Janssen (moon crater)
| Janssen | ||
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| Janssen and surroundings ( LROC -WAC) | ||
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| position | 44.99 ° S , 41.13 ° O | |
| diameter | 201 km | |
| depth | 2740 m | |
| Card sheet | 114 (PDF) | |
| Named after | Pierre Jules César Janssen (1824–1907) | |
| Named since | 1935 | |
| Unless otherwise stated, the information comes from the entry in the IAU / USGS database | ||
Janssen is a very large impact crater to the south of the moon front . The Vallis Rheita runs northeast of it . Its northern edge is covered by the smaller but more clearly defined crater Fabricius . Janssen itself is badly eroded and overprinted by further impacts. The lunar groove system of the Rimae Janssen runs in the relatively flat interior .
| Letter | position | diameter | link |
|---|---|---|---|
| B. | 43.19 ° S , 34.36 ° O | 21 km | [1] |
| C. | 42.89 ° S , 34.88 ° O | 7 km | [2] |
| D. | 48.66 ° S , 41.22 ° E | 29 km | [3] |
| E. | 48.84 ° S , 39.81 ° O | 24 km | [4] |
| F. | 49.82 ° S , 41.9 ° E | 35 km | [5] |
| H | 46.44 ° S , 41.69 ° E | 10 km | [6] |
| J | 43.44 ° S , 36.59 ° O | 26 km | [7] |
| K | 46.21 ° S , 42.28 ° E | 15 km | [8th] |
| L. | 46.1 ° S , 43.55 ° O | 12 km | [9] |
| M. | 41.91 ° S , 35.42 ° O | 16 km | [10] |
| N | 41.44 ° S , 32.11 ° O | 5 km | [11] |
| P | 45.51 ° S , 39.73 ° O | 4 km | [12] |
| Q | 46.37 ° S , 39.33 ° O | 5 km | [13] |
| R. | 48.28 ° S , 38.66 ° E | 22 km | [14] |
| S. | 50.44 ° S , 41.79 ° O | 7 km | [15] |
| T | 48.89 ° S , 42.27 ° O | 30 km | [16] |
| X | 42.95 ° S , 33.27 ° E | 24 km | [17] |
The crater was officially named by the IAU in 1935 after the French astronomer Pierre Jules César Janssen .
Web links
- Janssen in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS
- Janssen on The-Moon Wiki
- Spektrum .de: amateur recording [18]
Individual evidence
- ^ John E. Westfall: Atlas of the Lunar Terminator. Cambridge University Press, Cambridge et al. 2000, ISBN 0-521-59002-7 .