Dorsum compasses
| Dorsum compasses | ||
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| Above left the southeast part of the circle ridge. In the center of the picture lunar crater Lambert . | ||
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| position | 29.55 ° N , 24.82 ° W | |
| diameter | 195 km | |
| See also Gazetteer of Planetary Nomenclature | ||
The Dorsum Circle is a 210 km long, so-called Dorsum in the Mare Imbrium on the Earth's moon . It was named in 1976 after the German geologist and mineralogist Ferdinand Zirkel .
Annegrit, Charles and Mavis Crater ( Lunar Orbiter 4 )
South of the northern foothills of Dorsum Zirkel lies a group of very small craters, which owe their name to their appearance on sheet 40A1 / S1 (Dorsum Zirkel) of NASA's Topophotomap map series. These designations were adopted by the IAU in 1976 .
| Surname | position | diameter | link |
|---|---|---|---|
| Annegrit | 29.41 ° N , 25.64 ° W | 1 km | [1] |
| Charles | 29.88 ° N , 26.37 ° W | 1 km | [2] |
| Mavis | 29.75 ° N , 26.36 ° W | 1 km | [3] |
The names of these craters appear in a list of male and female first names intended as crater names in the Proceedings of the 16th General Assembly of the IAU (Grenoble 1976).
See also
Web links
Individual evidence
- ↑ Topophotomap 40A1 / S1
- ↑ Excerpt from Transactions of the IAU Vol. XVIB, Ed. By D. Riedel, 1977