Sei

MESSENGER NAC
Planet	Mercury
Coordinates	64°37′S 88°35′W / 64.61°S 88.59°W / -64.61; -88.59
Quadrangle	Discovery
Diameter	137 km (85 mi)
Eponym	Sei Shōnagon

Sei is a crater on Mercury. Its name was adopted by the International Astronomical Union (IAU) in 1976. The crater is named for Japanese writer Sei Shōnagon.^[1]

To the west of Sei is Alencar crater. To the northeast is Ma Chih-Yuan crater.

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References