Vallis Planck is a long, linear valley located on the
far side 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 ...
. It is oriented
radial
Radial is a geometric term of location which may refer to:
Mathematics and Direction
* Vector (geometric), a line
* Radius, adjective form of
* Radial distance (geometry), a directional coordinate in a polar coordinate system
* Radial set
* A ...
ly to the huge
Schrödinger basin, and was most likely formed by that impact. The
selenographic coordinates
The selenographic coordinate system is used to refer to locations on the surface of Earth's moon. Any position on the lunar surface can be referenced by specifying two numerical values, which are comparable to the latitude and longitude of Earth ...
of this feature are , and it has a length of 451 km.
This cleft in the surface crosses the western part of the huge walled plain
Planck
Max Karl Ernst Ludwig Planck (; ; 23 April 1858 – 4 October 1947) was a German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918.
Planck made many substantial contributions to theoretical p ...
, and it was named after that feature (which has an
eponym
An eponym is a noun after which or for which someone or something is, or is believed to be, named. Adjectives derived from the word ''eponym'' include ''eponymous'' and ''eponymic''.
Eponyms are commonly used for time periods, places, innovati ...
of
Max Planck
Max Karl Ernst Ludwig Planck (; ; 23 April 1858 – 4 October 1947) was a German Theoretical physics, theoretical physicist whose discovery of energy quantum, quanta won him the Nobel Prize in Physics in 1918.
Planck made many substantial con ...
). The southern edge closest to Schrödinger begins near the northeastern outer rampart of the crater
Grotrian. It then continues to the north-northwest, where it suffers a disruption where it crosses the crater
Fechner. The remainder of the feature continues to the northwestern outer rim of the walled plain Planck, until terminating near
Pikel'ner K.
References
* http://www.planetenkunde.de/p012/p01204/p01204180008.htm
Planck, Vallis
{{Valleys on the Moon