Alter W (Moon)

Satellite Feature of Alter

Named after Dinsmore Alter - American astronomer, meteorologist (1888-1968).

Alter is a lunar impact crater that is located in the northern hemisphere on the far side. It lies to the southwest of the larger crater Robertson, and to the east of Ohm. The outer rim has been degraded by subsequent erosion, most notably at the northern and southern extremes. There is a small crater lying across the south-southeast rim. (wikipedia entry)