Cauchy (crater)
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Through Fault (geology)
Cauchy lies between the Rupes Cauchy and the Rimae Cauchy, as described below.
South of Rupes Cauchy are two lunar domes designated Omega (ω) Cauchy and Tau (τ) Cauchy. They lie to the south and southwest of Cauchy respectively. Each lunar dome has a small depression at its crest, which is likely to be a volcanic vent rather than an impact crater. The vent at the top of Omega Cauchy is called Donna.
Rupes Cauchy
To the south of Cauchy is a 120-km fault in the surface named the Rupes Cauchy, which forms a series of cliffs or escarpments. This wall roughly parallels the Rima Cauchy to the north.
Rupes Cauchy was named Fossa Casalis in a 1974 map, but this was not approved by the IAU. The term Rupes was used in favor of Fossa for the names of lunar scarps.
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Rima Cauchy
To the north of Cauchy is the rille named Rima Cauchy, a 210-kilometer-long graben.
Rima Cauchy was named Fossa Cauchy in a 1974 map, but term Rima was used in favor of Fossa for the names of lunar rilles.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Cauchy.
Cauchy A is shown as Hussein on some lunar maps based on Apollo 15 photographs, but the name was not approved by the IAU, which officially designated the crater name in 2006.