Saturn's moons have a minimum of 10 recognized moons. In order of proximity to Saturn, they are: Titan 10, Titan 1, Titan 2, Titan 3, Titan 4, Titan 5, Titan 6, Titan 7, Titan 8, and Titan 9. On September 1, 1979, the interplanetary probe Pioneer 11 reportedly discovered a new moon, tentatively named Pioneerrock or 1979S1, but it has not yet been confirmed. One of them, Titan, is only 159,500 kilometers away from Saturn, which is only 2.66 times Saturn's equatorial radius, and is close to the Loxie limit. Titan VIII, whose orbital plane intersects Saturn's equatorial plane at an angle of 14°7 and whose orbital plane intersects Saturn's rotational orbital plane at an angle of 16°3, is an irregular satellite; Titan IX, which rotates around Saturn in an elliptical orbit with an eccentricity of 0.1633, and whose orbital plane intersects Saturn's equatorial plane at an angle of about 150°, is also an irregular satellite. In addition to Titan VIII and Titan IX, Titan I to Titan VII and Titan X are all regular satellites that revolve around Saturn in a near-circular orbit near the plane of Saturn's equator. Of the 10 Saturn moons, Titan I to Titan X, Titan IX is the only retrograde moon because its orbital plane intersects Saturn's rotational orbital plane at an angle of 174°42, and it rotates around Saturn in the opposite direction of Saturn's rotation around the Sun.

Worthy of special mention in the Titan system are Titan, Titan I, and Titan VIII. Titan is also known as Titan. It has a radius of about 2,575 kilometers, is the second largest moon in the solar system, after Io Ganymede, than the closest planet to the sun -- Mercury is even larger. It orbits Saturn every 16 days or so. Because of its large mass and distance from the Sun, it was assumed that it might have an atmosphere based on its escape velocity, and in 1944 Kuiper discovered a methane line in Titan's spectrum, which led to the discovery that it did have an atmosphere. It is now known that the main components of its atmosphere are methane and hydrogen, and that the atmospheric pressure is about 1.5 Earth atmospheres. Titan's surface is probably icy, with a temperature of about 125 K. In September 1979, Pioneer 11 photographed the moon 356,000 kilometers away. Titan is orange in color. The clouds in the moon's atmosphere are composed of methane, ethane, acetylene (and possibly nitrogen), etc.; these components dissociate in the presence of the Sun's ultraviolet radiation, resulting in the above color. "Pioneer 11 also measured the temperature of Titan's upper atmosphere at -200 degrees Celsius, similar to the temperature of Saturn's rings.

How many moons does Saturn have? 18 in 1996, up to 24 in 2000, 53 in 2003, 60 in 2005, and 62 recently discovered