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Topic: Siarnaq moon


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In the News (Fri 1 Jan 10)

  
  Siarnaq (moon) - Wikipedia, the free encyclopedia
Siarnaq (see'-ar-naak, IPA /ˈsiːɑrnɑk/), or Saturn XXIX, is a prograde irregular satellite of Saturn.
Siarnaq is about 32 kilometres in diameter, and orbits Saturn at an average distance of 17,906 Mm in 894.542 days, at an inclination of 46° to the ecliptic (60° to Saturn's equator), and with an eccentricity of 0.479.
Named after the giant Siarnaq (also known as Sedna) in Inuit mythology, it is a member of the Inuit group of irregular satellites.
en.wikipedia.org /wiki/Siarnaq_(moon)   (123 words)

  
 The Ultimate 1 E4 m - American History Information Guide and Reference
20 km — diameter of Leda, one of Jupiter's moons
36 km — diameter of Lysithea, one of Jupiter's moons
66 km — diameter of Naiad, the innermost of Neptune's moons
www.historymania.com /american_history/1_E4_m   (309 words)

  
 Saturn's natural satellites - Wikipedia, the free encyclopedia
Moons massive enough for their surfaces to have collapsed into a spheroid are highlighted in light purple.
The Inuit group are five prograde outer moons that are similar enough in their distances from Saturn and their orbital inclinations that they can be considered a group.
The Norse group are 18 retrograde outer moons that are similar enough in their distance from Saturn to be considered a group.
en.wikipedia.org /wiki/Saturn's_natural_satellites   (1051 words)

  
 Natural satellite - Biocrawler   (Site not responding. Last check: 2007-10-31)
Most moons are assumed to have been formed out of the same collapsing region of protoplanetary disk that gave rise to its primary.
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 Saturn's moon Hyperion, which rotates chaotically due to a variety of external influences.
www.biocrawler.com /encyclopedia/Natural_satellite   (537 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)

  
 Iapetus (moon) - Wikipedia, the free encyclopedia
Because of this distant, inclined orbit, Iapetus is the only large moon from which the rings of Saturn would be clearly visible; from the other inner moons, the rings would be edge-on and difficult to see.
The dark material might be formed of organic compounds similar to the substances found in primitive meteorites or on the surfaces of comets; Earth-based observations have shown it to be carbonaceous and it probably includes cyano-compounds such as frozen hydrogen cyanide polymers.
A dark ring of material about 100 kilometers in diameter straddling the border between the leading and trailing hemispheres of Iapetus is suggestive of such vulcanism, resembling structures that have formed on the Moon and on Mars as a result of volcanic material flowing into impact craters with a central peak.
en.wikipedia.org /wiki/Iapetus_(moon)   (1754 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)

  
 Titan (moon) - Wikipedia, the free encyclopedia
It is roughly 50% larger than our own moon by diameter, and is larger by diameter and mass than all known dwarf planets.
Titan's diameter and mass (and thus its density) are similar to Jovian moons Ganymede and Callisto.
Though similar in composition to Rhea and the rest of Saturn's moons, it is denser due to gravitational compression.
en.wikipedia.org /wiki/Titan_moon   (3630 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)

  
 The Moons of the Solar System — Siarnaq   (Site not responding. Last check: 2007-10-31)
The moon of Saturn – Siarnaq (XXIX) – was previously temporarily designated as S/2000 S3.
    Siarnaq is one of two new satellites discovered since the →Voyager-2 Saturn system fly-by which occured 19 years ago (1981).
Siarnaq was one of the giants in Eskimo mythology.
republika.pl /ksiezyce/saturn/siarnaq_en.html   (390 words)

  
 search.com - Natural satellite - Search.com Reference
Most moons in the solar system are tidally locked to their primaries, meaning that one side of the moon is always turned toward the planet.
Exceptions are Saturn's moon Hyperion, which rotates chaotically due to a variety of external influences, and the outermost moons of the gas giants, which are too far away to become 'locked' (an example is Saturn's moon Phoebe).
In addition to the moons of the various planets there are also over 80 known moons of the asteroids and other minor planets.
domainhelp.search.com /reference/Natural_satellite   (611 words)

  
 NASA's Solar System Exploration: Planets: Saturn: Moons: Phoebe   (Site not responding. Last check: 2007-10-31)
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)

  
 Saturn
The moons, Rhea and Dione, appear as blue dots to the south and southeast of Saturn, respectively.
Saturn and two of its moons, Tethys (above) and Dione, were photographed by Voyager 1 on November 3, 1980, from a distance of 13 million kilometers (8 million miles).
Two of Saturn's icy moons are visible as tiny starlike objects in or near the ring plane.
www.solarviews.com /eng/saturn.htm   (2183 words)

  
 Mimas (moon)   (Site not responding. Last check: 2007-10-31)
Due to the tidal forces acting on it, the moon is not perfectly spherical; its longest axis is about 10% longer than the shortest.
Herschel's diameter is almost a third of the moon's own diameter; its walls are approximately 5 km high, parts of its floor measure 10 km deep, and its central peak rises 6 km above the crater floor.
Mimas is responsible for clearing the material from the Cassini Division, the gap between Saturn's two widest rings, A Ring and B Ring.
www.tocatch.info /en/Mimas_(moon).htm   (698 words)

  
 Saturn's Ring and Moon Dynamics
When the inner moon has passed conjunction, it is slowed and the outer one speeded, restoring the original orbits.
One intriguing aspect of Saturn's retinue of moons is the three groups of co-orbitals with nearly identical or identical orbital periods.
The phase locking actions of the four are responsible for the trio of objects in Tethys' orbit.
www.geocities.com /syzygywjp/Saturn.html   (1897 words)

  
 eliza history   (Site not responding. Last check: 2007-10-31)
Mercury (planet) and Venus (planet) have no moons at all, Earth has one large moon, Mars (planet) has two tiny moons, and Pluto (planet) a large companion called Charon (moon) (sometimes considered to be a double planet).
Most moons in the solar system are tidal locking to their primaries, an exception is Saturn (planet)s moon Hyperion (moon), 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 Earths Moon, Jupiter (planet)s Galilean moons Io (moon), Europa (moon), Ganymede (moon), and Callisto (moon), Saturn (planet)s moon Titan (moon), and Neptune (planet)s captured moon Triton (moon).
eliza32gb.blogspot.com /2006/04/natural-satellitethe-common-noun-moon.html   (456 words)

  
 Saturn's Moons - Explore the Cosmos | The Planetary Society
As of June 27, 2006, Saturn is known to have 56 moons.
Here, the moons are shown at the same scale of 2 kilometers per pixel.
Retrograde orbit, with an inclination of 135 degrees:
www.planetary.org /explore/topics/saturn/moons.html   (604 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.
When it was discovered in 1978 it was realised that images previously thought to be of just Pluto had actually represented both the planet and its huge moon, and estimates of the planet's size had to be revised downwards.
www.inconstantmoon.com /cyc_moon.htm   (1127 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)

  
 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   (9807 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)

  
 The Stars and Scopes Glossary
Taurus (The Bull) is a zodiacal constellation, that is, it lies across the ecliptic, an imaginary line across the sky that the Sun, Moon and all the planets except Pluto seem to move along.
A moon of Saturn was discovered by Brad Smith, Harold Reitsema, Steven Larson and John Fountain on April 8, 1980.
In Greek mythology, Thyone, alsoo known as Semele, was the daughter of Cadmus and Harmonia and the mother of the goddess Dionysus.
starsandscopes.net /glossary.php?index=T   (903 words)

  
 Saturn Moons and Rings
The moon Titan is one of the few moons in the solar system with a significant atmosphere.
Other unusual moons of Saturn include the "Death Star" shaped Mimas, the half-fl, half-white Iapetus, and the garbage-can shaped Hyperion.
Most of the others are small moons and are essentially large rocks or gravel piles in space.
www.windows.ucar.edu /tour/link=/saturn/moons_and_rings.html&edu=high   (231 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)

  
 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.
For the Saturnian moons it was decided to use the gods of other nationalities and the new ones were taken from Nordic and Inuit (Eskimo) gods.
homepage.mac.com /andjames/PageSaturn005.htm   (4294 words)

  
 Planet Saturn's Moons: Siarnaq
Siarnaq 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 any telescopes.
www.go-astronomy.com /planets/saturn-moon-siarnaq.htm   (39 words)

  
 NASA's Solar System Exploration: Planets: Saturn: Moons: Mimas
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.
This impact probably came close to disintegrating the moon.
solarsystem.nasa.gov /planets/profile.cfm?Object=Mimas   (235 words)

  
 Astronomy Answers: From the Astronomical Dictionary   (Site not responding. Last check: 2007-10-31)
A moon of 40 km diameter at about 17,531,000 km from the planet Saturn.
The gravity at its surface is about 0.0007 times as strong as on Earth.
The moon goes once around its planet in about 867.1 days.
www.phys.uu.nl /~strous/cgi-bin/glossary.cgi?l=en&o=Siarnaq   (64 words)

  
 Saturn's Moons | Saturn Today - Your Daily Source of Saturn News
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.saturntoday.com /moons.html   (564 words)

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