Pasteur (lunar crater)

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Pasteur
Pasteur crater 2196 med.jpg
Coordinates 11°54′S104°36′E / 11.9°S 104.6°E / -11.9; 104.6 Coordinates: 11°54′S104°36′E / 11.9°S 104.6°E / -11.9; 104.6
Diameter 232.77 km
Colongitude 259° at sunrise
Eponym Louis Pasteur

Pasteur is a large lunar impact crater, approximately 233 kilometers in diameter, belonging to the category termed a walled plain. It was named after French chemist and microbiologist Louis Pasteur. [1] It lies on the far side of the Moon as seen from the Earth, just beyond the eastern limb. The vicinity of this crater is occasionally brought into view from Earth due to librations, although not much detail can be seen.

Contents

Description

Lying along the southern rim of Pasteur is the smaller crater Backlund. Just to the southeast is Hilbert, another walled plain, nearly two-thirds the diameter of Pasteur. To the southwest is the prominent crater Sklodowska, and to the east is Meitner.

The outer rim of Pasteur is generally irregular, with sections being heavily damaged by multiple impacts. The northern rim in particular has been nearly obliterated by overlapping impacts, and the southern rim is not in much better shape with a stretch overlain by Backlund. The southeast rim of Pasteur is nearly linear near where the ground has been modified by Hilbert. Even the western rim is heavily damaged, with overlying craters Pasteur U, Anders' Earthrise crater, and Pasteur Q. (The first of these, Pasteur U, forms a merged group of overlapping craters.)

The interior is not in much better shape, with the southern half irregular from ejecta covering the surface, and several small craters lying across the floor. In the northwest part of the floor is a short chain of small, overlapping craters forming an arcing line from north to south. The satellite craters Pasteur G and Pasteur H form a pair to the east of the midpoint.

The satellite crater Pasteur D, to the northeast of Pateur, is fresh and has a ray system, and is consequently mapped as part of the Copernican System. [2]

Satellite craters

Oblique Apollo 17 Mapping Camera image of Pasteur crater Pasteur crater AS17-M-2180.jpg
Oblique Apollo 17 Mapping Camera image of Pasteur crater
Oblique view from Apollo 15 Pasteur crater AS15-M-2762 ASU.jpg
Oblique view from Apollo 15

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

PasteurLatitudeLongitudeDiameterRef
A7.0° S105.7° E25.73 km WGPSN
B8.2° S105.8° E19.44 km WGPSN
D8.8° S108.8° E37.62 km WGPSN
E10.8° S108.5° E18.9 km WGPSN
G11.6° S105.7° E20.73 km WGPSN
H12.1° S106.4° E21.6 km WGPSN
M12.2° S104.6° E11.33 km WGPSN
Q13.6° S101.5° E23.35 km WGPSN
S12.2° S102.0° E28.76 km WGPSN
U9.8° S101.5° E37.88 km WGPSN
V9.0° S100.8° E22.49 km WGPSN
Y8.0° S103.5° E49.85 km WGPSN
Z6.8° S104.2° E13.98 km WGPSN

Pasteur T was renamed Anders' Earthrise in October 2018.

See also

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References

  1. "Lunar crater Pasteur". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
  2. The geologic history of the Moon, 1987, Wilhelms, Don E.; with sections by McCauley, John F.; Trask, Newell J. USGS Professional Paper: 1348. Plate 11: Copernican System (online)