (crater)
lunar crater data
latitude=75.4
N_or_S=N
longitude=169.0
E_or_W=W
diameter=66 km
depth="Unknown"
colong=173
eponym=Georg H. ThiessenThiessen is a lunar
impact crater that lies in the far northern latitudes, on the far side of theMoon . To the west of Thiessen is the younger Ricco crater, and to the south-southwest is Roberts crater. Further to the east lies Heymans crater.This is a heavily worn crater with overlapping impacts along the rim to the northeast, northwest, and west. A small crater occupies the northwestern interior floor. The remaining rim is worn and rounded, and the crater is now essentially a depression in the surface.
atellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Thiessen crater.
References
Wikimedia Foundation. 2010.