Tvären is a circular bay close to Studsvik, Sweden. The bay lies above an ancient buried impact crater about 2 km in diameter. The crater is estimated to be about 455 million years old (Late Ordovician).[1]

Asteroid 7771 Tvären is named after the bay.


  1. ^ "Tvären". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2009-08-20.

Coordinates: 58°46′N 17°25′E / 58.767°N 17.417°E / 58.767; 17.417

This page was last updated at 2019-11-13 04:27, update this pageView original page

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