| 词条 | Darwin (lunar crater) | ||||||||||||||||||||||||||||
| 释义 |
| image = Darwin crater 4168 h1 h2.jpg | image_size = 240px | caption = Lunar Orbiter 4 image | coordinates = {{coord|19.8|S|69.1|W|globe:moon_type:landmark|display=inline,title}} | diameter = 120 km | depth = Unknown | colong = 70 | eponym = Charles R. Darwin }} Darwin is a lunar impact crater of the type categorised as a walled plain. It lies in the southeastern part of the Moon, and is sufficiently close to the limb to appear significantly foreshortened when viewed from the Earth. Attached to its southern rim is Lamarck. To the northeast is the dark-floored crater Crüger. The outer rim of this formation has been significantly disintegrated by the nearby impacts. The southern and northern parts of the rim in particular are all but destroyed. The eastern rim is somewhat worn but intact, and several small craters lie along the southwestern rim. The satellite crater Darwin B, a fairly large formation with a diameter of 56 kilometers, is attached to the outer western rim. Parts of the interior floor of Darwin have been resurfaced. The southern floor of Darwin is only roughly level, with irregular surface features and several small craters. There is a dune-like set of hills in the northeast part of the floor, which is "decelerated surface-flow ejecta" from the Orientale basin impact that struck the eastern rim.[1] In the western floor is a large, low, somewhat irregular dome, one of the few such features not found on a mare. There is also the remnant of a small crater at the southern end of the floor. A system of rilles cut across the northern part of the floor, crossing the eastern rim and continuing to the southeast. These rilles are designated the Rimae Darwin, and they stretch for a distance of about 280 kilometers. To the east of Darwin, this system of rilles crosses Rima Sirsalis, a wide rille that follows a line to the northeast. 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 Darwin.
References1. ^The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348. ([https://pubs.er.usgs.gov/publication/pp1348 online]), Figure 7.8 {{refbegin}}
| last1 = Andersson | first1 = L. E. | last2 = Whitaker | first2 = E. A. | authorlink2 = Ewen Whitaker | date = 1982 | title = NASA Catalogue of Lunar Nomenclature | publisher = NASA RP-1097 | ref = harv
| last = Blue | first = Jennifer | date = July 25, 2007 | title = Gazetteer of Planetary Nomenclature | publisher = USGS | url = http://planetarynames.wr.usgs.gov/ | accessdate = 2007-08-05 | ref = harv
| last1 = Bussey | first1 = B. | authorlink1 = Ben Bussey | last2 = Spudis | first2 = P. | authorlink2 = Paul Spudis | date = 2004 | title = The Clementine Atlas of the Moon | publisher = Cambridge University Press | location = New York | isbn = 978-0-521-81528-4 | ref = harv
| last1 = Cocks | first1 = Elijah E. | last2 = Cocks | first2 = Josiah C. | date = 1995 | title = Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature | publisher = Tudor Publishers | isbn = 978-0-936389-27-1 | ref = harv
| last = McDowell | first = Jonathan | date = July 15, 2007 | url = http://host.planet4589.org/astro/lunar/ | title = Lunar Nomenclature | publisher = Jonathan's Space Report | accessdate = 2007-10-24 | ref = harv
| first = Patrick | last = Moore | authorlink = Patrick Moore | date = 2001 | title = On the Moon | publisher = Sterling Publishing Co. | isbn = 978-0-304-35469-6 | ref = harv
| first = Fred W. | last = Price | date = 1988 | title = The Moon Observer's Handbook | publisher = Cambridge University Press | isbn = 978-0-521-33500-3 | ref = harv
| last = Rükl | first = Antonín | authorlink = Antonín Rükl | date = 1990 | title = Atlas of the Moon | publisher = Kalmbach Books | isbn = 978-0-913135-17-4 | ref = harv
| last = Webb | first = Rev. T. W. | authorlink = Thomas William Webb | date = 1962 | title = Celestial Objects for Common Telescopes | edition = 6th revised | publisher = Dover | isbn = 978-0-486-20917-3 | ref = harv
| first = Ewen A. | last = Whitaker | authorlink = Ewen Whitaker | date = 1999 | title = Mapping and Naming the Moon | publisher = Cambridge University Press | isbn = 978-0-521-62248-6 | ref = harv
| first = Peter T. | last = Wlasuk | date = 2000 | title = Observing the Moon | publisher = Springer | isbn = 978-1-85233-193-1 | ref = harv{{refend}} External links
1 : Impact craters on the Moon |
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