Alfraganus (crater)
Alfraganus is a small lunar impact crater that lies in the rugged highland region to the southwest of the Mare Tranquillitatis. It is named after the Arab Muslim astronomer Alfraganus.[1] Northwest of Alfraganus is the crater Delambre, and to the south is the irregular Zöllner. The rim of Alfraganus is circular and retains a sharp edge that has not received a significant amount of wear due to subsequent impacts. The interior floor is roughly half the diameter of the crater rim.
 Lunar Orbiter 4 image | |
| Coordinates | 5.4°S 19.0°E |
|---|---|
| Diameter | 20 km |
| Depth | 2.8 km |
| Colongitude | 343° at sunrise |
| Eponym | Alfraganus |
The crater (to the bottom) in a Selenochromatic Image (Si)
Oblique view of Alfraganus from Apollo 16 Metric Camera
Oblique view of Alfraganus from Apollo 16 Panoramic Camera
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Alfraganus.
| Alfraganus | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 3.0° S | 20.3° E | 13 km |
| C | 6.1° S | 18.1° E | 11 km |
| D | 4.0° S | 20.1° E | 8 km |
| E | 4.6° S | 19.0° E | 4 km |
| F | 3.5° S | 20.8° E | 9 km |
| G | 2.6° S | 21.2° E | 6 km |
| H | 4.4° S | 19.1° E | 13 km |
| K | 5.3° S | 19.5° E | 4 km |
| M | 5.6° S | 19.6° E | 3 km |
References
- "Alfraganus". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
- Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
- Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
- Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
- McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 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 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID 122125855.
- Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
- Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
- Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
- Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
- Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
External links
Wikimedia Commons has media related to Alfraganus (crater).
- Alfraganus at The Moon Wiki
- LTO-78A3 Alfraganus — L&PI topographic map
- Wood, Chuck (December 19, 2006). "A Gray Day". Lunar Photo of the Day. Archived from the original on June 14, 2011.
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