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Iapetus. In Greek mythology, Iapetus ( / aɪˈæpɪtəs /; eye-AP-ih-təs; [1] Ancient Greek: Ἰαπετός, romanized : Iapetós ), [2] also Japetus, is a Titan, the son of Uranus and Gaia [3] and father of Atlas, Prometheus, Epimetheus, and Menoetius. He was also called the father of Buphagus [4] and Anchiale [5] in other sources.
Iapetus was discovered by Giovanni Domenico Cassini, an Italian-born French astronomer, in October 1671. This is the first moon that Cassini discovered; the second moon of Saturn to be discovered after Christaan Huygens spotted Titan 16 years prior in 1655; and the sixth extraterrestrial moon to be discovered in human history.
- 3.26 km/s
- Saturn
- 6700000 km²
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Saturn's third largest moon, Iapetus has a mean radius of 457 miles (736 kilometers) and a density only 1.2 times that of liquid water. It has been suggested that Iapetus (like Rhea) is three quarters ice and one quarter rock. A 3D model of Iapetus, a moon of Saturn. Iapetus orbits at 2,213,000 miles (3,561,000 kilometers) from Saturn.
Oct 5, 2021 · After 350 years, astronomers still can’t explain the solar system’s strangest moon. Saturn’s Iapetus, discovered way back in 1671, has three bizarre features that science still can’t fully ...
- Ethan Siegel
Iapetus is a large astronomical body. It is Saturn’s third-largest moon after Titan and Rhea. This moon is also designated Saturn VIII. It was discovered in the 17th century and is the farthest of Saturn’s major moons. One of the most striking characteristics of this moon is the yin-yang-like color of its surface.
Dec 17, 2004 · One hemisphere of Iapetus is covered with very reflective material while the other hemisphere is covered with some of the darkest material in the solar system. The leading hemisphere of Iapetus (the side that faces the direction of rotation) is very dark, reflecting only about 4 percent of the sunlight that falls on it. The trailing hemisphere reflects about 50 percent of the sunlight that ...
