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Topic: Nereid (moon)


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In the News (Sun 29 Nov 09)

  
  Nereid   (Site not responding. Last check: 2007-11-02)
Nereid is any one of the sea nymphs, the 50 daughters of Nereus and Doris.
Nereid's orbit is the most highly eccentric of any planet or satellite in the solar system; its distance from Neptune varies from 1,353,600 to 9,623,700 kilometers.
Nereid's odd orbit indicates that it may be a captured asteroid or Kuiper Belt object.
www.seds.org /billa/tnp/nereid.html   (90 words)

  
 Nereid
Nereid was discovered on May 1, 1949 by Gerard P. Kuiper.
This unusual orbit suggests that Nereid may be a captured asteroid or Kuiper Belt object, or possibly that it was perturbed during the capture of Neptune's largest moon Triton.
Nereid's surface is somewhat more reflective than that of our own Moon and about twice as reflective as that of the six inner moons of Neptune.
www.daviddarling.info /encyclopedia/N/Nereid.html   (227 words)

  
 Nereid, a Moon of Neptune
Neptune II Nereid [NEER-ee-ed] was discovered in 1949 by astronomer Gerard Kuiper.
The photos show that the moon's surface reflects about 14 percent of the sunlight that strikes it, making it somewhat more reflective than Earth's Moon, and more than twice as reflective as Proteus.
Nereid's orbit is the most eccentric in the solar system.
www.solarviews.com /eng/nereid.htm   (118 words)

  
 Catalog Page for PIA00054
Nereid, the last satellite of Neptune to be discovered before Voyager's recent discoveries, was first seen by Gerard Kuiper in 1949.
This Voyager view of Nereid was obtained on Aug. 24, 1989 at a distance of 4.7 million kilometers (2.9 million miles).
Nereid is about 170 kilometers (105 miles) across and reflects about 12 percent of the incident light.
photojournal.jpl.nasa.gov /target/Nereid   (135 words)

  
 Did the Moon make life possible on Earth ?
Many people assume that the Moons' gravitational force is merely limited to effecting the ocean tides, but the tidal effect goes to the very core of the Earth, causing our planet to ocillate in its orbit.
The Moon's role in shielding the Earth from bombardment was non-existant for the first several hundred million years; the surface of the Earth was repeatedly reduced to a magma ocean several (hundred?) km deep in this period of late heavy bombardment.
Recent calculations have shown that without the Moon, the gravitational effects of Jupiter and the Sun would have caused the Earth's tilt to wander chaotically over a wide range, producing enormous changes in climate and a hostile environment for the development of complex life.
www.physicsforums.com /showthread.php?p=158499   (2341 words)

  
 Nereid (moon)
It was the outermost of Neptune's known moons for a long time (S/2002 N 1 through S/2003 N 1 have since taken that honour), and is the third largest, with a diameter of 340 km.
The unusual Nereidian orbit suggests that it may be a captured asteroid or Kuiper belt object, or possibly that it was perturbed during the capture of Neptune's largest moon Triton.
Nereid was too far to be properly imaged by the Voyager 2 probe as it visited the Neptune system in 1989.
www.mlahanas.de /Greeks/Astro/Nereid.html   (242 words)

  
 Sea and Sky's Tour of the Solar System: Other Neptunian Moons
These moons are extremely small, and most were not discovered until the Voyager 2 encounter with Neptune in 1989.
This moon was one of several discovered by Voyager 2 in 1989.
Nereid is famous for having the most eccentric orbit of any moon in the solar system.
www.seasky.org /solarsystem/sky3i3.html   (720 words)

  
 Nereid
Nereid is a satellite of the planet Neptune.
Compared with the satellites of other planets of the solar system, Nereid is a medium-sized Moon with a diameter of 340 km and an unknown mass.
Nereid is an average distance of 5513400 km from Neptune and completes its revolution of Neptune in 360.14 days.
www.absoluteastronomy.com /moons/nereid.htm   (61 words)

  
 Nereid Moon
Nereid ("NEER ee ed") is the outermost of Neptune's known moonss and the third largest, with...
Nereid that was in the deep salt sea.....
Nereid and were then disturbed in their orbits by the capture of Triton from the...
www.netactics.co.uk /nereid_moon.html   (313 words)

  
 [No title]
TRITON: Triton, the largest of Neptune's moons (almost the size of earth's moon) that circles the planet in a retrograde direction which is the direction opposite to the rotation of the planet it's orbiting, at a steeply inclined orbit of 157 degrees.
This is because it is spinning in the wrong direction and this fact, when combined with that of the moon's strong tidal interaction with Neptune, the moon's orbit is slowly decaying.
Nereid's orbit is so highly eccentric its distance from Neptune varies from 1,353,600 to 9,623,700 kilometers, and it requires 360 days to orbit Neptune.
patlabor2.tripod.com /moons.html   (538 words)

  
 The Moons of the Solar System — Nereid   (Site not responding. Last check: 2007-11-02)
The moon of Neptune –; Nereid (II) – was discovered in 1949 G.
By the time of the flyby the moon was a distance of almost 5 million kilometers so the probe was not able to take high resolution photos nor execute any other kind of survey e.g.
It is presumed that Nereid is shaped irregularly (like most of the moons of that size) which might have caused the change in its brightness.
republika.pl /ksiezyce/neptune/nereid_en.html   (426 words)

  
 Neptune: Moons   (Site not responding. Last check: 2007-11-02)
In August of that year Voyager 2 provided evidence of 6 more moons, including confirmation of a tiny moon (Larissa) which had been hinted at by a chance star occultation in 1981.
Nereid is a small moon that orbits Neptune in an extremely unusual orbit.
It is the most eccentric orbit of any planet or moon in the solar system, at its farthest distance being almost 8 times as far from Neptune as its closest approach.
dev.space.com /reference/neptune/moons.html   (1070 words)

  
 Nereid
Of the 8 moons it is the farthest from Neptune, with a standoff distance of 5,513,400 km.
Nereid is one of the small moons, and is about as long as the distance from Los Angeles to San Francisco with a diameter of 340 km (226 mi).
Nereid is one of the small moons, and is about as long as the distance from Los Angeles to San Francisco.
www.windows.ucar.edu /neptune/moons/nereid.html   (284 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)

  
 Astronomy For Kids -The Moons of Neptune - KidsAstronomy.com
For that reason most of It's moons were not discovered until 1989 when NASA sent a satellite to explore the world.
Naiad is the closest moon to the surface of Neptune.
Nereid is the outermost of Neptune's moons, and the third largest.
www.kidsastronomy.com /neptune/moons.htm   (469 words)

  
 Nereid compared to the Moon   (Site not responding. Last check: 2007-11-02)
Nereid is 1.07 times the diameter of Hyperion (a satellite of Saturn).
Nereid is 1.95 times the diameter of Puck (a satellite of Uranus).
Nereid is 9.2 times the diameter of Helene (a satellite of Saturn).
ic-www.arc.nasa.gov /projects/bayes-group/Atlas/size/Nereid/Moon.html   (144 words)

  
 [No title]
The nereid was an attractive race living in the Mediterrean and Aegean Seas.
The eighth moon, Nereid, has a highly elliptical orbit that causes it to swing around Neptune at various distances.
Thy were dancing and playing, when suddenly Eris, the goddess of strife, who was angry because she had not been invited, threw a golden apple into their midst crying, "The fairest shall have it!" Now Hera, Aphrodite, and Athena each thought herself the prettiest, so they all ran to pick it up.
www.lycos.com /info/nereid.html   (526 words)

  
 SparkNotes: Neptune: Neptune's Moons
Neptune has eight moons, but only two of them are bigger than asteroids.
Modern theories of the formation of planets and their moons predict that the moons form out of the same primordial nebula as the planet with which they are associated: this would mean that the moons' orbits should be oriented in nearly the same direction as the planet's axis of rotation.
Nereid's very elongated orbit of could possibly result from Triton's "capture" as well: this event may have caused havoc in the system of moons that was forming around Neptune, and may have distorted Nereid's orbit to its present shape.
www.sparknotes.com /astronomy/neptune/section5.rhtml   (515 words)

  
 Neptune's Natural Satellites   (Site not responding. Last check: 2007-11-02)
Each moon has its own page that lists the statistics on discovery, discovery date, mass, mean density, rotational period, orbital period, mean orbital velocity, orbital eccentricity, orbital inclination, visual geometrics albedo and magnitude.
Neptune: Moons - This is a NASA website that gives information on Neptune’s moons as well as all the other planets in our solar system.
Nereids are the fifty daughters of Nereus and Doris who live in the Mediterranean Sea.
www.kn.pacbell.com /wired/fil/pages/listneptuneal.html   (1652 words)

  
 NASA's Solar System Exploration: Planets: Neptune: Moons: Nereid
Nereid is about 340 kilometers (210 miles) in diameter and is so far from Neptune that it requires 360 days to make one orbit.
The photos show that the moon's surface reflects about 14 ' percent of the sunlight that strikes it, making it somewhat more reflective than Earth's Moon, and more than twice as reflective as Proteus.
Nereid's orbit is the most eccentric of any moon in the solar system.
solarsystem.nasa.gov /planets/profile.cfm?Object=Nep_Nereid   (130 words)

  
 Space Today Online - Solar System - Exploring Neptune - Moons
Triton, Jupiter's moon Io and the planet Venus are the only bodies in the Solar System outside of Earth that are known to be volcanically active at the present time.
Nereid's odd orbit suggests it might be a captured asteroid.
That is slightly larger than Nereid, but Proteus is a much darker body, reflecting only about six percent of the sunlight that strikes it.
www.spacetoday.org /SolSys/Neptune/NeptuneMoons.html   (567 words)

  
 NEPTUNE : Part 2
All the moons of Neptune have names adopted from the many water and sea nymphs, who are imagined as either spirits or higher beings than Man, but never as true gods.
Nereid is a small satellite that orbits Neptune in almost exactly one year.
There is little known about this moon, being roughly estimated as 340 km sized moon, which was found as an oddly flattened or cigar-shaped by Voyager 2 when viewed at some distance.
homepage.mac.com /andjames/PageNeptune002.htm   (2046 words)

  
 ASTRONOMY (SATELLITES OF NEPTUNE)   (Site not responding. Last check: 2007-11-02)
Neither Triton nor Nereid travels in the plane of the planet's equator; Triton's orbital plane is at an angle of about 20 degrees to Neptune's equator, while Nereid's is at an angle of about 30 degrees.
Triton is the only large moon in the solar system with a retrograde orbit; that is, it travels in the direction opposite the planet's rotation.
* Nereid, which is between 300 and 1,100 kilometers (190 and 680 miles) in diameter, travels around Neptune in a highly elliptical orbit that ranges from 1,390,000 to 9,635,000 kilometers (860,000 to 5,990,000 miles).
vesuvius.jsc.nasa.gov /er/seh/satneptune.html   (746 words)

  
 Moons of Uranus and Neptune in 2MASS   (Site not responding. Last check: 2007-11-02)
None of the other minor moons were detected, which is consistent with their small sizes and low albedos.
These calculations suggest that the remaining 10 moons of Uranus range from 6 to 10 magnitudes fainter than Ariel, or about 19th magnitude at best; and that (with the exception of Nereid) the last 6 moons of Neptune should be 6.7 to 11 magnitudes fainter than Triton, or again about 19th magnitude at brightest.
Neptune's moon Nereid is predicted to have a J magnitude of 17.4, which could be bright enough to detect.
spider.ipac.caltech.edu /staff/nelson/urnepmoons/urnepmoons.html   (261 words)

  
 Zoom Astronomy Glossary: N
It is a cold, gaseous giant with a hazy atmosphere and is orbited by eight moons and three narrow, faint rings.
It is the smaller of Neptune's 2 larger moons.
The new moon is the phase of the moon when the moon is not visible from Earth, because the side of the moon that is facing us is not being lit by the sun.
www.enchantedlearning.com /subjects/astronomy/glossary/indexn.shtml   (1451 words)

  
 Issac Asimov moon planet theory
If they are, then, the moon is not a true sattilite of earth, and would fall into the planet catagory, or atleast something between a planet and a satillite.
If they are, then, the moon is not a true satellite of earth, and would fall into the planet catagory, or at least something between a planet and a satellite.
The crucial point is that the moon's orbit with respect to the sun is concave toward the sun at all points, even those at which it is between Earth and Sun.
www.physicsforums.com /showthread.php?p=77225   (924 words)

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