Oblique view facing south fromApollo 15, while at the sunriseterminatorSimilar view from Apollo 15 before sunlight struck the west rim.
The rim of Seleucus is well-formed, with aterraced inner rim and a slightrampart. The floor is relatively flat, with a small central peak. A brightray fromGlushko crater, about 500 km to the southwest, grazes the southeastern rim of Seleucus.
The narrowness of the rim of Seleucus and the abrupt contact between its raised rim and the surroundingmare prove that the final mare flooding occurred after the crater was formed, and so the crater is older than the youngest (uppermost) mare basalts in the vicinity.[1]
Approximately 50 kilometers to the southeast of Seleucus, on the Oceanus Procellarum, is the landing site of theSoviet landing craftLuna 13.
Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU".Space Science Reviews.12 (2):136–186.Bibcode:1971SSRv...12..136M.doi:10.1007/BF00171763.S2CID122125855.