Phoebe
Related Category: Astronomy: General
(f´b), in astronomy, one of the 18 named moons, or natural satellites, of Saturn.
Phoebe
Saturn IX
Phoebe ("FEE bee") is the outermost of Saturn's known satellites. Phoebe is almost 4 times more distant from Saturn than its nearest neighbor (Iapetus). orbit: 12,952,000 km from Saturn diameter: 220 km mass: 4.0e18 kg ...
Phoebe
Saturn IX
Phoebe [FEE-bee], one of the outer satellites of Saturn, was discovered by William H. Pickering from a photographic plate taken on the night of August 16, 1898 with a 24-inch refracting telescope located in Areguipa, Peru.
Phoebe Cary was an American poet, and the younger sister of poet Alice Cary . The sisters co-published poems in 1849, and then each went on to publish volumes of her own....
Robert W. Cary
Samuel Fenton Cary
Samuel Fenton Cary ...
Phoebe flyby
On June 11, 2004, Cassini flew by the moon Phoebe. This was the first opportunity for close-up studies of this moon since the Voyager 2 flyby.
Phoebe
The outermost satellite of Saturn, discovered by Pickering in 1898. Period 550 days retrograde: radius about 100 km.
SX Phoenicis ...
PHOEBE
Phoebe is one of the smaller of the . Phoebe has an almost circular shape and a reddish color. It rotates on its axis every 9 hours, unlike the other moons of Saturn (except ) which always show the same face to Saturn.
Phoebe travels around the ringed planet in the opposite sense to all the other moons suggesting it may have been captured from solar orbit. Cassini's images of Phoebe showed it to be heavily cratered and irregular in shape.
PHOEBE
Phoebe is one of the smaller of the 18 moons of Saturn. Phoebe has an almost circular shape and a reddish color.
Phoebe is 4 times more distant from Saturn than Iapetus its nearest neighbor. This small world was discovered by Pickering in 1898.
Phoebe
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Phoebe: Saturn's moon
Pioneer: Probe to the gas giants
Planet: Derived from the Greek meaning 'wanderer', a planet is a body orbiting a star that is not a star itself.
Phoebe is almost four times farther from Saturn than its nearest major neighbor, Iapetus, and substantially larger than any of the other moons orbiting at comparable distances. It's only about 140 miles in diameter.
Phoebe is also unusual in that it is very dark. It reflects only 6% of the sunlight it receives. Phoebe's darkness and retrograde orbit suggest that it is most likely a captured object.
Phoebe (NASA Thesaurus / NASA SP-7, 1965) A satellite of Saturn orbiting at a mean distance of 12,960,000 kilometers. Phoenix (NASA SP-7, 1965) (abbr Phe, Phoe)
See constellation.
For example, Jupiter's moon Himalia, Saturn's moon Phoebe and Neptune's moon Nereid have rotation period in the range of 10 hours compared with their orbital periods of hundreds of days.
Satellites of satellites ...
In 1899 William Henry Pickering discovered Phoebe, a highly irregular satellite that does not rotate synchronously with Saturn as the larger moons do.
For the entire 20th century, Phoebe stood alone among Saturn's known moons in its highly irregular orbit. Beginning in 2000, three dozen additional irregular moons have been found using ground-based telescopes.
One of Saturn's farthest moons, Phoebe, circles within the newfound ring in the same direction, and is likely the source of its material - ice and dust particles that were easily detected by Spitzer's infrared capabilities.
Although 220 km (137 miles) in diameter, the largest outer moon, Phoebe, is dark with a retrograde, highly inclined orbit and so may be a captured icy body from the Edgeworth-Kuiper Belt rather than a moon that formed with the giant planet.
SATURN S_RINGS SYSTEM MIMAS ENCELADUS TETHYS DIONE RHEA TITAN HYPERION IAPETUS PHOEBE JANUS EPIMETHEUS PANDORA CALYPSO HELENE TELESTO or SATURN S_RINGS SYSTEM MIMAS ENCELADUS TETHYS DIONE RHEA TITAN HYPERION IAPETUS PHOEBE JANUS EPIMETHEUS PANDORA ...
This dark region and the rotation of the satellite are the cause of the variations of brightness that were noticed by Cassini in 1671. Phoebe, the farthest satellite, moves in a retrograde orbit that is highly inclined to Saturn's equator.
The source of the ring's material seems to be Saturn's outer moon Phoebe, which orbits the planet at an average distance of 215 times the radius of Saturn. If space rock hits Phoebe the impact may generate the debris which has made the ring.
Idas and Lynceus (who were also members of the Argo's crew) were engaged to Phoebe and Hilaira, but Castor and Polydeuces carried them off. Idas and Lynceus gave pursuit and the two sets of twins fought it out.
La Fundación Hearst, mediante una concesión al Fondo Phoebe Apperson Hearst de la Sociedad Astronómica del Pacífico (SAP)
El Fondo en Memoria a Bart Bok de la SAP
Dotación del Fondo Charles H. Adams de la SAP ...
The outermost small moons, Hyperion and Phoebe, were discovered in the nineteenth century, in 1848 and 1898, respectively. The others were first detected in the second half of the twentieth century.
The dark side may be due to many tiny impacts with mini meteorites kicked up by debris kicked up by meteorites colliding with Phoebe. This could be seen as the largest game of billiards in the solar system.
of the names are possibly familiar to you - Pan, Daphnis, Atlas, Prometheus, Pandora, Epimetheus, Janus, Mimas, Methone, Pallene, Enceladus, Tethys, Telesto, Calypso, Dione, Helene, Polydeuces, Rhea, Titan, Hyperion, Iapetus, Kiviuq, Ijiraq, Phoebe, ...
The first proposes that dark material from Phoebe, a dark exterior moon, falls onto Iapetus from orbit. The second model says that the dark material erupted from the interior of Iapetus into a low area in the leading hemisphere.
Saturn's known moons are (from nearest to furthest from the planet): Pan, Atlas, Prometheus, Pandora, Epimetheus, Janus, Mimas, Enceladus, Tethys, Telesto, Calypso, Dione, Helene, Rhea, Titan, Hyperion, Iapetus, and Phoebe.
This sharing of orbits had not been seen before the detailed investigation of Saturns system. Hyperion rotates chaotically because of the influence of Titan's gravity and a highly eccentric orbit. The outermost satellite, Phoebe, ...
Triton is presumably another of these large icy planetesimals, captured into orbit by Neptune in the planet's early history. Chiron, believed to be a giant comet, and Phoebe, a satellite of Saturn, represent somewhat smaller examples of such objects.
Exceptions occur in the case of the satellites of Uranus, which are nearly perpendicular to the plane of the orbit. The satellite of Neptune, and one satellite, Phoebe, of Saturn, are also quite exceptional, the direction of motion being retrograde.
 See also: Saturn, Earth, Orbit, Solar, Moon
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