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Topic: Trojan moon


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In the News (Fri 18 Dec 09)

  
  Saturn's Trojan Moon Telesto
Telesto [tah-LESS-toh] and Calypso [ka-LIP-so] are called the Tethys Trojans because they circle Saturn in the same orbit as Tethys, about 60 degrees ahead of and behind that body.
Telesto is the leading Trojan and Calypso is the trailing Trojan.
The image was taken with the Cassini spacecraft narrow-angle camera on October 11, 2005, at a distance of approximately 10,424 kilometers from Telesto.
www.solarviews.com /eng/telesto.htm   (210 words)

  
  Trojan moon - Wikipedia, the free encyclopedia
A Trojan moon is a natural satellite of a planet occupying the L
They are named by analogy with the Trojan asteroids, which occupy the L
Four examples are known, all in Saturn's system: Telesto and Calypso bracket Tethys, whilst Helene and the newly discovered Polydeuces bracket Dione.
en.wikipedia.org /wiki/Trojan_moon   (96 words)

  
 Cassini-Huygens: Moons
Polydeuces is an example of a so-called Trojan moon -- it is twinned with a larger moon in orbit around the planet (in the case of Polydeuces, the larger moon is Dione).
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.
saturn.jpl.nasa.gov /science/moons/moonDetails.cfm?pageID=19   (212 words)

  
 SHENANIGANS AND SKULDUGGERY: Newest Saturn Moons Given Names   (Site not responding. Last check: 2007-11-03)
Two moons detected in August have been given the names Methone and Pallene, while another found in October has been provisionally named Polydeuces.
This latter object is an example of a so-called Trojan moon - it is twinned with a larger satellite in orbit around the planet.
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).
cruelkev3.blogspot.com /2005/03/newest-saturn-moons-given-names.html   (442 words)

  
 SPACE.com -- New Moons of Neptune are First Discovered Since 1989
The moons are the first found at Neptune since the Voyager II mission in 1989 and the first detected from the ground since 1949.
Triton, the largest moon of Neptune, orbits in the opposite direction and is thought to be a captured object.
Not a true moon, this is an asteroid trapped in an odd gravitational dance with both Neptune and the Sun.
www.space.com /scienceastronomy/neptune_moons_030113.html   (638 words)

  
 Saturn
Irregular moons are typically suspected of being former asteroids that were captured into orbit by the gravitational influence of their host planet.
However, the common orbits among the small saturnian irregulars indicate that the moons are the remnants of larger moons that were shattered, perhaps by wandering comets or asteroids, while in orbit around Saturn.
If it is a moon, its diameter is estimated to be 4-5km (two to three miles) and it is located 1,000km (620 miles) from the F-ring, Saturn's outermost ring.
mysite.wanadoo-members.co.uk /blobrana/database/saturn.html   (3644 words)

  
 Slashdot | Earth's Second Moon
The moon was previously thought to be an asteroid, but the experts now tell us that Cruithne, which is 3 miles across (4.8km), is in fact a Trojan asteroid, and has an eccentric horseshoe orbit around Earth which takes 770 years to complete.
Born under the wobbling 'moon' Cruithne, you resonate with the sign of the Waffle.
Trojan objects aren't bound to their objects in the same way that moons are.
slashdot.org /science/00/01/25/0826212.shtml   (1776 words)

  
 Results from the Numerical Integration of the orbits of Trojan Asteroids
The Trojan asteroids are a special part of the minor bodies of the solar system.
One of the more interesting ways of visualizing the orbits of Trojan asteroids is to display the orbit in the Sun-planet rotating reference frame.
The L4 region is known as the Greek camp, while the L5 region is known as the Trojan camp.
tycho.usno.navy.mil /trojan.html   (572 words)

  
 NASA's Cassini probe finds oxygen ions near Saturn:- - News - Webindia123.com
They are similar to the moons that shepherd Saturn's F ring, Prometheus and Pandora.
Polydeuces is a companion, or "Trojan" moon of Dione.
Trojan moons are found near gravitationally stable points ahead or behind a larger moon.
news.webindia123.com /news/showdetails.asp?id=69262&cat=Science   (491 words)

  
 Spaceflight Now | Cassini | Cassini finds treasures among Saturn's rings, moons
One of these, reported earlier, populates the same orbit as the small moon Atlas; others lie in various gaps in the rings and may indicate the presence of tiny embedded moons coincident with them or acting as shepherds nearby.
Another reported finding is the observation that the tiny, 5 kilometer (3 mile) -wide moon of Saturn, S/2004 S5 (recently named Polydeuces), discovered by the imaging team and reported late last year, is in fact a Trojan moon of Dione.
Trojan moons are those found near stable 'Lagrange points', situated 60 degrees ahead or behind a larger moon in its orbit around a planet.
spaceflightnow.com /cassini/050224science.html   (1269 words)

  
 Spartanburg SC | GoUpstate.com | Spartanburg Herald-Journal
Trojan originally referred to a citizen of the city of Troy (Ilium) made legendary by the Trojan War (and Trojan Horse).
Trojan Suit, a suit of armor designed by Troy Hurtubise for American and Canadian troops, capable of surviving large caliber round stopping, IED blasts, and melee combat weapons.
Trojan Shrine, is a mascot of University of Southern California
www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Trojans   (459 words)

  
 Rednova NEWS | Cassini Continues Making New Discoveries   (Site not responding. Last check: 2007-11-03)
Phoebe is an outer moon of Saturn and is 220 kilometers (136 miles) across.
Image C is a dark-side image of the outer edge of the Encke gap, with a resolution of about 270 meters (886 feet) pixel, taken 18 degrees upstream from the moon Pan, which inhabits the gap.
Prometheus's orbit is elliptical, and brings the moon as close to Saturn as the outer edge of R/2004 S2 and as far away from the planet as the inner sharp boundary of Saturn's F ring.
www.rednova.com /modules/news/tools.php?tool=print&id=130757   (2683 words)

  
 The BH Press: Fresh Insights into 2001: A Space Odyssey   (Site not responding. Last check: 2007-11-03)
This anagram alludes to the meatless (wooden) Trojan Horse.
So if the monolith is the Trojan Horse and the pain of the astronauts is the pain of the dying Trojans, we should consecutively see (a) the Trojan Horse symbolism, (b) the Ismarus episode symbolism, and (c) some Lotus episode symbolism.
Because Aries' entering the moon (the fertilization scene) precedes the birth of God (Hal-Discovery), I thought this scene might symbolize the biblical scene in which the three wise men see the star that anticipates the birth of God.
www.underview.com /bhpress/wheat/insights.html   (5923 words)

  
 Cassini-Huygens: News
Polydeuces is a companion, or "Trojan" moon of Dione.
Trojan moons are found near gravitationally stable points ahead or behind a larger moon.
The orbit's shape is significant, as it indicates the type of interaction the moon has with the ring material surrounding it.
saturn.jpl.nasa.gov /news/press-release-details.cfm?newsID=547   (621 words)

  
 Gold in Mythology   (Site not responding. Last check: 2007-11-03)
The Trojan war may indirectly have been caused by a golden apple given by Paris, Prince of Troy, to Aphrodite, daughter of Zeus and goddess of love and beauty, who in turn permitted Paris to kidnap Helen, the wife of the Greek hero Menelaus, thereby causing the war.
The myths of early civilisations are perpetuated in the fairy tales of western Europe recalling exploits involving the sun or moon, bold princes, forlorn princesses, or wise shepherds.
A Hungarian fairy tale relates how a little king and his younger brother retrieve the sun, moon and stars after an age of darkness; the king fights for the moon with a dragon in a golden wood near a golden bridge.
info.goldavenue.com /Info_site/in_arts/in_civ/in_myth.html   (1170 words)

  
 More from Saturn - including the discovery of a "Trojan" moon
It is in the same orbit as Dione and along with Helene, is an example of a Trojan moon.
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?Pf=1&Tx=1   (1128 words)

  
 Saturn's Trojan Moon Calypso
Calypso trails Tethys in its orbit by 60 degrees.
Calypso, like many other small Saturnian moons and small asteroids, is irregularly shaped by overlapping large craters.
Although the resolution here is not as high as in Cassini's best images of Pandora and Telesto, this moon appears to also have loose surface material capable of smoothing the appearance of craters.
www.solarviews.com /eng/calypso.htm   (256 words)

  
 Mobile Suit Gundam: Home, Home in Lagrange
L3 was a point in the Moon’s orbit directly opposite the Moon (380,000 kilometers from the Earth and 760,000 kilometers from the Moon).
They are located in the Moon’s orbit, equidistant from both the Earth and the Moon, with which form congruent equilateral triangles.
Lagrange’s theories were confirmed a century later with the discovery of the Trojan asteroids in the orbit of Jupiter in 1906, exactly where L4 and L5 would’ve been had Jupiter been the Moon and the Sun been the Earth.
www.dyarstraights.com /msgundam/lagrange.html   (1012 words)

  
 SPACE.com -- Scrutinizing Saturn: Astronomers Get Best Views Ever
Doug Hamilton of the University of Maryland said the main radiation belts in the rings are comprised mostly of oxygen and water.
The low densities suggest that all the inner moons and satellites were smaller bits and pieces that were gravitationally pulled together; basically orbiting rubble piles.
In this case, the 3-mile-wide (5-kilometer) Polydeuces orbits Saturn in lockstep with the larger moon Dione.
www.space.com /scienceastronomy/050301_saturn_update.html   (932 words)

  
 'Tempting'   (Site not responding. Last check: 2007-11-03)
Like Kaige's previous film, "Temptress Moon" is an indulgence for the senses, rich in period detail and, particularly, the smells, sounds and textures of 1920's Shanghai.
They are torn apart by the addictive opium which serves as their lifeline, and they likewise cling to it with a blinding obedience.
fter acknowledging that "Temptress Moon" is a more personal film than his previous work, he talks about whether or not that description extends beyond the intimacy of the characters on screen to include details of his own life or his family's history.
www.usc.edu /student-affairs/dt/V131/N06/02-tempt.06d.html   (1593 words)

  
 Imperial College London - 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.ic.ac.uk /P6112.htm   (1189 words)

  
 Catalog Page for PIA06639
Saturn's moon Helene, seen here with Saturn's nearly edge-on rings, orbits 60 degrees ahead of Dione and is called a "Trojan" moon.
The tiny moon Polydeuces (about 5 kilometers or 3 miles across, recently discovered by Cassini imaging scientists) is also a Dione Trojan, orbiting 60 degrees behind.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 12, 2005, at a distance of approximately 2 million kilometers (1.2 million miles) from Helene and at a Sun-Helene-spacecraft, or phase, angle of 90 degrees.
photojournal.jpl.nasa.gov /catalog/PIA06639   (205 words)

  
 Some interesting celestial events
The moon moves in a retrograde direction for much of the day, and sometimes is eclipsed by the earth.
If the moon and earth were of the same density, then they would be almost exactly the same apparent size from L2.
It's often said that, because the moon always keeps one face to the earth, that the Earth hangs in one place in the sky as seen from the moon.
www.projectpluto.com /interest.htm   (3811 words)

  
 Classics in Contemporary Culture: Moons - Trojan and Otherwise
Newly discovered moons of Saturn have been named classically (BBC; PhysOrg) [unlike some others recently found--Ymir et al.--as you can see from this factsheet]: Methone, Pallene, and Polydeuces.
As the Iliad deals with the events of the Trojan War, the asteroids came to be collectively known as Trojan asteroids.
Over time, this term has come to be more generally applied to any planetoidal body at the triangular Lagrangian point of any two bodies—besides Jupiter's Trojans, Mars and Neptune have one Trojan each, plus there are Trojan moons around Saturn (Telesto–Tethys–Calypso and Dione–Helene).
semperegoauditor.typepad.com /ccc/2005/02/moons_trojan_an.html   (247 words)

  
 Mission a Trojan Horse?
President Bush's plan to go to the moon and to Mars without much additional funding will force NASA and Congress to make hard choices -- particularly regarding the space shuttle and the hugely expensive International Space Station, observers said.
He noted that a new moon landing would not take place until at least 11 years after the end of a possible second Bush term.
The president's mandate of going to the Mars and moon is certain to put pressure on other NASA projects, such as robotic missions to the planets, asteroid belt and comets -- as well as aeronautics research and securing a replacement for the aging Hubble space telescope, Pike and other observers said.
www.globalsecurity.org /org/news/2004/040116-space-trojan.htm   (1076 words)

  
 Trojan   (Site not responding. Last check: 2007-11-03)
Trojan asteroid, an asteroid in about the same orbit as a planet (usually Jupiter) and about 60° ahead or behind.
Trojan moon, a moon occupying an equilateral Lagrangian point, primarily Saturn system
Trojan, an 0-4-0ST preserved in the Great Western Railway
www.dejavu.org /cgi-bin/get.cgi?ver=93&url=http://articles.gourt.com/%22http%3A%2F%2Farticles.gourt.com%2F%3Farticle%3DTrojan   (194 words)

  
 Wired News: Mars Mission a Trojan Horse?
That means the space agency has to figure out how to carry out the mission -- first a return to the moon and later a trip to Mars -- without a lot of additional money in its budget.
One question that's sure to arise -- assuming Bush's vision for the moon and Mars sticks -- is whether to kill the station and shuttle now, instead of in six to 12 years as the plan currently envisions, said Howard McCurdy, a space historian at American University in Washington.
The current President Bush only signed on to a new moon-Mars plan after assurances from NASA Administrator Sean O'Keefe that the agency had returned to being the can-do outfit that sent men to the moon in the 1960s, McCurdy said.
www.wired.com /news/technology/0,1282,61937,00.html?tw=wn_tophead_3   (768 words)

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