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Topic: 253 Mathilde

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	253 mathilde (Site not responding. Last check: 2007-10-20)
		253 Mathilde was visited by the NEAR Shoemaker spacecraft on its way to 433 Eros.
		Mathilde is very dark, fler than coal, and is thought to share the same composition as carbonaceous chondrite meteorites.
		Mathilde's orbit is eccentric, taking it to the outer reaches of the main belt.
	www.yourencyclopedia.net /253_mathilde.html (224 words)

	253 Mathilde -- 253 Mathilde is een planetoïde die zich bevindt in de hoofdg... (Site not responding. Last check: 2007-10-20)
		253 Mathilde is een planetoïde die zich bevindt in de hoofdgordel tussen Mars en Jupiter.
		Mathilde wordt volgens zijn spectrum (dus volgens zijn samenstelling) en zijn albedo lichtweerkaatsing), in gedeeld in het C-type.
		Mathilde is slechts voor de helft in kaart gebracht, maar heeft in het bekende deel minstens 5 kraters van meer dan 20 km doorsnede.
	mathilde.nl.tracking24.net (134 words)

	Asteroid Mathilde
		This image mosaic of asteroid 253 Mathilde is constructed from four images acquired by the NEAR spacecraft on June 27, 1997.
		This view of 253 Mathilde, taken from a distance of about 1,200 km (748 miles), was acquired shortly after the NEAR spacecraft's closest approach to the asteroid.
		A major difference between Ida and Mathilde appears to be the abundance of very large craters: Mathilde has at least 5 craters larger than 20 km in diameter on the roughly 60% of the body viewed during the encounter.
	www.solarviews.com /eng/mathilde.htm (1012 words)

	253 Mathilde (Site not responding. Last check: 2007-10-20)
		253 Mathilde is a main belt asteroid with a relatively small perihelion (1.94 AU)
		The spacecraft NEAR made a flyby of Mathilde on 27 June 1997; NEAR's main mission to orbit the asteroid 433 Eros.
		Mathilde has at least 5 craters larger than 20 kilometers in diameter (and we only got to see a little more than half its surface).
	www.nineplanets.org /mathilde.html (274 words)

	253 MATHILDE FACTS AND INFORMATION
		253 Mathilde is a Main belt asteroid that was visited by the NEAR_Shoemaker spacecraft on its way to asteroid 433_Eros.
		Mathilde is very dark, fler than coal, and is thought to share the same composition as carbonaceous_chondrite meteorites.
		Mathilde is believed to be named after the wife of astronomer Moritz_Loewy.
	www.bellabuds.com /253_Mathilde (227 words)

	First Image of Asteroid 253 Mathilde
		Two different views of asteroid 253 Mathilde were obtained by the NEAR spacecraft on June 27, 1997.
		The image at left was obtained as the spacecraft approached Mathilde with its camera pointed near the direction of the Sun; only a few of the prominent ridges on Mathilde are illuminated.
		Mathilde's irregular shape results from a long history of severe collisions with smaller asteroids.
	www.solarviews.com /cap/ast/mathild5.htm (139 words)

	A surprising encounter of the NEAR kind (Site not responding. Last check: 2007-10-20)
		By measuring the slight acceleration of the craft as it approached Mathilde and the deceleration after it passed, the scientists determined the mass of the asteroid to be about 110 trillion tons.
		Although Mathilde could have been reduced to a pile of rubble by a long history of collisions with other asteroids, it's also possible that its low density is primordial, Veverka says.
		Mathilde's small size and low gravity create a pressure of less than 2 Earth atmospheres at its center, which is not enough to compress loose materials into a solid.
	www.nasw.org /users/sperkins/mathilde.html (503 words)

	Mathilde
		Mathilde is de eerste van de C-types die onderzocht zijn.
		Mathilde heeft op zijn minst 5 kraters die groter zijn dan 20 kilometers in diameter (en er is slechts een beetje meer dan de helft van het oppervlak in kaart gebracht).
		Hoe zijn dergelijke grote kraters kunnen ontstaan zonder dat Mathilde is stukken uiteen is gevallen?
	www.infoster.be /negepl/mathilde.html (258 words)

	253 Mathilde (Site not responding. Last check: 2007-10-20)
		Mathilde is very dark, fler than coal, and is thought to share the same composition as carbonaceous chondrite meteorite s.
		Caroline Mathilde 1751-1775 Caroline Mathilde kom til Danmark som 15-årig, og blev gift med den sindssyge Christian 7.
		Epoke - danske romaner før 1900: Mathilde Fibiger.
	www.serebella.com /encyclopedia/article-253_Mathilde.html (384 words)

	253 Mathilde (Site not responding. Last check: 2007-10-20)
		NASA image of 253 Mathilde Mathilde is very dark, fler than coal, and is thought to share the same composition as carbonaceous chondrite meteorites.
		Mathilde is believed to be named after the wife of astromomer Moritz Loewy.
		Mathilde Mathilde de:Mathilde (Asteroid) fr:253 Mathilde nn:253 Mathilde
	253-mathilde.area51.ipupdater.com (251 words)

	Mathilde Flyby
		A 25-minute flyby of asteroid 253 Mathilde, the largest asteroid ever visited by a spacecraft, is providing scientists with a spectacular look at a small planet more irregularly shaped than they imagined and heavily scarred with craters.
		By the time of the June 27 flyby, ground-based telescopes had determined that Mathilde was one of the darkest objects in the solar system, reflecting only 3 or 4 percent of the light falling on it from the sun.
		Mathilde's collision history may be a factor, but more research needs to be done to determine what role such collisions have played.
	geophysics.ou.edu /solid_earth/readings/mathilde_flyby.html (1065 words)

	NEAR Fast Approaching Asteroid 253 Mathilde (Site not responding. Last check: 2007-10-20)
		The Near Earth Asteroid Rendezvous (NEAR) spacecraft is closing in fast on the main-belt asteroid 253 Mathilde, as scientists prepare for the closest-ever study of an asteroid.
		"Mathilde is a fl asteroid made of carbon-rich rock, believed by many to be the most primitive--least changed in the last 4.5 billion years--material left in the asteroid belt," says Dr. Joseph Veverka of Cornell University, who leads the mission's Science Team.
		Since then ground-based telescopes have been used to determine, among other things, that Mathilde is a C-type asteroid and is one of the darkest objects in the solar system since it reflects only 4 percent of the light falling on it.
	www.jhuapl.edu /newscenter/pressreleases/1998/aster253.htm (922 words)

	GAT - SPLENDIDA E MISTERIOSA MATHILDE! (Site not responding. Last check: 2007-10-20)
		Obiettivo 253 Mathilde, un corpo di gran lunga piu' massiccio di Gaspra ed Ida e, in un certo senso, di gran lunga piu' significativo come rappresentante tipico della classe di oggetti cui appartiene.
		Mathilde venne scoperto nella notte del 12 Novembre 1885 a Vienna da Johann Palisa.
		Un altro dei grandi misteri di Mathilde e' la straordinaria lentezza del suo periodo di rotazione confermata dalla NEAR in 17,4 giorni dopo i primi indizi in proposito acquisiti nel 1995 mediante misure fotometriche (per confronto ricordiamo che Gaspra ruota in circa 7 ore ed Ida in circa 4 ore).
	gwtradate.tread.it /tradate/gat/relazion/mathilde.htm (1860 words)

	p21b in fm97
		These color data indicate that Mathilde is compositionally homogeneous to first order, and that weathering processes do not produce color variations such as those seen on other asteroids observed by spacecraft (Gaspra and Ida; both S-type asteroids).
		Mathilde is distinguished by five craters with diameters of order the object's mean radius.
		The four major imaging science objectives were broad-band imaging at the highest possible resolution, to determine morphology; hemispheric coverage at 500 m/pixel, to determine size, shape, and volume; hemispheric multispectral coverage, to assess evidence for compositional heterogeneity and "space weathering" of the asteroidal regolith; and a search for satellites.
	www.agu.org /cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&range=1&directget=1&application=fm97&database=/data/epubs/wais/indexes/fm97/fm97&maxhits=200&="P21B" (2014 words)

	AmSky - NEAR Makes Historic Valentine's Day Eros Asteroid Encounter (Site not responding. Last check: 2007-10-20)
		Mathilde’s inclination is 6.7 degrees and its albedo is 0.036.
		On the 1997 flyby Mathilde was revealed as a very dark, heavily cratered object measuring 41 by 30 by 28 miles (66 by 48 by 46 kilometers).
		Mathilde showed no color or albedo variations over the 60 percent of its surface that was visible to the NEAR spacecraft.
	www.amsky.com /astronomy/solarsystem/planets/near (5203 words)

	Mathilde Flyby (Site not responding. Last check: 2007-10-20)
		Mathilde has attracted recent attention due to its extremely slow rotation period of 17.5 days.
		Primary science objectives during this 10 km/sec flyby include high-resolution imaging, as well as albedo and spectral mapping of the illuminated surface of the large (50x50x70 km) asteroid.
		Locating Mathilde with sufficient accuracy to insure the highest resolution observations are obtained near closest approach required optical navigation updates of Mathilde's position as late as 12 hours before encounter.
	www.astro.umd.edu /~mcfadden/near/mathilde.html (275 words)

	Mathilde asteroid
		Four more images of asteroid 253 Mathilde take by the NEAR spacecraft are now available on the NEAR home page.
		"Mathilde is a fl asteroid made of carbon-rich rock, believed by many to be the most primitive -- least changed in the last 4.5 billion years -- material left in the asteroid belt," says Dr. Joseph Veverka of Cornell University, who leads the mission's Science Team.
		Mathilde is a C-type asteroid, the most common type of asteroid in the outer belt.
	www.xs4all.nl /~carlkop/nearfas.html (1030 words)

	SPACE.com -- Mathilde's Craters Yield Clues to Asteroid's History
		Mathilde's low density surprised many planetary scientists because asteroids are thought to be composed of mostly-solid rocky material.
		In craters the size of Mathilde's, this ejecta is often kilometers deep, but this asteroid is clean.
		Mathilde might be an early step in the evolution of heavier asteroids, Housen suggests.
	www.space.com /science/solarsystem/mathilde_991111.html (1273 words)

	[No title] (Site not responding. Last check: 2007-10-20)
		We have performed spectrophotometry of the NEAR flyby target 253 Mathilde using 5 filters from 1.25--3.35 microns.
		We find 253 Mathilde to have a spectrum consistent with C-class asteroids in the near-IR, though without the 3-microns water-of-hydration feature commonly (but not always) seen on asteroids of this class.
		We compare Mathilde to plausible meteorite analogs, and find that the surface of this asteroid is not consistent with a surface composition of common carbonaceous chondritic material.
	smass.mit.edu /~andy/matabs.html (136 words)

	Asteroid Mathilde
		Mathilde is classified as a carbon rich C-type asteroid.
		This asteroid is very dark, reflecting only about 4% of the light falling on it, but was imaged easily by the sensitive NEAR multispectral camera.
		Mathilde has more large craters than the other two asteroids.
	www.solarviews.com /germ/mathilde.htm (1012 words)

	Mathilde (Asteroid) - netlexikon (Site not responding. Last check: 2007-10-20)
		(253) Mathilde ist ein Asteroid des Asteroidenhauptgürtels mit einem mittleren Durchmesser von etwa 50 km.
		Mathilde umkreist die Sonne auf einer exzentrischen Bahn, die bis an den äußersten Bereich des Asteroidengürtels heranreicht.
		Die Tatsache, dass Mathilde bei diesem Impaktereignis nicht zerstört wurde, lässt darauf schließen, dass der Asteroid kein kompakter Körper ist, sondern eine Ansammlung von Trümmerstücken, die durch die schwache Schwerkraft zusammen gehalten werden.
	www.lexikon-definition.de /Mathilde-%28Asteroid%29.html (196 words)

	253 Mathilde (Site not responding. Last check: 2007-10-20)
		Mathilde is very dark fler than coal and is thought to share the composition as carbonaceous chondrite meteorites.
		The density measured by NEAR Shoemaker 300 kg/mandsup3 was less than half that a typical carbonaceous chondrite; this may indicate the asteroid is very loosely packed.
		Mathilde's orbit is eccentric taking it to the reaches of the main belt.
	www.freeglossary.com /Mathilde (456 words)

	Mathilde Flyby: Science-context (Site not responding. Last check: 2007-10-20)
		We don't know much about the Main Belt asteroid 253 Mathilde, but it has a few outstanding characteristics that bear presenting up front.
		253 Mathilde is a C-type asteroid, an asteroid with a low albedo, reflecting only 4% of the incident sunlight and a reflectance spectrum consisting of a charge-transfer absorption band in the ultraviolet only.
		Mathilde is a Main Belt Asteroid with semi-major axis = 2.46 AU.
	www.astro.umd.edu /~mcfadden/near/matcontext.html (206 words)

	No Title (Site not responding. Last check: 2007-10-20)
		The first asteroid mass determination using spacecraft tracking data will be made as a result of the NEAR spacecraft flying past asteroid 253 Mathilde on June 27, 1997.
		The NEAR spacecraft is scheduled to pass within 1200 km of Mathilde at a relative velocity of 10 km/s.
		An analysis of Mathilde's shape by the NEAR imaging team and the expected long-term radar imaging of the asteroid during the second half of 1997 by Steve Ostro and his colleagues should allow a volume (and hence a bulk density) determination to a comparable level of accuracy.
	www.lpi.usra.edu /meetings/dps97/html/H0705/H0705.html (262 words)

	List of craters on 253 Mathilde (Site not responding. Last check: 2007-10-20)
		This is a list of craters on asteroid 253 Mathilde.
		Because Mathilde is a dark, carbonaceous body, its crater s have been named after famous coalfield s from across the world.
		Mathilde Seigner Posters List, Herbert Posters Schindler's List Posters
	www.serebella.com /encyclopedia/article-List_of_craters_on_253_Mathilde.html (371 words)

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