Astronomy:Liu Hsin (crater)

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Liu Hsin Crater
Liu Hsin crater f088a23.jpg
Viking Orbiter 1 image from 1976
PlanetMars
RegionPhaethontis quadrangle
CoordinatesCoordinates: 53°36′S 171°36′W / 53.6°S 171.6°W / -53.6; -171.6
Diameter137 km
Gullies in Liu Hsin Crater, as seen by HiRISE under HiWish program. Curved lines on crater floor may be remains of old glaciers.

Liu Hsin Crater is a crater in the Phaethontis quadrangle of Mars, located at 53.6°S latitude and 171.6°W longitude. It is 137.0 km in diameter and was named after Liu Xin. Liu Hsin (also spelled Xin) was a Chinese astronomer, historian, and editor during the Western Han Dynasty (206 BCE to 9 CE) and the Xin Dynasty (9 to 23 CE).[1] The name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).[2]

Dunes

Liu Hsin Crater shows some barchan dunes. When there are perfect conditions for producing sand dunes, steady wind in one direction and just enough sand, a barchan sand dune forms. Barchans have a gentle slope on the wind side and a much steeper slope on the lee side where horns or a notch often forms.[3]

Liu Hsin, as seen by MOLA, THEMIS IR Day, and in map by International Astronomical Union Working Group

See also

References