25. Römer

Mountainess area bordering the Sea of Tranquility, and the Sea of Serenity. All around Römer we see a field of tight packed craters with only few still intact crater walls. In the area Römer-Charconac-Littrow we find a rille system also visible in smaller telescopes.

FRANZ - Julius Franz (1847 – 1913) Observed the transit of Venus. Measurements of features near the lunar limbs. Published a book 1906, called "Der Mond". In which he named some lunar mares along the limb the Mare Orientale, Mare Autumni and Mare Veris.

Crater (25km /16Mi Ø ) (Dept: 600m /1,968ft) (16.6°N, 40.2°E) Eroded rim of generally circular form, interior flooded, leaving only a narrow inner wall and a low rim.

LE MONNIER - Pierre Charles Le Monnier. (1715 -1799) French astronomer. Started observing before he was sixteen, and the presentation of a lunar map resulted in his admission to the French Academy of Sciences, on 21 April 1736, aged only 20.

Crater. (61km /37Mi Ø ) (Dept: 2,400m /7,300ft) (26.6°N, 30.6°E) Flooded crater with halve its rim missing.

LITTROW - Johann J. von Littrow (1781 - 1840) Austrian astronomer. Director of the Vienna Observatory, created the only conformal retroazimuthal map projection, which is known as the Littrow projection.

Crater. (31km /19Mi Ø ) (Dept: 1,200m /3,600ft) (21.5°N, 31.4°E) Rim heavily worn and eroded, especially along the southern wall. The interior flooded with lava.

MARALDI - 1. Giancomo Filippo Maraldi (1665 - 1729) Italian mathematician. 2. Giovanni Domenico Maraldi ( 1709 - 1788) Both nephews of Domenico Cassini, with whom they cooperated. And both astronomers in their own right.

Crater. (40km /24Mi Ø ) (Dept: 1,300m/3,900ft) (19.4°N 34.9°E) Flooded by lava, remnants of a central mountain, outer wall partly destroyed.

NEWCOMBE - Simon Newcomb. (1835 - 1909) Canadian-American astronomer and mathematician. Worked on measuring the speed of light and on time measuring. (Important for navigation).

Crater. (39km /24Mi Ø ) (Depth: 2,180m /6,600ft) (29.9°N, 43.8°E) Sharp-edged, irregular rim, polygonal more than circular, terraced along the inner side. South-southwestern part of the rim is overlaid by the smaller crater Newcomb A.

MONTES TAURUS - The Taurus mountains. Named  by Johannes Hevelius, (after the Taurus Mountains in southern Turkey).

Mountains. (172Km /107Mi Ø ) (Height: 3,000m /91,000ft) (28.4° N, 41.1° E) At the southwestern edge of the range is the crater Römer, Newcomb is located in the northeastern section, and  the Taurus-Littrow valley, the landing site of the manned Apollo 17 mission is also located in this area.

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