61.Piazzi

South-western edge of the visible part of the Moon. The system of radial mountain ridges and valleys around Mare Orientale ends here, Vallis Bouvard, Vallis Inghirami and Vallis Baade. From Earth difficult to observe because of the low angles.

BAADE - Walter Baade (1893 - 1960) German astronomer. Worked at Mt. Wilson and Mt. Palomar Observatory. Through his work he contributed greatly to our knowledge about our, and other, Galaxies.

(58Km /36Mi ) (Dept: 5,240m /17,190ft) (44.77S, 82.01W) Circular formation. Rough floor, many terraces, tiny central mountain.

VALLIS BOUVARD - Alexis Bouvard (1767 -1843) French mathematician and astronomer, discoverer of several comets.

Valley. (188 x 50km /117 x 31Mi  ) (38.44S, 83.56W.) Valley, part of the mare Orientalis Basin.

CATALAN - Miguel Cataln (1894 - 1957) Spanish physicist and specialist in spectroscopy.

Crater. (27km /17Mi) (45.78S, 87.33W) Irregular with terraced inner walls.

FOURIER - Jean Babtiste Joseph Baron de Fourier (1768 - 1830) French physicist and mathematician. The discoverer of the greenhouse effect.

Crater. (52km /32Mi ) (Dept: 2,980m /9,780ft) (30.33S, 53.1W) No central hill, satellite crater Fourier B lies along the eastern inner side.

GRAFF - Kasimir R. Graff (1878 - 1950) German/Austrian astronomer, of Polish decent. Worked on Moon maps, visual observer.

Crater. (36km /22Mi ) (Dept: 4,970m /16,305ft) (42.35S, 88.69W) Circular with tiny craterlets on the floor.

LACROIX - Sylvestre F. de Lacroix (1723 - 1788) French Mathematician and teacher.

Crater. (37km /23Mi ) (Dept: 2,360m/7,740ft) (37.94S, 59.18W) Lacroix J that overlies the southern rim. For the rest circular.

LAGRANGE - Joseph Louis Lagrange (1736 - 1813) French mathematician and author of "Mecanique Analytique", known from the Lagrangian points in planetary orbits.

Crater. (225km /140Mi ) (Dept: 2,700km /8,860ft) (32.3S, 72.8W) Large eroded remains of a crater, with a lava covered floor.

LEHMANN - Jacob H. W. Lehmann (1800 - 1863) German theologian and astronomer, worked on celestial mechanics.

Crater. (53km /33Mi ) (Dept: 800m /2,625ft) (39.97 S, 56.13 W) Heavily worn with an irregular rim.

PIAZZI - Giuseppe Piazzi. (1746 - 1826) Italian astronomer, discovered the first Planetoid. (Ceres).

Crater. (101km /63Mi) (Depth: 1,620m /5,315ft) (36.24S, 68.02W) Heavily worn and eroded walled plain.

 

 

 

 

 

 

 

 

 

   

 

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SHALER - Nathaniel S. Shaler (1841 - 1906) American geologist and paleontologist. Geological analysis of Moon pictures.

Crater. (48km /28Mi ) (Dept: 3,310m /10,860t) (32.88S, 85.24W) Circular rim, rough floor with a few craterlets.

Wright - 1. Frederick E. Wright (1878 - 1953) American astronomer and selenographer. 2. Thomas Wright (1711 - 1786) British philosopher and physicist. 3. William H. Wright (1871 - 1959) American astronomer. Mars photography.

Crater. (39km /24Mi ) (31.6S, 86.6W) Circular rim, rough floor with a few craterlets. Forms a pair with Shaler.

 

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