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Topic: Umbriel (moon)


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In the News (Sun 18 Aug 19)

  
  Uranus' Moon Umbriel
Umbriel [UM-bree-ul] is the darkest satellite of Uranus.
The surface of Umbriel appears to be old with large craters and does not change much from one location to another.
This image is a polar stereographic projection of the southern hemisphere of Umbriel.
www.solarviews.com /eng/umbriel.htm   (255 words)

  
  Umbriel (moon) - Wikipedia, the free encyclopedia
Umbriel (um'-bree-ul) is a moon of Uranus discovered on 1851-10-24 by William Lassell.
The name "Umbriel" and the names of all four satellites of Uranus then known were suggested by John Herschel in 1852 at the request of Lassell ([2]).
Umbriel is the 'dusky melancholy sprite' in Alexander Pope's The Rape of the Lock, and the name suggests the Latin umbra, shadow.
en.wikipedia.org /wiki/Umbriel_(moon)   (284 words)

  
 Umbriel
Umbriel is a character in Alexander Pope's The Rape of the Lock.
Umbriel and Oberon appear quite similar though Oberon is 35% larger.
All of Uranus' large moons are a mixture of about 40-50% water ice with the rest rock, a somewhat larger fraction of rock than Saturn's large moons such as Rhea.
www.seds.org /nineplanets/nineplanets/umbriel.html   (140 words)

  
 Encyclopedia: Umbriel (moon)   (Site not responding. Last check: 2007-10-15)
Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees.
Moons of solar system scaled to Earths Moon The common noun moon (not capitalized) is used to mean any natural satellite of the other planets.
Umbriel is 1.03 times the diameter of Ariel (a satellite of Uranus).
www.nationmaster.com /encyclopedia/Umbriel-(moon)   (1093 words)

  
 Uranus' natural satellites - RecipeFacts   (Site not responding. Last check: 2007-10-15)
The flyby of the Voyager 2 space probe in January 1986 led to the discovery of a further 10 moons, and another satellite S/1986 U 10 was later found after studying old Voyager photographs.
Unlike most planetary moons, which are named from antiquity, all the moons of Uranus are named after characters from the works of Shakespeare and Alexander Pope.
Moons massive enough for their surfaces to have collapsed into a spheroid are highlighted.
www.recipeland.com /encyclopaedia/index.php/Uranus%27_natural_satellites   (281 words)

  
 Umbriel compared to the Moon   (Site not responding. Last check: 2007-10-15)
Umbriel is 7.73 times the diameter of Puck (a satellite of Uranus).
Umbriel is 17.5 times the diameter of Belinda (a satellite of Uranus).
Umbriel is 36.5 times the diameter of Helene (a satellite of Saturn).
ic-www.arc.nasa.gov /projects/bayes-group/Atlas/size/Umbriel/Moon.html   (131 words)

  
 Umbriel
Umbriel is a satellite of the planet Uranus.
Compared with the satellites of other planets of the solar system, Umbriel is a large Moon with a diameter of 1169 km and a mass of 1.27E+21 kg kg.
Umbriel is an average distance of 266000 km from Uranus and completes its revolution of Uranus in 4.14 days.
www.absoluteastronomy.com /moons/umbriel.htm   (64 words)

  
 Encyclopedia: Trinculo (moon)   (Site not responding. Last check: 2007-10-15)
Atmospheric pressure 0 kPa Cordelia (kor-dee-lee-a) is the innermost moon of Uranus.
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.
No moons have moons of their own; the tidal effects of their primaries make orbits around them unstable.
www.nationmaster.com /encyclopedia/Trinculo-(moon)   (1289 words)

  
 BBC - Science & Nature - Space - Umbriel
Umbriel is a moon that orbits the planet Uranus.
Umbriel is made mostly of rock and water ice.
Because the path of the moons is at right angles to the movement of the rest of the planets, you'll need to plan your arrival on Ariel well.
www.bbc.co.uk /science/space/solarsystem/uranus/umbriel.shtml   (305 words)

  
 Astronomy Answers: Universe Family Tree: Moon
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.
The orbits of moons that are far enough away from their planet are influenced by the gravity of the Sun.
The next table shows the moons with the highest and lowest equilibrium temperature (average surface temperature), based on the visual geometric albedo of the moons, and measured in kelvin (K) and degrees Celsius (°C).
www.astro.uu.nl /~strous/AA/en/boom/maan.html   (914 words)

  
 Uranus: Moons   (Site not responding. Last check: 2007-10-15)
In a departure from the usual practice of naming moons for characters in classic mythology, the moons of Uranus are all named for characters in the writings of William Shakespeare and Alexander Pope.
Miranda is the smallest and innermost of Uranus’ outer moons.
Though this tiny moon was recorded in photos by Voyager 2 in 1986, it was not noticed until 1999, when it was discovered via careful analysis of the Voyager photos by Erich Karkoschka of the Lunar and Planetary Laboratory in Arizona.
www.space.com /reference/uranus/moons.html   (1447 words)

  
 Wikijunior Solar System/Uranus/Umbriel - Wikibooks, collection of open-content textbooks
Umbriel is made mostly of water ice, followed by silicate rock and methane ice.
Umbriel is named after the "dusky melancholy sprite" in Alexander Pope's The Rape of the Lock, and the name suggests the Latin umbra, meaning shadow.
Umbriel was discovered on October 24, 1851 by William Lassell.
en.wikibooks.org /wiki/Wikijunior_Solar_System/Uranus/Umbriel   (260 words)

  
 Tour of the Solar System: Umbriel
As with all of Uranus' moons, Umbriel is believed to be composed of about 50% water ice and 50% rocky material.
Umbriel is about the same size as Ariel and has nearly the same density.
The cratered surface of this moon is relatively featureless.
www.seasky.org /solarsystem/sky3h4.html   (280 words)

  
 Voyager - Science - Planetary Voyage - Uranus - Moons
The large Uranian moons appear, in fact, to be about 50 percent water ice, 20 percent carbon- and nitrogen-based materials, and 30 percent rock.
The darkness of Umbriel's surface may be due to a coating of dust and small debris somehow created near and confined to the vicinity of that moon's orbit.
Voyager images, which showed some areas of the moon at resolutions of a kilometer or less, consists of huge fault canyons as deep as 20 kilometers (12 miles), terraced layers and a mixture of old and young surfaces.
voyager.jpl.nasa.gov /science/uranus_moons.html   (597 words)

  
 Umbriel (moon) - Encyclopedia, History, Geography and Biography
Umbriel is the 'dusky melancholy sprite' in Alexander Pope's The Rape of the Lock, and the name suggests the Latin umbra, shadow.It is also designated Uranus II.
It is mostly composed of water ice, with the balance made up of silicate rock and methane ice.
Umbriel (moon), Name, Physical characteristics, See also, External links and Uranus' moons.
www.arikah.com /encyclopedia/Umbriel_%28moon%29   (310 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)

  
 Welcome to Adobe GoLive 5   (Site not responding. Last check: 2007-10-15)
Umbriel is the third largest moon of Uranus.
Umbriel has many giant craters from impacts of lerge objects.
Umbriel is a character in Pope's The Rape of The Lock.
www.promotega.org /vsu00018/Uranus/Umbriel.html   (51 words)

  
 Uranus Moons
The southern hemisphere of Umbriel displays heavy cratering in this Voyager 2 image, taken Jan. 24, 1986, from a distance of 557,000 kilometers (346,000 miles).
Umbriel is the darkest of Uranus' larger moons and the one that appears to have experienced the lowest level of geological activity.
Umbriel is heavily cratered but lacks the numerous bright-ray craters seen on the other large Uranian satellites; this results in a relatively uniform surface albedo (reflectivity).
www.swim2000.org /uranus_moons.htm   (1156 words)

  
 St Agatha Astronomy Group- Uranus
Although the moon is a little under three hundred miles in diameter, the ridge shown in the picture is taller than Mount Everest here on Earth.
If this is the case, some of the ice in the moon may have melted and smoothed out the surface of the moon and then more recent geological activity may have formed the long, wide grooves we see in the picture.
This moon is almost entirely covered by impact craters, much like most of the other moons in the solar system.
www.thenewstarrymessenger.net /oursolarmain/uranus/uranusmoons.htm   (819 words)

  
 Uranus - Moons   (Site not responding. Last check: 2007-10-15)
Uranus and its five major moons are depicted in this montage of images acquired by the Voyager 2 spacecraft during its January 1986 flyby of the planet.
Umbriel is the darkest of the Uranian moons, and has an icy crust pockmarked by craters.
Ten new moons of Uranus were discovered by Voyager in 1985 and 1986.
www.nasm.edu /ceps/etp/uranus/uran_moons.html   (565 words)

  
 Umbriel   (Site not responding. Last check: 2007-10-15)
This is a collection of images from Voyager 2 of the Uranian moon Umbriel.
Umbriel, 1,200 km in diameter, has a far lower albedo (0.16) than the other major moons of Uranus.
The surface of Umbriel revealed by Voyager was an ancient one.
pages.preferred.com /~tedstryk/umbriel.html   (578 words)

  
 DVDExtra: Uranus and Neptune
The five largest moons of Uranus were known before the Voyager 2 spacecraft encountered the planet in 1986.
Umbriel and Ariel are roughly three-quarters the size of Oberon and Titania.
Umbriel is the darkest of the large Uranian moons.
www.yorkfilms.com /ccdvdextra/uranus.html   (2365 words)

  
 The Umbriel Project   (Site not responding. Last check: 2007-10-15)
Umbriel can best be described as a subset of Modula-2, with some other simplifications designed to minimize the enigmas that Modula-2 seems to create for beginners in areas like I/O and type compatibility.
A monograph on introductory programming in Umbriel, and a large set of worked examples are also available.
The image of Umbriel that appears on this page is one of many placed in the public domain by NASA, and can be found in the NSSDC Photo Gallery.
www.scifac.ru.ac.za /cspt/umbriel.htm   (488 words)

  
 Space Today Online - Solar System - Planet Uranus - Moons
Moon diameters range from a bit fatter than 25 miles up to about 1,100 miles.They circle Uranus in orbits ranging from every eight hours to every 14 days.
That moon probably is the source of the fresh dust that replenishes the ring with matter knocked off the moon by meteoroid impacts.
For instance, the moons Cordelia and Ophelia are shepherds, keeping the eleven large rings around Uranus from spreading into space.
www.spacetoday.org /SolSys/Uranus/UranusMoons.html   (1380 words)

  
 Our Solar System - Planets Alive - Uranus   (Site not responding. Last check: 2007-10-15)
The largest of the newly detected moons, named Puck, is about 150 kilometres (about 90 miles) in diameter, or larger than most asteroids.
Voyager images, which showed some areas of the moon at resolutions of a kilometre or less, consists of huge fault canyons as deep as 20 kilometres (12 miles), terraced layers and a mixture of old and young surfaces.
The particles that make up the rings may be remnants of a moon that was broken by a high-velocity impact or torn up by gravitational effects.
www.dunnbypaul.net /solarsystem/Uranus_C.html   (1240 words)

  
 Umbriel- To Uriel (Megadriel)   (Site not responding. Last check: 2007-10-15)
Umbriel was an angel of the planets allignment....he kept order in gravity and other forces...
Umbriel is an angel of air and water...
He is also said to be one of the angels who assists Gabriel in the assistance of souls in Limbo (ghosts or unbalanced confused spirits)...
s8.invisionfree.com /Megadriel/ar/t42.htm   (207 words)

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