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Alfraganus (crater) 
Summary
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°24′S 19°00′E / 5.4°S 19.0°E |
|---|---|
| Diameter | 20 km |
| Depth | 2.8 km |
| Colongitude | 343° at sunrise |
| Eponym | Alfraganus |
Satellite craters edit
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 edit
- ^ "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 edit
Wikimedia Commons has media related to Alfraganus (crater).
- Alfraganus at The Moon Wiki
- LTO-78A3 Alfraganus[permanent dead link] — 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.