• Don SpainEmail author
Part of the Astronomer's Pocket Field Guide book series (ASTROPOC)


Aristillus (33 miles) is over 2 miles deep. This is a fine crater to view at first quarter Moon. On the flat floor is a complex mountain mass that rise to a little over ½ mile. The walls are terraced and take note of the lines of ridges that radiate outward from the base of this formation.

Autolycus (24 miles) is just 24 miles south of Aristillus and these formations make a pretty pair. It is 2 miles deep and the floor is rough, but I see no sign of hills or peaks on the floor. The walls are terraced and on the northeast rim is a small crater, 2 miles in diameter.

Theaetetus (15 miles) is a little crater west of the Caucasus Mountains. It is 1½ miles from rim top to the flat floor.

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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Louisville Astronomical SocietyLouisvilleUSA

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