Daniell (crater)

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Daniell
Daniell - LROC - WAC.JPG
Daniell and two satellite craters, W and X
Coordinates 35°25′N31°10′E / 35.42°N 31.16°E / 35.42; 31.16
Diameter 28.20 km (17.52 mi)
Depth 2.1 km
Colongitude 329° at sunrise
Eponym John F. Daniell
Selenochromatic Image (Si) of crater area Frigoris-Serenitatis zone Si.jpg
Selenochromatic Image (Si) of crater area
Lunar Orbiter 4 image of Daniell (note different lighting than above) Daniell crater 4079 h1.jpg
Lunar Orbiter 4 image of Daniell (note different lighting than above)
Apollo 15 image Daniell crater AS15-91-12365.jpg
Apollo 15 image
Lunar Orbiter 4 image of Rimae Daniell Rimae Daniell.jpg
Lunar Orbiter 4 image of Rimae Daniell

Daniell is a lunar impact crater located in the southern half of the Lacus Somniorum. To the south-southeast is the much larger crater Posidonius. The Rimae Daniell rille system are to the west of Daniell crater.

The rim of Daniell is oval in form, with the long axis oriented north-northwest to south-southeast. Most of the wall is well-formed and relatively free of wear, although it appears slumped at the southern end. The interior lacks a central peak. The floor surface has a lower albedo than the surroundings and is fractured. [1] Lunar geologist Chuck Wood speculated that the fractured floor may have been uplifted by the massive slumps on northwest and southeast rims. [2]

The crater was named in 1935 by the IAU after British physicist, chemist, meteorologist John F. Daniell. [3]

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 Daniell.

DaniellLatitudeLongitudeDiameter
D37.0° N25.8° E6 km
W35.9° N31.5° E3 km
X36.6° N31.8° E5 km

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References

  1. The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348. (online)
  2. Wood, Chuck (2006-10-27). "A Very Strange Crater". Lunar Photo of the Day. Archived from the original on 2007-09-29. Retrieved 2006-10-27.
  3. Daniell, Gazetteer of Planetary Nomenclature International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)