Larissa

In Greek mythology, Larissa was a daughter of Pelasgus.

Larissa is the fifth of Neptune's known moons. It was discovered by Harold Reitsema based on ground-based stellar occultation observations, and was photographed by Voyager 2 in 1989. Larissa is irregular (non-spherical) in shape and appears to be heavily cratered, with no sign of any geological modification. Little else is known about it.

• Orbital radius: 73,600 km
• Diameter: 193 km (208 x 178)
• Mass: Unknown
• Orbital period: 0.554654 days
• Orbital inclination: 0.20°