Jupiter's Galilean satellites are believed to have formed via co-accretion, while the Solar System's irregular satellites, such as Triton, are all believed to have been captured.
木星的伽利略衛星已經被認為是經由共同吸積形成，太陽系的不規則衛星，像是崔頓，都被認為是經由捕獲形成的。