Titan is Saturn's biggest moon and the second biggest in the Solar System. It is also the only moon in the Solar System to have an atmosphere.
It has a equatorial radius of 2,575km and orbits Saturn at a distance of about 1.2 million km. It takes about 16 days to complete an orbit.
As mentioned earlier, this Titan has an atmosphere. It is made up of mainly Nitrogen (98.4%) and Methane with traces of Hydrogen (1.6%).
The climate creates a surface similar to Earth including sand dunes, rivers, lakes (probably liquid methane) and seas. The temperature is about 179°C. The clouds act as an anti-greenhouse: deflecting Sun rays back and preventing heat from getting through.