Aristoteles is an Eratosthenian aged (3.1 billion to 1.1 billion years old) crater located in the Northeast Quadrant of the Moon. At 53 km, it is very close to the size of it's younger brother Copernicus at 56 km, however, it lacks an extensive set of rays, a discriminating factor for younger Copernician (1.1 billion years to present) aged craters. The glacis around Aristoteles is arrayed with radial lineations of ejecta. These extend into the surrounding terrain for over a hundred kilometers from the craters center. On the southwest flank there appeared to be areas where melt had pooled. Little 31 kilometer Mitchell on Aristoteles' eastern slope is the older of the two, an Imbrium aged crater (between 3.65 and 3.2 billion years old). It seemed surprising to me that it had survived the Aristoteles impact.
Location: Jacumba, CA
Telescope: 12" Meade f/10
Binoviewer: W.O. Binoviewer w/1.6X nosepiece
Eyepieces: 20 mm W.O. Super Plossls
Time: 7:30pm to 8:30pm PST