Arche

Arche is one of Jupiter's irregular moons. It was discovered on October 31, 2002, by a team of astronomers led by Scott S. Sheppard. Arche is part of the Carme Group, a collection of irregular moons with similar orbital characteristics. Arche's small size and distant orbit around Jupiter limit the available information about its physical characteristics, composition, and surface features. It follows a retrograde, highly inclined orbit around Jupiter, moving in the opposite direction of the planet's rotation and at an angle to the plane of Jupiter's equator. Irregular moons like Arche are believed to have originated from captured asteroids or fragments resulting from collisions.