| 词条 | Balmer (crater) | ||||||||||||||||||||||||||||
| 释义 |
| image = Balmer Crater.gif | image_size = 200px | caption = The lunar feature Balmer appears roughly in the center of the Clementine-derived image above. | coordinates = {{coord|20.1|N|70.6|E|globe:moon_type:landmark|display=inline,title}} | diameter = 112 km | depth = None | colong = 288 | eponym = Johann J. Balmer }} Balmer is the lava-flooded remains of a lunar impact crater. Only the heavily worn southern and eastern sections of the crater still survive; the remainder being overlaid by a lava flow that joins to the nearby mare. Balmer lies to the east-southeast of the crater Vendelinus. Satellite cratersBy convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Balmer.
References{{refbegin}}
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