This image of asteroid 951 Gaspra is a mosaic of two pictures snapped by the Galileo spacecraft from a range of 5,300 km, about 10 minutes before closest approach on October 29, 1991. Gaspra is an irregular body with dimensions of 19 x 12 x 11 km. The sunlit part of this view is approximately 18 kilometers diagonally from top right to bottom left. The North Pole is in the upper left.
Gaspra rotates counterclockwise every 7 hours.

The large concavity on the lower right limb is about 6 km in diameter. A remarkable feature of the surface of Gaspra is an abundance of small craters. More than 600 craters, 100 to 500 meters in diameter, are visible here. The number of such small craters compared to larger is much greater for Gaspra than for previously studied bodies of comparable size (such as satellites of Mars).