Angström (crater)

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Angström
Ångström crater AS15-M-2743.jpg
Apollo 15 image
Coordinates29°54′N 41°36′W / 29.9°N 41.6°W / 29.9; -41.6Coordinates: 29°54′N 41°36′W / 29.9°N 41.6°W / 29.9; -41.6[1]
Diameter9.55[1] km
Depth2.0 km
Colongitude42° at sunrise
EponymAnders J. Ångström[1]
Oblique view from Apollo 15. NASA photo.

Ångström is a small lunar impact crater located on the border between Oceanus Procellarum to the west and Mare Imbrium to the east. To the south is a formation of mountains rising out of the mare named the Montes Harbinger. To the east are some wrinkle ridges named the Dorsum Bucher and Dorsa Argand. This crater is bowl-shaped, with a circular rim and inner walls that slope down to the small central floor. It has a higher albedo than the surrounding maria.[2] The crater halo is radar dark, indicating a lack of larger blocks among the fine ejecta.[3]

Ångström crater is named after Anders Jonas Ångström,[1] a Swedish physicist and one of the founders of the science of spectroscopy.

Satellite craters[edit]

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Ångström.[2]

Ångström Latitude Longitude Diameter
A 30.9° N 41.1° W 6 km
B 31.7° N 44.1° W 6 km

References[edit]

  1. ^ a b c d Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05.
  2. ^ a b Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
  3. ^ Ghent, Rebecca R.; et al. (February 2005). "Earth-based observations of radar-dark crater haloes on the Moon: Implications for regolith properties". Journal of Geophysical Research. 110 (E2): E02005. Bibcode:2005JGRE..110.2005G. doi:10.1029/2004JE002366. E02005.

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