Tsander is a large

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 ...

on the

far side ''The Far Side'' is a single-panel comic created by Gary Larson and syndicated by Chronicle Features and then Universal Press Syndicate, which ran from December 31, 1979, to January 1, 1995 (when Larson retired as a cartoonist). Its surrealis ...

of the

Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...

. Attached to the southeastern outer rim is the younger crater Kibal'chich. To the northwest lies

Dirichlet Johann Peter Gustav Lejeune Dirichlet (; ; 13 February 1805 – 5 May 1859) was a German mathematician. In number theory, he proved special cases of Fermat's last theorem and created analytic number theory. In Mathematical analysis, analysis, h ...

, and to the northeast lies Artem'ev. This is a heavily worn crater formation with an outer rim that has been rendered into an uneven, somewhat circular range due to impact erosion. There is a significant outward bulge along the rim edge to the south-southwest. A smaller crater lies across the rim to the west-northwest. The interior floor has low ridges and uneven areas most likely as the result of large deposits of ejecta. There is a cluster of small craters near the midpoint of the interior, and the worn remains of a pair of older impacts in the north and west. Tsander lies to the southeast of the Dirichlet-Jackson Basin. This crater takes its name from the Cyrillic rendering of

Friedrich Zander Georg Arthur Constantin Friedrich Zander (also Tsander, , Romanization of Russian, tr. ; , – 28 March 1933), was a Baltic German pioneer of rocketry and spaceflight in the Russian Empire and the Soviet Union. He designed the first liquid rock ...

, an early developer of

rocket engine A rocket engine is a reaction engine, producing thrust in accordance with Newton's third law by ejecting reaction mass rearward, usually a high-speed Jet (fluid), jet of high-temperature gas produced by the combustion of rocket propellants stor ...

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 Tsander.

References

* * * * * * * * * * * * {{refend Impact craters on the Moon