(unofficial name; IAU crater name: Planck; 314 km diam)
|Lat: 57.9°S, Long: 136.8°E, Main ring diam: 325 km, Depth: 4.0 km, Rükl: (farside)|
Left: Clementine, Right: Clementine, Clementine LIDAR Altimeter texture from PDS Map-a-Planet remapped to north-up aerial view by LTVT. The dot is the center position and the white circle the main ring position from Chuck Wood's Impact Basin Database. Grid spacing = 10 degrees.
(description of terms and most numeric basin data from Wood, C.A. (2004) Impact Basin Database)
|Certainty of Existence
||Wilhelms Age Group
||160, 325 km
- The IAU crater name honors Max Karl Ernst Ludwig Planck (April 23, 1858 – October 4, 1947), a German physicist and Nobel laureate. He is considered to be the founder of quantum theory, and therefore one of the most important physicists of the twentieth century. Planck was among the few who immediately recognized the significance of the special theory of relativity. Thanks to his influence this theory was soon widely accepted in Germany. Planck also contributed considerably to extend the special theory of relativity.
- The impact basin is named after the crater.
- This name Planck was introduced into lunar nomenclature in the Rectified Lunar Atlas (1963), based on Earth-based photos of the libration zones. It was there assigned to a 78 km diameter crater centered at 87.0° W/ 8.0° N. That assignment was approved by the IAU in 1964.
- In preparing the list of farside names using space-based overhead photography, the IAU Working Group for Lunar Nomenclature was unable to find evidence of a significant crater at that location, and chose to delete the 1964 approval and re-assign the name to the present crater (Menzel, 1971).
- On the greyish light-blue farside map of Patrick Moore's Atlas of the Universe (edition 1970), the name Planck (and also the name Fermi) was printed at the Rectified Lunar Atlas location, near craters Bohr and Sundman). Research Danny Caes.
- What appears to be an officially unnamed large crater northwest of Planck (at 127 degrees East/ 52 degrees South, see the upper right corner of LAC 130) looks quite distinct on the farside map of Hallwag. - DannyCaes Feb 13, 2012