Polybius (crater)
 Lunar Orbiter 4 image | |
| Coordinates | 22°24′S 25°36′E / 22.4°S 25.6°E |
|---|---|
| Diameter | 41 km |
| Depth | 2.1 km |
| Colongitude | 335° at sunrise |
| Eponym | Polybius |
Polybius is a lunar impact crater in the southeast part of the Moon, and is named after ancient Greek historian Polybius.[1] It is located to the south-southeast of the larger crater Catharina, in the area framed by the Rupes Altai scarp. Some distance to the northeast is the Mare Nectaris, with the flooded craters Beaumont and Fracastorius.
The crater rim of Polybius appears slightly distended in the northeast, and has a cut through the northern wall. But the wall is otherwise moderately intact with only minor erosion. The interior floor is flat and almost featureless, with no central rise. To the south and east, a ray from Tycho cuts across the bowl-shaped Polybius A and Polybius B craterlets.
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 Polybius.
| Polybius | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 23.0° S | 28.0° E | 17 km |
| B | 25.5° S | 25.5° E | 12 km |
| C | 22.0° S | 23.6° E | 29 km |
| D | 26.9° S | 27.9° E | 9 km |
| E | 24.4° S | 26.2° E | 9 km |
| F | 22.2° S | 23.0° E | 21 km |
| G | 22.5° S | 22.7° E | 5 km |
| H | 21.1° S | 22.7° E | 8 km |
| J | 22.7° S | 23.5° E | 9 km |
| K | 24.3° S | 25.3° E | 14 km |
| L | 22.0° S | 28.2° E | 7 km |
| M | 21.3° S | 22.1° E | 6 km |
| N | 23.4° S | 26.8° E | 13 km |
| P | 21.5° S | 22.9° E | 17 km |
| Q | 25.1° S | 27.5° E | 6 km |
| R | 25.6° S | 27.3° E | 7 km |
| T | 26.1° S | 25.5° E | 12 km |
| V | 25.2° S | 29.1° E | 6 km |
References
- ^ "Gazetteer of Planetary Nomenclature | Polybius". usgs.gov. International Astronomical Union. Retrieved August 24, 2017.
- Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
{{cite book}}: Invalid|ref=harv(help) - Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
{{cite book}}: Invalid|ref=harv(help) - 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.
{{cite book}}: Invalid|ref=harv(help) - McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
{{cite web}}: Invalid|ref=harv(help) - 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.
{{cite journal}}: Invalid|ref=harv(help) - Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
{{cite book}}: Invalid|ref=harv(help) - Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
{{cite book}}: Invalid|ref=harv(help) - Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
{{cite book}}: Invalid|ref=harv(help) - Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
{{cite book}}: Invalid|ref=harv(help) - Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
{{cite book}}: Invalid|ref=harv(help) - Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
{{cite book}}: Invalid|ref=harv(help)
