Murchison (crater)

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Murchison
Murchison crater 4102 h1.jpg
Coordinates5°06′N 0°06′W / 5.1°N 0.1°W / 5.1; -0.1Coordinates: 5°06′N 0°06′W / 5.1°N 0.1°W / 5.1; -0.1
Diameter58 km
Depth1.8 km
Colongitude0° at sunrise
EponymRoderick I. Murchison
Oblique view from Lunar Orbiter 3

Murchison is a lunar impact crater on the north edge of the Sinus Medii, named in honour of the geologist Sir Roderick Murchison. It shares a section of rim with the crater Pallas. The Lunar prime meridian (or Zenith line) is some kilometers east of the center. To the southeast on the mare is the circular crater Chladni, and to the northeast is Ukert. Farther to the east is the prominent Triesnecker.

From that location the Earth would appear in the lunar sky at around 5 degrees from the top. Also the sun rises during the third quarter of Earthshine and the sun sets during its first quarter.

The wall of Murchison is heavily worn and has completely disappeared in a wide gap to the southeast. The rim is most intact along the northeast part of the crater, but even there it is indented and irregular. Only a ridge remains of the rim shared by Pallas and Murchison, with gaps to the north and south. A low ridge from the east wall runs south to join the rim of Chladni. The crater floor has been flooded with lava, and joins the Sinus Medii through the wide gap in the southeast wall.

Satellite craters[edit]

Murchison crater and its satellite craters taken from Earth in 2012 at the University of Hertfordshire's Bayfordbury Observatory with the telescopes Meade LX200 14" and Lumenera Skynyx 2-1

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Murchison.

Murchison Latitude Longitude Diameter
T 4.4° N 0.1° E 3 km

References[edit]

  • Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
  • Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
  • 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. (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]

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