Discovery: Nereid was discovered in 1949 by Gerard P. Kuiper, who named it after the Nereids, sea nymphs from Greek mythology.

Orbit: Nereid has an eccentric and highly inclined orbit around Neptune. Its orbit is retrograde, meaning it orbits in the opposite direction of Neptune's rotation. This suggests that Nereid may be a captured object that was gravitationally captured by Neptune at some point in the past.

Size and Shape: Nereid has an irregular shape and is classified as one of Neptune's irregular moons. It has a mean radius of approximately 170 kilometers (105 miles). Nereid's irregular shape and relatively small size make it distinct from the larger and more spherical moons in the solar system.

Surface Features: Due to its distance from Earth and the limited data available, our understanding of Nereid's surface features is limited. However, it is believed to have a heavily cratered surface, similar to many other small moons in the outer solar system. The presence of impact craters suggests that Nereid has experienced collisions with other objects in the past.

Characteristics: Nereid is a relatively dark object, reflecting only a small portion of the sunlight that falls on its surface. Its composition is thought to be a mixture of rock and ice, typical of objects in the outer solar system.