Pirx is a 90 km (55.9 miles) wide impact crater on Pluto's natural satellite Charon, discovered in 2015 by the American New Horizons probe. It is located in at 55°12′N 256°11′E / 55.2°N 256.18°E / 55.2; 256.18 (Pirx).^[1] The crater is located near Charon's north pole.

Pirx (Charon)

Annotated map of Charon, with IAU-approved names for features as of 2018[update]
moon	Charon
Coordinates	55°12′N 256°11′E / 55.2°N 256.18°E / 55.2; 256.18[1]
Diameter	90 km
Discoverer	New Horizons
Eponym	Pirx the Pilot

Crater Pirx is named after Pilot Pirx, the main character in a series of short stories by Stanislaw Lem. The name was approved by the International Astronomical Union in 2018.^[1]