| 词条 | Mechnikov (crater) | ||||||||||||||||||||||||||||
| 释义 |
| image = Mechnikov crater 1040 med.jpg | image_size = 240px | caption = Lunar Orbiter 1 image | coordinates = {{coord|11.0|S|149.0|W|globe:moon_type:landmark|display=inline,title}} | diameter = 60 km | depth = Unknown | colong = 149 | eponym = Il'ya I. Mechnikov }} Mechnikov is an impact crater on the far side of the Moon. It is located just to the northeast of the much larger walled plain Galois, being separated by a stretch of irregular terrain about 20–30 km in width. This is a roughly circular crater that has undergone a moderate amount of impact erosion, but is still relatively intact. Attached to the exterior along the northeast are the satellite craters Mechnikov C and Mechnikov D. There is a small crater in the western part of Mechnikov's interior floor. A small crater along the northeast rim of Galois has a small ray system. Ray material from this crater crosses the interior of Mechnikov in a series of streaks that are radial to the impact, producing a fan-like appearance. 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 Mechnikov.
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