rhea moon mass

Like Jupiter's moon Callisto, Rhea's craters lack the high surface features found in craters on Mercury and the Moon. Rhea is a small, cold, airless body that … It is composed of 75% water ice and 25% rocky material, and has a thin oxygen atmosphere. Universe Today podcasts with Fraser Cain The Guide to Space is a series of space and astronomy poddcasts by Fraser Cain, publisher of Universe Today Podcast Subscription Menu Rhea is Saturn’s second largest moon and is the ninth largest moon in the solar system. Rhea moon is the second-largest Saturnian satellite (only Titan is larger). This low density indicates that it has a rocky core taking up less than one-third of the moon's mass with the rest composed of water-ice. Iapetus is an oddly-coloured and shaped moon of Saturn. Mass: 1.3455 x 10 23 kg: Biggest moon of Saturn and second largest moon in Solar System (after Jupiter's Ganymede). Rhea is the second largest moon of Saturn, but with a mean radius of 475 miles (764 kilometers) it is less than a third the radius of Saturn's largest moon, Titan. Rhea [REE-a] is the largest airless satellite of Saturn.

Among all the moons of the solar system, it's the ninth-largest, and if it weren't orbiting a larger planet, it might be considered a dwarf planet. Rhea is an expert curated resource of biochemical reactions designed for the annotation of enzymes and genome-scale metabolic networks and models. Giovanni Cassini discovered Rhea on Dec. 23, 1672. Of these, Rhea is the second largest – measuring 1,527 km in diameter and 23×10 20 kg in mass – and the ninth largest moon of the Solar System. It is the third-largest moon in the system, and was discovered in 1671 by the astronomer Giovanni Domenico Cassini. Rhea was discovered in 1672 by Giovanni Domenico Cassini and was the third of Saturn’s moons to be found. Cassini view of Rhea's anti-Saturnian hemisphere, showing the moon's two largest impact basins (Mamaldi above and left of center, and adjacent Tirawa to its upper right). For a listing of all moons, see Moons of the Planets. The four moons of Saturn that Cassini discovered were named “Stars of Louis” (Tethys, Lapetus, Rhea, and Dione) to honor the French king. At highest resolution, several long linear features are visible: halfway down from center is Harahvaiti Fossa, while near the limb left of the bottom is Koykamou Catena. Tethys, Dione, and Rhea move in different orbits around Saturn and at different speeds, and on occasion form a right triangle (Figure). The leading hemisphere is heavily cratered and uniformly bright (left). The moon got its name from the Greek mythological character Rhea who is the revered mother of all the gods. Cassini color image of Rhea, showing the wispy trailing hemisphere. Tethys is Saturn's fifth largest moon. A later flyby got much closer over the north pole of Rhea and managed to use the mass spectrometer to confirm that the thin atmosphere had both oxygen and carbon dioxide. Rhea has a diameter of 1,528 km (949 miles) and revolves around Saturn in a prograde, nearly circular orbit at a mean distance of 527,040 km (327,490 miles) and with an orbital period of about 4.52 Earth days. Their masses are 6.2 times 10^20 kg for Tethys, 1.1 times 10^21 kg for Dione, and 2.3 times 10^21 kg for Rhea. Rhea is an icy body with a density of about 1,240 kg/m 3. On the trailing hemisphere of Rhea can be found several bright, wispy lines. Its irregular shape is 331 miles (533 kilometers) in mean radius, with dimensions 669 x 657 x 654 miles (1076.8 x 1057.4 x 1052.6 kilometers). Titan has a thick mostly nitrogen atmosphere (with some methane) and an atmospheric pressure of 1.6 bars (60 percent greater than the Earth's).

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