Pytheas (crater)

Pytheas is a small lunar impact crater located on the southern part of the Mare Imbrium, to the south of the crater Lambert. It was named after ancient Greek navigator and geographer Pytheas of Massalia.[1]

Pytheas
Lunar Orbiter 4 image
(Streak crossing below crater is blemish on original image)
Coordinates20.5°N 20.6°W / 20.5; -20.6
Diameter20 km
Depth2.5 km
Colongitude21° at sunrise
EponymPytheas
Pytheas (lower left) and Copernicus (top) from Apollo 17. NASA photo.
Oblique view from Apollo 15, facing south
Close up of the south wall of Pytheas crater from Apollo 17

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
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References
  1. "Pytheas (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  • Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature (PDF). NASA RP-1097. Archived from the original on 2014-10-06.CS1 maint: ref=harv (link) CS1 maint: BOT: original-url status unknown (link)
  • Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.CS1 maint: ref=harv (link)
  • 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.CS1 maint: ref=harv (link)
  • McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.CS1 maint: ref=harv (link)
  • 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.CS1 maint: ref=harv (link)
  • Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.CS1 maint: ref=harv (link)
  • Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.CS1 maint: ref=harv (link)
  • Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.CS1 maint: ref=harv (link)
  • Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.CS1 maint: ref=harv (link)
  • Whitaker, Ewen A. (2003). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-54414-6.CS1 maint: ref=harv (link)
  • Wlasuk, Peter T. (2000). Observing the Moon. Springer Science & Business Media. ISBN 978-1-852-33193-1.
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