Winthrop (crater)

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Winthrop

Lunar Orbiter 4 image
Coordinates	10°42′S 44°24′W / 10.7°S 44.4°W / -10.7; -44.4
Diameter	18 km
Colongitude	45° at sunrise
Eponym	John Winthrop

Winthrop is the remnant of a lunar impact crater that has been flooded by lava from the Oceanus Procellarum. It was named after American astronomer John Winthrop.^[1] It lies across the western rim of the much larger crater Letronne, a feature that has been nearly destroyed by the intruding mare lavas. All that survives of Winthrop are a few segments of the outer rim.

Winthrop was previously identified as Letronne P before being renamed by the IAU in 1976.