TheDebussyquadrangle (H-14) is one offifteen quadrangles on Mercury. It runs from 270 to 360° longitude and from -20 to -70° latitude. Named after theDebussy crater, it was mapped in detail for the first time afterMESSENGER entered orbit aroundMercury in 2011. It had not been mapped prior to that point because it was one of the six quadrangles that was not illuminated whenMariner 10 made its flybys in 1974 and 1975. These six quadrangles continued to be known by theiralbedo feature names, with this one known as the Cyllene quadrangle.^[1][2]

In addition to the prominent Debussy crater, the western half of theRembrandt basin is within the quadrangle. Rembrandt is the second-largest impact basin on Mercury, afterCaloris. The eastern half of Rembrandt is in theNeruda quadrangle.

TheBach quadrangle is south of Debussy quadrangle. To the west isDiscovery quadrangle, and to the east isNeruda quadrangle. To the north isDerain quadrangle, and to the northeast isEminescu quadrangle.

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