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Topic: Methone (moon)


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In the News (Sun 20 Dec 09)

  
  Methone (moon) - Wikipedia, the free encyclopedia
Methone (me-thoe'-nee, IPA: [məˈθoʊni], Greek Μεθωνη) is a very small natural satellite of Saturn lying between the orbits of Mimas and Enceladus.
Methone was one of the Alkyonides, the seven beautiful daughters of the Giant Alkyoneus.
Methone · Pallene · Enceladus · Telesto, Tethys, and Calypso · Helene, Dione, and Polydeuces · Rhea · Titan · Hyperion · Iapetus
en.wikipedia.org /wiki/Methone_(moon)   (398 words)

  
 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)

  
 Phoebe (moon) - Encyclopedia, History, Geography and Biography
Phoebe (fee'-bee, IPA /ˈfiːbi/, Greek Φοίβη) is a moon of Saturn.
The outer moons can be broken down into two groups: Siarnaq's group (Kiviuq, Ijiraq, Paaliaq, Albiorix, Erriapo, Siarnaq and Tarvos) is inclined 33.5-46.5° whilst Phoebe's group (Phoebe, Skathi, Narvi, Mundilfari, Suttungr, Thrymr and Ymir) is retrograde and inclined 134.5-175.5°.
Both groups are fairly to highly eccentric, and none of their moons are expected to rotate synchronously as all the inner moons of Saturn do (except for Hyperion).
www.arikah.net /encyclopedia/Phoebe_(moon)   (908 words)

  
 Astronomy Answers: Universe Family Tree: Moon
The distribution of the known moons over the planets is shown in the following table, which also displays for each planet the last year of the discovery of a moon (per 2006-05-25).
If a certain planet has none of its moons in the top ten, then the moon from that planet that has the characteristic the most is also mentioned in the table.
This table shows the moons that are on average the furthest from or the closest to the center of their planet, measured in units of 1000 km.
www.astro.uu.nl /~strous/AA/en/boom/maan.html   (872 words)

  
 The Moons of the Solar System — Methone   (Site not responding. Last check: 2007-10-05)
Methone was the one of the Alkyonides, the seven beautiful daughters of the Giant Alkyoneos...
    Methone is one of the new satellites of Saturn discovered after the long period of 23 years that came after the →Voyager-2 fly-by (1981). 
    The moon is in circular prograde orbit (→eccentricity e = 0.000) with a →semimajor axis a = 194,000 km.
republika.pl /ksiezyce/saturn/methone_en.html   (444 words)

  
 Saturn: Jewel of the Solar System
Of course, new moons around the outer planets are continually being discovered as spacecraft approach and instrumentation is refined.
But Saturn does have “proper” moons that are large, round, and, well, moonlike: There’s Enceladus, whose highly reflective surface may be covered in ice; Iapetus, an enigma with one bright and one dark face; Mimas, with its huge impact crater telling of a long-ago cataclysm.
It might seem compelling to reserve the title “moon” for objects with rounded profiles, but again, we have no system for determining when a body is too lumpy to be called a moon.
www.exploratorium.edu /saturn/moon.html   (1530 words)

  
 The Stars and Scopes Glossary: API Developer Reference Page
A moon of the planet Pluto, also known as Pluto I. Charon is the largest of Pluto's Moons and was discovered in 1978 by James Christy.
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)

  
 Saturn - The Ring Planet - Glossary   (Site not responding. Last check: 2007-10-05)
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.
A moon of Saturn was discovered by the Sebastien Charnoz on June 1, 2004.
www.ringplanet.net /index.php?document_id=900   (1331 words)

  
 NASA's Solar System Exploration: Planets: Saturn: Moons: Methone
The moons were first seen by Dr. Sebastien Charnoz, a planetary dynamicist working with Dr. Andre Brahic, imaging team member at the University of Paris.
Scientists expected that moons as small as S/2004 S1 and S/2004 S2 might be found within gaps in the rings and perhaps near the F ring, so they were surprised these small bodies are between two major moons.
The fact that these moons exist where they do might provide limits on the number of small comets in the outer solar system, a quantity essential for understanding the Kuiper Belt of comets beyond Neptune, and the cratering histories of the moons of the giant planets.
solarsystem.nasa.gov /planets/profile.cfm?Object=Sat_Methone   (435 words)

  
 NEWEST SATURN MOONS GIVEN NAMES   (Site not responding. Last check: 2007-10-05)
This latter object is an example of a so-called Trojan moon - it is twinned with a larger satellite in orbit around the planet.
Trojan moons are found near stable "Lagrange points" - places where the gravitational pull of the planet and the larger satellite become balanced.
The Trojans are situated 60 degrees ahead or behind the larger moon in its orbit (in the case of Polydeuces, the larger moon is Dione).
www.surfingtheapocalypse.net /cgi-bin/forum.cgi?read=58850   (354 words)

  
 Natural satellite   (Site not responding. Last check: 2007-10-05)
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.
Most moons in the solar system are tidally locked to their primaries; an exception is Saturns moon Hyperion, which rotates chaotically due to a variety of external influences.
natural-satellite.iqnaut.net   (433 words)

  
 Methone (moon) - TvWiki, the free encyclopedia   (Site not responding. Last check: 2007-10-05)
Methone (me-thoe'-nee, Greek Μεθωνη) is a natural satellite of Saturn.
Methone orbits Saturn at a distance of about 194 Mm (thus its period is 1.009 d) and is about 3 kilometres in diameter.
The name Methone was approved by the IAU Working Group on Planetary Science Nomenclature on January 21, 2005.
www.tvwiki.tv /wiki/Methone_(moon)   (187 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)

  
 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)

  
 Cassini-Huygens: Moons
Methone is a tiny moon orbiting Saturn between Mimas and Enceladus.
Methone may be the same object that was spotted in a single image taken by NASA's Voyager spacecraft in the '80s, at that time known as S/1981 S14.
Determine the bulk composition and internal structure of Methone
saturn.jpl.nasa.gov /science/moons/moonDetails.cfm?pageID=22   (122 words)

  
 Saturn: Jewel of the Solar System
Temporarily dubbed S/2004 S7 through S/2004 S18, the moons were first seen in December 2004, but the astronomers observed them for the first few months of 2005 with a variety of powerful telescopes before announcing their find.
Polydeuces is interesting because it’s a Trojan moon, a moon that travels in the same orbit as a larger moon, either 60 degrees ahead of it or behind it.
Scientists think that other small moons will be found in gaps between the rings, and they plan, in particular, for Cassini to go moon hunting in the area between the A Ring and the F Ring.
www.exploratorium.edu /saturn/updates.html   (2427 words)

  
 NASA's Solar System Exploration: Planets: Saturn: Moons: Iapetus   (Site not responding. Last check: 2007-10-05)
Two-faced Iapetus (eye-AP-eh-tuss) is one of Saturn's strangest moons.
Half of it is as dark as asphalt, while the other half is as bright as snow.
Saturn was named for the Roman god of agriculture, but many of the planet's moons are named for the Titans and Titanesses of Greek mythology.
www.ulo.ucl.ac.uk /~diploma/year_one/NASA_SSE/saturn_moons_iapetus.html   (271 words)

  
 Adler Planetarium / CyberSpace / Planets / Saturn
Trojan Moons are not named so much for their relationship to Troy, but rather take their name from the unique mathematical nature of their orbits in relation to one another.
This group consists of a cluster of five outer moons far enough away from Saturn in both their orbits and orbital inclinations to be considered a distinct group.
This group of eighteen outer moons is like the Inuit group in that it is classified as a distinct cluster of outer moons.
www.adlerplanetarium.org /cyberspace/planets/saturn/moons.html   (916 words)

  
 Methone - Biocrawler   (Site not responding. Last check: 2007-10-05)
Methone can refer to one of several things:
in Greek mythology, Methone was one of the Alkyonides, the seven beautiful daughters of the Giant Alkyoneus.
You can find it there under the keyword Methone (http://en.wikipedia.org/wiki/Methone)The list of previous authors is available here: version history (http://en.wikipedia.org/w/index.php?title=Methoneandaction=history).
www.biocrawler.com /encyclopedia/Methone   (188 words)

  
 More from Saturn - including the discovery of a "Trojan" moon
Trojan moons are those found near stable "Lagrange points" (see "Notes to Editors") and are situated 60 degrees ahead or behind a larger moon in its orbit around a planet.
The term "Trojan moons" comes from the example of Trojan asteroids that are in the same orbit as Jupiter.
If there is a central planet with a moon in orbit around it then there are five special points (the Lagrange points) where the gravitational effects of the planet and moon are balanced.
www.pparc.ac.uk /Nw/polydeuces.asp   (1128 words)

  
 StarDate Online | Solar System Guide | Saturn
Saturn's rings probably formed when a small moon or a comet passed close to Saturn and was pulled apart by the planet's gravity.
A planet's gravity pulls more strongly on the side of a moon that is facing it than on the side that is away from it.
If a moon passes too close to its parent planet, this difference, called tidal gravity, pulls it apart, turning the moon into cosmic rubble.
stardate.org /resources/ssguide/saturn.html   (847 words)

  
 apostropher: The Spheres
Three newly discovered moons of Saturn were tentatively given the names Methone, Pallene, and Polydeuces.
Polydeuces is a Trojan moon, a three mile wide rock moving in tandem with a larger moon, Dione.
NASA scientists announced they suspect that rapid formation of kidney stones during space travel may be caused by nanobacteria, "a novel self-replicating, mineralizing agent" discovered in the '90s and found in kidney stones.
www.apostropher.com /blog/archives/002292.html   (312 words)

  
 Saturn, moons
Saturn has 56 known moons and several others that have not yet been confirmed.
The latest were discovered by the Cassini spacecraft and announced in 2006.
Four new moons for Saturn (Dec 10, 2000)
www.daviddarling.info /encyclopedia/S/Saturnmoons.html   (141 words)

  
 The Moons of the Solar System — Pallene   (Site not responding. Last check: 2007-10-05)
The moon of Saturn –; Pallene (XXXIII) – It was previously temporarily designated as S/2004 S2.
It was discovered along with Methone using images sent by the  Cassini
    The moon is in circular prograde orbit (→eccentricity e = 0.000) with a →semimajor axis a = 211,000 km.
republika.pl /ksiezyce/saturn/pallene_en.html   (418 words)

  
 ESA Science & Technology: Cassini Tour of Saturn and its Moons
These moons were chosen as data from previous missions suggests they could hold the keys to understanding the Saturnian system and possibly the origins of the Solar System.
At least 30 distant flybys, at altitudes of up to 100 000 kilometres, will be made of other major moons.
In turn these maps can be used in conjunction with the data returned from the Huygens probe to help build up a three-dimensional picture of Titan's surface and atmosphere.
sci.esa.int /science-e/www/object/index.cfm?fobjectid=34962   (341 words)

  
 Cassini finds more rings highlighted by telltale small particles
A second new diffuse but narrow ring is coincident with the orbit of the tiny moon Pallene, also discovered by Cassini's imaging cameras and only 4 kilometers (2.5 miles) across.
Curiously, another similar-sized moon called Methone, discovered earlier in the mission in roughly the same region, does not seem to sport a ring.
Unlike the other diffuse rings, however, Cassini observations have confirmed that the E ring is created by tiny ice particles spewing from surface jets on the geologically active moon Enceladus.
www.eurekalert.org /pub_releases/2006-10/cicl-cfm101106.php   (794 words)

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