Iapetus, in astronomy

Iapetus (īăp`ĭtəs), in astronomy, one of the named moons, or natural satellites, of Saturn Saturn, in astronomy, 6th planet from the sun.

Astronomical and Physical Characteristics of Saturn

Saturn's orbit lies between those of Jupiter and Uranus; its mean distance from the sun is c.886 million mi (1.
..... Click the link for more information. . Also known as Saturn VIII (or S8), Iapetus is 907 mi (1460 km) in diameter, orbits Saturn at a mean distance of 2,212,885 mi (3,561,300 km), and has equal orbital and rotational periods of 79.33 earth days. Saturn's third largest moon, it was discovered in 1671 by the Italian-French astronomer Gian Domenico Cassini Gian Domenico Cassini, 1625–1712, was born in Italy and distinguished himself while at Bologna by his studies of the sun and planets, particularly Jupiter; he determined rotational periods for Jupiter, Mars, and Venus.
..... Click the link for more information. . With a density of only 1.1, Iapetus is believed to consist almost completely of water ice. The reflectivity and surface features of its leading and trailing hemispheres are noticeably different. The leading hemisphere is remarkably dark, while the trailing hemisphere is light—the asymmetry is so marked that Cassini wrote that he could see Iapetus on one side of Saturn but not on the other. The trailing hemisphere is also heavily cratered, while the leading hemisphere is not. Unlike all the other moons but Phoebe Phoebe (fē`bē), in astronomy, one of the named moons, or natural satellites, of Saturn .
..... Click the link for more information. , Iapetus's orbit is inclined to the plane of Saturn's equator.

Iapetus, in Greek mythology

Iapetus, in Greek mythology, a Titan. By the nymph Clymene he fathered Atlas, Prometheus, Epimetheus, and Menoetius.

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Iapetus, in astronomy

Astronomical and Physical Characteristics of Saturn

Iapetus, in Greek mythology

Iapetus