| 词条 | Omar Khayyam (crater) |
| 释义 |
| image = Normal omar-khayyam-clem1.jpg | image_size = 240px | caption = Clementine mosaic | coordinates = {{coord|58.0|N|102.1|W|globe:moon_type:landmark|display=inline,title}} | diameter = 70 km | depth = Unknown | colong = 104 | eponym = Omar Khayyám }} Omar Khayyam is a lunar impact crater that is located just beyond the northwestern limb of the Moon, on the far side from the Earth. It lies in a region of the surface that is sometimes brought into view of the Earth due to libration, and under favorable lighting it can be viewed from the edge. However under such circumstances not much detail can be seen, and the crater is best viewed from orbit. This feature is located at the western edge of the larger walled plain Poczobutt, and the northwestern rim of Omar Khayyam is overlain by the crater Zsigmondy. The east-southeastern part of the interior floor of Omar Khayyam is overlain by a smaller and younger crater. The remainder of the interior floor is split in half by a ridge attached to the western outer rim of this crater, giving Omar Khayyam the appearance of a formation composed of multiple merged impacts. The outer rim of Omar Khayyam is heavily eroded, and has a wide gap to the southeast. A small crater overlies the western rim, and multiple small craterlets mark the sides and parts of the interior. The floor to the southwest is somewhat smoother than elsewhere. This crater was named in honor of the Persian mathematician and astronomer Omar Khayyám. References{{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}} 2 : Impact craters on the Moon|Omar Khayyam |
| 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。