Halimede

Halimede was discovered in 2002 through observations conducted using the Subaru telescope in Hawaii. Named after a Nereid from Greek mythology, Halimede orbits Neptune at a vast distance, averaging approximately 16.1 million kilometers from the planet's center. It follows an eccentric and highly inclined orbit, setting it apart from Neptune's inner, more regular moons. Halimede's precise size and shape remain uncertain due to its remote location and small size, classifying it as one of Neptune's irregularly shaped satellites. It is believed to have been captured into its distant orbit, possibly originating from the Kuiper Belt or another distant source, with its dynamics influenced by the gravitational interactions with Neptune's larger moon, Nereid, and other outer moons.