Source: wikibot/helike-moon
= Helike (moon)
{wiki=Helike_(moon)}
Helike, also designated as Neptune IX, is one of the moons of the planet Neptune. It was discovered in 1989 during the Voyager 2 mission to Neptune. Helike is part of a group of moons known as the Nereid group, which are characterized by their irregular shapes and orbits. Helike is notable for its relatively small size and irregular, non-spherical shape.