Rhea Moon

Rhea is Saturn’s second largest moon and is the ninth largest moon in the solar system. Rhea was discovered in 1672 by Giovanni Domenico Cassini and was the third of Saturn’s moons to be found. In addition to a very thin atmosphere (exosphere) Rhea may also have a tenuous ring system, although this has not been confirmed.

Rhea Moon Profile

Diameter:1,528.6 km
Mass:2.31 × 10^21 kg (3.1% Moon)
Orbits:
Saturn
Orbit Distance:
527,068 km
Orbit Length:
4.5 days
Surface Temperature:-179 to -220 °C
Discovery Date:December 23, 1672
Discovered By:G.D. Cassini

Rhea Diagrams

Rhea Size

Rhea size compared to the Moon and Earth

Saturn Moon Sizes

Saturn’s moons size comparison (Pandora, Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion, Iapetus and Phoebe)

Sources:
Image – http://photojournal.jpl.nasa.gov/catalog/PIA07763
Profile – http://solarsystem.nasa.gov/planets/rhea, http://nssdc.gsfc.nasa.gov/planetary/factsheet/saturniansatfact.html