| 词条 | Kerwan (crater) |
| 释义 |
|name = Kerwan |image = File:PIA19596-Ceres-DwarfPlanet-Dawn-2ndMappingOrbit-image28-20150625.jpg |caption = Kerwan crater. North is to the right. |type = Crater |location = Ceres |coordinates= {{coord|11.47|S|122.58|E|globe:ceres_type:landmark|display=inline,title}} |coordinates_footnotes = |diameter = 283.88 km |depth = ~5 km |eponym = Kerwan, Hopi spirit of the sprouting maize[1] }} Kerwan ({{IPAc-en|ˈ|k|ɜːr|w|ə|n}}) is the largest confirmed crater and geological feature on Ceres. It was discovered on February 19, 2015 from Dawn images as it approached Ceres. The crater is distinctly shallow for its size, and lacks a central peak. A central peak might have been destroyed by a 15-kilometer-wide crater at the center of Kerwan. The crater is likely to be old relative to the rest of Ceres's surface, as it is overlapped by nearly every other feature in the area. The crater is named after the Hopi spirit of sprouting maize, Kerwan. The name was approved by the IAU on July 3, 2015.[1] See also
References1. ^1 {{cite web|title=Planetary Names: Crater, craters: Kerwan on Ceres|url=http://planetarynames.wr.usgs.gov/Feature/15339|website=planetarynames.wr.usgs.go|publisher=IAU|accessdate=17 July 2015}} {{Ceres}} 2 : Impact craters on asteroids|Surface features of Ceres |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。