Ctesibius (crater)

Ctesibius
LRO image
Coordinates0°48′N 118°42′E / 0.8°N 118.7°E / 0.8; 118.7
Diameter32.10 km (19.95 mi)[1]
Depth2.5 km (1.6 mi)
Colongitude242° at sunrise
EponymCtesibius
Apollo 16 image

Ctesibius is a small lunar impact crater that is located near the equator, on the far side of the Moon. It lies between the larger crater Abul Wáfa to the west and the slightly smaller Heron to the east.[2]

The outer wall of Ctesibius is wide and sharp-edged, with little erosion. A low ridge is attached to the southern rim, and curves to the south-southeast. At the center of the relatively flat interior is a low ridge. Faint traces of ray material lies across the western floor and rim from Necho to the southeast.[3]

This formation is named after the ancient Greek-Egyptian inventor Ctesibius (unkn-c. 100 B.C.), who was distinguished for his inventions in hydrolics.[4] Its designation was officially adopted by the International Astronomical Union in 1976.[1]

References

  1. 1 2 "Ctesibius". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program. Retrieved 2026-07-16.
  2. ↑ "LAC 65" (PDF). Gazeteer of Planetary Nomenclature. Retrieved 2026-07-16.
  3. ↑ Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. p. 65. ISBN 978-0-521-81528-4.
  4. ↑ Iorio, Lorenzo (2026). Naming the Universe: An Etymological Dictionary of Physics, Mathematics and Space Sciences. Elsevier. p. 594. ISBN 978-0-443-45880-4.

Sources

  • 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.
  • Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
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