html Scott S. Sheppard's Pluto's Known Satellites Page: http://home. edu/users/sheppard/satellites/nepsatdata. Please upgrade your browser to improve your experience. dtm. ciw. Apr 23, 2024 · Scott S. Overview Proteus is one of the largest of Neptune's known moons, although it is not as big as Triton. He missed Proteus, the second-largest because it's too dark and too close to Neptune for telescopes of that era. html Oct 21, 2025 · Moons About Moons BY DESTINATION Earth (1) Mars (2) Jupiter (95) Saturn (83) Uranus (27) Neptune (14) Pluto (5) Asteroids, Comets & Meteors About Asteroids, Comets & Meteors BY TYPE Overview Proteus is one of the largest of Neptune's known moons, although it is not as big as Triton.