Larissa ("LA ree suh") is the fifth of Neptune's known satellites:
orbit: 73,600 km from Neptune diameter: 193 km (208 x 178) mass: ?
Larissa was a daughter of Pelasgus.
Harold Reitsema is now usually credited with the discovery of Larissa by ground-based stellar occultation observations. The first (and so far only) images of it were obtained by Voyager 2.
Like Proteus, Larissa is irregular (non-spherical) in shape and appears to be heavily cratered.