Pytheas (crater)
|
Lunar Orbiter 4 image (Streak crossing below crater is blemish on original image) | |
| Coordinates | 20°30′N 20°36′W / 20.5°N 20.6°WCoordinates: 20°30′N 20°36′W / 20.5°N 20.6°W |
|---|---|
| Diameter | 20 km |
| Depth | 2.5 km |
| Colongitude | 21° at sunrise |
| Eponym | Pytheas |
Oblique view from Apollo 15, facing south
Close up of the south wall of Pytheas crater from Apollo 17
Pytheas is a small lunar impact crater located on the southern part of the Mare Imbrium, to the south of the crater Lambert.
It has a sharply defined rim, a hummocky outer rampart, and an irregular interior due to slumping or fall-back. There is a small crater along the northern outer rampart, and a similar crater about 20 km to the west. The crater possesses a small ray system that extends for a radius of about 50 kilometers. It is surrounded by lunar mare that is dusted with ray material from Copernicus to the south.
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 Pytheas.
| Pytheas | Latitude | Longitude | Diameter |
|---|---|---|---|
| A | 20.5° N | 21.7° W | 6 km |
| B | 17.5° N | 19.4° W | 4 km |
| C | 18.8° N | 19.1° W | 4 km |
| D | 21.1° N | 20.5° W | 5 km |
| E | 18.1° N | 19.0° W | 4 km |
| F | 16.5° N | 19.1° W | 5 km |
| G | 21.6° N | 17.7° W | 4 km |
| H | 20.5° N | 16.5° W | 3 km |
| J | 21.6° N | 21.1° W | 3 km |
| K | 19.9° N | 16.2° W | 2 km |
| L | 18.6° N | 16.9° W | 3 km |
| M | 19.9° N | 17.7° W | 3 km |
| N | 22.5° N | 20.5° W | 3 km |
| U | 21.7° N | 19.4° W | 3 km |
| W | 21.7° N | 23.7° W | 3 km |
References
- Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature (PDF). NASA RP-1097.
- Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2016-02-09.
- 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.
- 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. (2003). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-54414-6.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer Science & Business Media. ISBN 978-1-852-33193-1.
External links
- Oblique Apollo 15 image of Pytheas: AS15-92-12576
- "LTO-40D2 Pytheas". L&PI topographic map. Retrieved November 4, 2005.
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