Zach 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 circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters ...

located in the heavily cratered southern sector of the Moon. To the north is the crater Lilius, while to the southeast is Pentland and to the south the larger Curtius. Due to foreshortening, the crater has an oblong appearance when viewed from

Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...

. The crater is in diameter and deep. It is from the

Nectarian The Nectarian Period of the lunar geologic timescale runs from 3920 million years ago to 3850 million years ago. It is the period during which the Nectaris Basin and other major basins were formed by large impact events. Ejecta from Nectaris for ...

period, 3.92 to 3.85 billion years ago.''Autostar Suite Astronomer Edition''. CD-ROM. Meade, April 2006. The inner walls of the crater are prominently

terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk a ...

d, while parts of the outer wall are indented by lesser craters. There are adjacent craters attached to the northeast, southwest, and southern parts of the rim. There is also a pair of overlapping craters on the northwest rim. The bottom is relatively flat with a few craterlets and a double central peak offset to the north. The crater is named for

Franz Xaver, Baron Von Zach Baron Franz Xaver von Zach (''Franz Xaver Freiherr von Zach''; 4 June 1754 – 2 September 1832) was a Hungarian astronomer born at Pest, Hungary (now Budapest in Hungary). Biography Zach studied physics at the Royal University of Pest, and s ...

, a 19th-century Hungarian astronomer.

Satellite craters

By convention, features are identified on lunar maps by placing the respective letter to the side of the crater midpoint closest to Zach:

References

{{Reflist

External links

Image from Google Moon
Impact craters on the Moon Nectarian