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Vallis Planck is a long, linear valley located on the far side of the
Moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ...
. 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, a directional coordinate in a polar coordinate system * Radial set * A bearing f ...
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 person, a place, or a thing after whom or which someone or something is, or is believed to be, named. The adjectives which are derived from the word eponym include ''eponymous'' and ''eponymic''. Usage of the word The term ''epon ...
of
Max 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 ...
). 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