Jupiter has Sixteen moons that can be divided into four groups.
6. Telesto and Calypso orbit in Tethys's Lagrange points (60
degrees ahead and behind Tethys in the same orbit).
8. Phoebe's eccentric, retrograde orbit and unusual albedo indicates that it may be a captured asteroid or Kuiper Belt object.
9. The possability of 12 new moons was made posssble from views of the Hubble Space Telescope and Voyager 2. But it's believed that there are actually only 4 new moons and not 12. All doubt should be laid to rest with the arrival at Saturn of the Cassini spacecraft in 2004.
2. They all have nearly circular orbits in the plane of Uranus's equator (and hence at a large angle to the plane of the ecliptic).
3. They form two distinct classes: