Neptune: Moons: Larissa

This image of Larissa was acquired by the Voyager 2 spacecraft on August 24, 1989.

Larissa [LA-ree-suh] is only about 48,800 kilometers (30,300 miles) from Neptune's clouds, and circles the planet in 13 hours, 18 minutes. Its diameter is about 190 kilometers (120 miles). It is irregularly shaped and shows no sign of any geological modification. Larissa circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane.

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