.
NASA photo. This linear string of 23 tiny craters runs from the midpoint of Davy Y towards the walled basin
Ptolemaeus, following a slightly curving course to the east-northeast. It is located at selenographic
coordinates 11.0° S, 7.0° W, and has a length of 50 km. This formation is not believed to be due to secondary cratering because it is not radial to a suitable source crater. The most likely cause is believed to be a single body that broke apart prior to impact due to tidal effects. High resolution images have demonstrated that the craters formed at about the same time since the
ejecta from each crater does not overlay neighboring craters. However, there are still some scientists who believe that this chain of craters may be
volcanic in origin. In 1974, six of the craters in the chain were given "unofficial" names for use in connection with NASA's Topophotomap 77D1S1(10). These names, listed below, were later adopted by the
IAU. Their positions in the chain are not readily distinguished based on their official
coordinates, but they are well identified on the topophotomap. Catena Davy was considered as a possible early
Apollo landing site. ==Satellite craters==