Grotrian (crater)
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| Crater characteristics | |
| Coordinates | 66.5° S, 128.3° E |
|---|---|
| Diameter | 37 km |
| Depth | Unknown |
| Colongitude | 233° at sunrise |
| Eponym | Walter Grotrian |
Grotrain is a lunar impact crater that is located on the southern hemisphere on the far side of the Moon. It lies to the north of the huge Schrödinger walled-basin, within the radius of that formation's outer blanket of ejecta. The long Vallis Planck formation begins just to the north of Grotrain crater, and continues to the north-northwest toward Pikel'ner crater.
The outer wall of this crater forms a very nearly circular shape, with only a small crater across the southern rim to break up the symmetry. The interior surfaces form relatively smooth slopes that continue down to the material deposited across the bottom. Apart from the aforementioned impact and a tiny craterlet on the northern edge of the rim, this formation has not been significantly eroded by subsequent impacts.
[edit] Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Grotrian crater.
| Grotrian | Latitude | Longitude | Diameter |
|---|---|---|---|
| X | 64.5° S | 125.5° E | 20 km |
[edit] References
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- Blue, Jennifer (July 25, 2007). Gazetteer of Planetary Nomenclature. USGS. Retrieved on 2007-08-05.
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- Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 0-936389-27-3.
- McDowell, Jonathan (July 15, 2007). Lunar Nomenclature. Jonathan's Space Report. Retrieved on 2007-10-24.
- Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by The Working Group of Commission 17 of the IAU". Space Science Reviews 12: 136.
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