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Topic: Erriapo (moon)

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	Calypso (moon) - Encyclopedia, History, Geography and Biography
		Calypso (kə-lip'-soe, IPA /kəˈlɪpso/, Greek Καλυψώ) is a moon of Saturn.
		The moon Telesto resides in Tethys' leading Lagrangian point, 60 degrees ahead of Tethys.
		Like many other small Saturnian moons and small asteroids it is irregularly shaped by overlapping large craters and appears to also have loose surface material capable of smoothing the appearance of craters.
	www.arikah.com /encyclopedia/Calypso_(moon) (157 words)

	Saturn K-12 Background Information for Lesson Plans & Science Fair Projects
		One theory, originally proposed by Ãdouard Roche in the 19th century, is that the rings were once a moon of Saturn whose orbit decayed until it came close enough to be ripped apart by tidal forces (see Roche limit).
		A variation of this theory is that the moon disintegrated after being struck by a large comet or asteroid.
		Due to the tidal forces of Saturn, the moons are currently not at the same position as they were when they were first formed (for a timeline of discovery dates, see Timeline of natural satellites).
	www.juliantrubin.com /encyclopedia/astronomy/saturn.html (3067 words)

	Twelve New Moons for Saturn - Planetary News \| The Planetary Society
		But astronomers at the University of Hawaii have followed up on many previous moon discoveries with a dozen new satellites at Saturn, bringing the total count to 49 (although the status of three of the new moons identified by Cassini is in doubt).
		In fact, the identification of three of them as moons is not yet certain; they could have just been transient clumps in the rings, long-lived enough for Cassini to spot them in a sequence of ring images, but dissipating later.
		Four are tiny bodies that accompany larger moons in their orbits, sitting in dynamically stable "Lagrange points" 60 degrees ahead of or behind the bigger moons.
	www.planetary.org /news/2005/0503_Twelve_New_Moons_for_Saturn.html (473 words)

	Natural satellite (Site not responding. Last check: 2007-10-08)
		Mercury and Venus have no moons at all, Earth has one large moon, Mars has two tiny moons, and Pluto a large companion called Charon (sometimes considered to be a double planet).
		Several moons are thought to be captured foreign objects, fragments of larger moons shattered by large impacts, or (in the case of Earth's Moon) a portion of the planet itself blasted into orbit by a large impact.
		In addition to the moons of the various planets There are also over 30 known asteroid moons, asteroids that orbit other asteroids.
	natural-satellite.iqnaut.net (433 words)

	Saturn - The Ring Planet - Glossary
		A moon of Saturn was discovered by Richard Waltker (Voyager 1) on December 18, 1966.
		A moon of Saturn was discovered by the P. Laques and J. lecacheus on March 1, 1980.
		In Norse mythology, Skadi was a mountain Giantess and the goddess of the hunt.
	www.ringplanet.net /index.php?document_id=900 (1331 words)

	The Moons of the Solar System — Erriapo (Site not responding. Last check: 2007-10-08)
		The moon of Saturn –; Erriapo (XXVIII) – was previously temporarily designated as S/2000 S10.
		Erriapo is one of the new satellites of Saturn discovered after the long period of 19 years that came after the →Voyager-2 fly-by (1981).
		The moon by this name is in elliptical prograde orbit (→eccentricity e = 0.474) with a →semimajor axis a = 17,616,000 km.
	republika.pl /ksiezyce/saturn/erriapo_en.html (382 words)

	Space Today Online - Moons of the Solar System
		The Moon is one of the larger natural satellites with a diameter of 2,160 miles.
		The moons are 120,000 miles and 131,000 miles from the center of planet Saturn between the moons Mimas and Enceladus.
		The smallest moon is Deimos, at Mars, only seven miles in diameter, although its size now is rivaled by the small shepherd moons discovered by Cassini at Saturn and by others yet to be counted and named in the rings around Jupiter, Saturn and other giant gas planets in the outer Solar System.
	www.spacetoday.org /SolSys/Moons/MoonsSolSys.html (1335 words)

	Natural satellite - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-08)
		Moons orbiting relatively close to the planet on prograde orbits (regular satellites) are generally believed to have been formed out of the same collapsing region of the protoplanetary disk that gave rise to its primary.
		Most regular moons in the solar system are tidally locked to their primaries, meaning that one side of the moon is always turned toward the planet.
		In addition to the moons of the various planets there are also over 80 known moons of the dwarf planets, asteroids and other small solar system bodies.
	enc.qba73.com /link-Moons (2130 words)

	The Stars and Scopes Glossary: API Developer Reference Page
		A moon of Uranus was discovered by Brett J. Gladman, Philip D. Nicholson, Joseph A. Burns, and John J. Kavelaars using the 200-inch Hale telescope on September 6, 1997.
		The shape of the lit portion of the moon or a planetary disk where the lit portion of the disk is less than half the disk surface.
		The week between the Full Moon and the Last Quarter Moon the sunlit side of the Moon is called waning (shrinking) gibbous and is shrinking until the lunar disk is half in sunlight and half in shadow.
	starsandscopes.net /reference.php (9925 words)

	NASA's Solar System Exploration: Planets: Saturn: Moons (Site not responding. Last check: 2007-10-08)
		One moon, Enceladus, is one of the shiniest objects in the solar system.
		It may be that volcanoes on this moon erupted the icy particles that form Saturn's E-ring, and that they continuously snow back down onto its surface.
		Iapetus is among the strangest of Saturn's moons.
	www.ulo.ucl.ac.uk /~diploma/year_one/NASA_SSE/saturn_moons.html (444 words)

	Natural satellite (Site not responding. Last check: 2007-10-08)
		Most moons are assumed to have been formed out of the same collapsing region of protoplanetary disk that gave rise to its primary.
		Most moons in the solar system are tidally locked to their primaries; an exception is Saturn's moon Hyperion, which rotates chaotically due to a variety of external influences.
		The largest moons in the solar system (those bigger than about 3000 km across) are Earth's Moon, Jupiter's Galilean moons Io, Europa, Ganymede, and Callisto, Saturn's moon Titan, and Neptune's captured moon Triton.
	www.casimiro.com /wiki/en/wikipedia/n/na/natural_satellite.html (366 words)

	[13.0] The Exploration Of Saturn (Site not responding. Last check: 2007-10-08)
		However, there was confusion over this discovery at the time, since the orbits of the two moons and their sizes are similar, and nobody was quite sure which was which, or if there was one moon that was being reported as two.
		Hyperion is a lumpy moon with dimensions of 410 by 260 by 220 kilometers.
		The tiny moon Atlas orbits just outside the A Ring, probably acting as a shepherd to define the ring's boundary, while the tiny moon Pan orbits within the Encke division and is almost certainly the cause of it.
	www.vectorsite.net /taxpl_13.html (5935 words)

	On This and Other Moons
		If the sizes of the moons are expressed relative to their primary (the planet they orbit) there are still more surprises.
		Being close to Jupiter (it is the innermost of the Galilean moons) the planet's massive gravity stretches the moon by some 100m and locks its rotation so the same side always faces the planet.
		But nearby moons Europa and Ganymede peturb it when they pass, making the tidal bulges shift and heating the Io's interior with the friction of the flexing.
	www.inconstantmoon.com /cyc_moon.htm (1127 words)

	Phoebe (moon) Encyclopedia Article @ Pheebs.org (Site not responding. Last check: 2007-10-08)
		Iapetus), and is substantially larger than any of the other moons orbiting planets at comparable distances.
		Debris from the biggest impacts may have been the building blocks of the other moons of Phoebe's group—all of which are less than 10 km in diameter.
		By a stroke of good luck, Phoebe happened to be in the best part of its orbit to be photographed by the incoming Cassini probe, which otherwise would not likely have returned pictures much better than Voyager due to Phoebe's distance from Saturn.
	www.pheebs.org /encyclopedia/Phoebe_(moon) (880 words)

	NASA's Solar System Exploration: Planets: Saturn: Moons: Phoebe (Site not responding. Last check: 2007-10-08)
		Unlike most major moons orbiting Saturn, Phoebe is very dark and reflects only 6 percent of the sunlight it receives.
		Phoebe's darkness, in particular, suggests that the small moon comes from the outer solar system, an area where there is plenty of dark material.
		She was the youthful goddess of Earth's Moon, forests, wild animals and hunting.
	www.ulo.ucl.ac.uk /~diploma/year_one/NASA_SSE/saturn_moons_phoebe.html (452 words)

	Exploring the Solar System -- Moons
		Earth's Moon is one of the larger natural satellites with a diameter of 2,160 miles.
		Saturn's moon Titan, shown at left in a Voyager 2 photo, is the second largest moon in the Solar System with a diameter of 3,200 miles.
		The smallest moon is Deimos, one of two moons of Mars.
	www.spacetoday.org /SolSys/ExploringSolarSystem/ExploringMoons.html (280 words)

	Saturn's Moons
		Most of the moons, which are small, were probably captured asteroids, and did not form with Saturn.
		Scientists think that these two moons were once part of a single moon that was later blasted apart.
		This is a unique moon because it has a huge crater that covers fully one quarter of its entire surface.
	filer.case.edu /~sjr16/saturn_moons.html (467 words)

	natural_satellite (Site not responding. Last check: 2007-10-08)
		Of the inner planets, Mercury and Venus have no moons at all; Earth has one large moon ("the Moon" or "Luna"); and Mars has two tiny moons, Phobos and Deimos.
		Moons orbiting relatively close to the planet on prograde orbits (regular satellites) are believed to have been formed out of the same collapsing region of protoplanetary disk that gave rise to its primary.
		For example, in the case of Earth's Moon, a portion of the planet itself might have been blasted into orbit by a large impact.A very different scenario required to explain the origin of the large Neptunian satellites: circular but retrograde orbit of Triton and extremely eccentric but prograde orbit of Nereid.
	www.cruisedates.com /wiki/?title=Natural_satellite (1083 words)

	ESA Science & Technology: Saturn's Moons
		The moon's gravitation influences the edges of the Keeler gap where the ring material is seen to form wavy patterns.
		The moons are approximately 3 kilometres and 4 kilometres across.
		The moons, located 194 000 kilometres and 211 000 kilometres from the planet's centre, are between the orbits of two other saturnian moons, Mimas and Enceladus.
	sci.esa.int /science-e/www/object/index.cfm?fobjectid=35229 (262 words)

	erriapo_(moon) (Site not responding. Last check: 2007-10-08)
		Erriapo (err'-ee-ap'-oe?, ?, Latin ErriapÅ or ErriappÅ), or Saturn XXVIII, is a prograde irregular satellite of Saturn.
		Erriapo was a giant in Gaulic mythology.Erriapo is about 8.6 kilometres in diameter, and orbits Saturn at an average distance of 17,409 Mm in 857.556 days, at an inclination of 38Â° to the ecliptic (24Â° to Saturn's equator), and with an eccentricity of 0.534.
		It is a member of the Gallic group of irregular satellites.
	www.cruisedates.com /wiki/?title=Erriapo_(moon) (101 words)

	Saturn Moons and Rings
		Saturn's moon Titan is one of the few moons in the Solar System with much of an atmosphere.
		The other medium-sized moons of Saturn are Rhea, Dione, Tethys, Enceladus, Janus and Epimetheus.
		Most of the others are small moons which are basically large rocks in space.
	www.windows.ucar.edu /tour/link=/saturn/moons_and_rings.html (268 words)

	The Names of the Moons and Their Meanings
		Io Zeus turned her into a white heifer to hide from Hera, his jealous wife, but was discovered and relentlessly tormented with a gadfly--an ancestor of Heracles.
		Mundilfari A Norse Giant who angered the gods by naming his beautiful children Mani (moon) and Sol (sun); the children were then forced to guide the chariots of their namesakes.
		All of Uranus's moons are named for Shakespeare characters, which is too bad, because there were plenty of Titans and monsters associated with him that could have been used.
	www.fief.org /kathleen/Moons/Moons.html (2514 words)

	Planet Saturn - Moons of the Solar Sytem
		A moon of Saturn was discovered by John Kavelaars in 2000 Erriapo also is designated as "Saturn XXVIII" and "S/2000 S10".
		A moon of Saturn was discovered by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on May 4, 2005.
		A moon of Saturn was discovered by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on June 26, 2006.
	www.planet-saturn.net /index.php?document_id=600 (1684 words)

	SATURN : Part 5
		On the opposing side of this moon is clear evidence of huge cracks and fractures across the surface caused by the impact of some other moon or asteroid in the distant past.
		The moon itself is roughly spherical whose shapes is given as 256x247x245km.
		Unlike most of the larger moons that are continuously facing the same side towards Saturn, Hyperion tumbles end over end in its orbit, which is described as being chaotic and unpredictable.
	homepage.mac.com /andjames/PageSaturn005.htm (4294 words)

	Planet Saturn's Moons: Erriapo
		Erriapo is a moon of the planet Saturn.
		For a listing of other moons, see Moons of the planets.
		This moon is too faint to be viewed in all telescopes.
	www.go-astronomy.com /planets/saturn-moon-erriapo.htm (39 words)

	NASA's Solar System Exploration: Planets: Saturn: Moons: Mimas
		Because Mimas has such a low temperature of about -200° C (-328°F), the impact features may date back to the time of the moon's creation.
		One of the craters, named Herschel, is surprisingly large in comparison to the size of the moon.
		The crater is 130 kilometers (80 miles) wide, one-third the diameter of Mimas.
	solarsystem.nasa.gov /planets/profile.cfm?Object=Mimas (235 words)

	The Library - Astronomy - Saturn
		Saturn's ring system is the most extensive and complex in our solar system; it extends hundreds of thousands of kilometers from the planet.
		In the early 1980s, NASA's two Voyager spacecraft revealed that Saturn's rings are made mostly of water ice, and they found "braided" rings, ringlets, and "spokes" - dark features in the rings that seem to circle the planet at a different rate from that of the surrounding ring material.
		Further study of this moon promises to reveal much about planetary formation and, perhaps, about the early days of Earth as well.
	www.lunaroutpost.com /library/saturn.htm (551 words)

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