Delaunay is a
lunar
Lunar most commonly means "of or relating to the Moon".
Lunar may also refer to:
Arts and entertainment
* ''Lunar'' (series), a series of video games
* "Lunar" (song), by David Guetta
* "Lunar", a song by Priestess from the 2009 album ''Prior t ...
impact crater
An impact crater is a depression (geology), depression in the surface of a solid astronomical body formed by the hypervelocity impact event, impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal c ...
. It was named after French astronomer
Charles-Eugène Delaunay
Charles-Eugène Delaunay (; 9 April 1816 – 5 August 1872) was a French astronomer and mathematician. His lunar motion studies were important in advancing both the theory of planetary motion and mathematics.
Life
Born in Lusigny-sur-Barse ...
.
The craters
La Caille to the southwest and
Faye to the northeast border on the outer rim of Delaunay. Further to the northwest is the prominent
Arzachel.
This is an irregular crater formation that has an interior ridge running from the northeast side that divides the crater nearly in half, and gives it a heart-shaped appearance. This ridge grows increasingly slender as it approaches the southwest rim, until it terminates at sharp point, giving it the appearance of a curved fang. The outer rim of this crater is equally irregular, and the uneven inner wall varies significantly in width. The southern rim has been heavily damaged by impacts, including La Caille E which intrudes into the interior.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Delaunay.
References
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External links
Delaunay at The Moon Wiki
Impact craters on the Moon
{{moon-crater-stub