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Topic: 8405 Asbolus

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	8405 Asbolus - Wikipedia, the free encyclopedia
		8405 Asbolus is a Centaur, that is, an icy asteroid that orbits between Jupiter and Neptune.
		Asbolus is believed to be 66±4 km in diameter.
		Centaurs are dark in colour, because their icy surfaces have darkened after long exposure to solar radiation and the solar wind.
	en.wikipedia.org /wiki/8405_Asbolus (214 words)

	Asbolus - Wikipedia, the free encyclopedia
		In Greek mythology, Asbolus (Greek for sooty) was a centaur.
		When Heracles came to visit the centaur Pholus, Pholus opened a jug of wine for him which belonged to all the Centaurs; Asbolus saw Pholus do this and brought the other Centaurs running.
		The party got rowdy and a battle ensued in which Pholus and Chiron, as well as Asbolus, met their deaths at Heracles' hands.
	en.wikipedia.org /wiki/Asbolus (119 words)

	Astron. Astrophys. 357, L53-L56 (2000)
		8405 Asbolus had already been observed in August 1998 by Brown (2000) who obtained at the Keck I telescope a flat spectrum between 1.5 and 2.4 microns at a resolution of about 100.
		However, our observations of 8405 Asbolus do not support this, as the absence of detectable water ice on this body would imply that it is currently active, which has not been demonstrated so far.
		8405 Asbolus will pass through perihelion in 2002, and we are planning to observe it intensively with different techniques to detect any possible activity from that time on.
	aa.springer.de /papers/0357003/2300l53/sc3.htm (1197 words)

	Orbit of Asbolus
		The following are plots of the osculating elements of the orbit of 8405 Asbolus during the period 1600-2020, covering a total of 384 consecutive dates separated by 400 days each.
		The minimum distance between Saturn and Asbolus was 0.466 AU on May 12, 1702.
		As can be seen from the plot of the semi-major axis, the encounter "shrinked" the orbit of Asbolus, reducing its period of revolution from nearly 81 years to 75-76 years, which is its value at present.
	www.expreso.co.cr /centaurs/astronom/8405orbit.html (237 words)

	Asbolus Home Page
		Asbolus is a Centaur, an icy asteroid that orbits between Jupiter and Neptune.
		In mythology, Asbolus was a seer, or augur, with a reputation for accurately predicting the future.
		And for this, Heracles is said to have crucified Asbolus with his arrows.
	www.asbolus.com (565 words)

	Encyclopedia :: encyclopedia : Centaur (planetoid) (Site not responding. Last check: 2007-11-01)
		No centaur has yet been photographed up close by a spacecraft, although there is evidence that Saturn's moon Phoebe, imaged by the Cassini probe in 2004, may be a captured centaur.
		In addition, the Hubble Space Telescope has gleaned some information about the surface features of 8405 Asbolus.
		In 2010, the New Horizons spacecraft is expected to perform a distant flyby of a centaur, (83982) 2002 GO Well-known centaurs include:
	www.hallencyclopedia.com /Centaur_(planetoid) (369 words)

	Science/AAAS \| Editors' Choice : 20 October 2000; 290 (5491)
		They conclude that Asbolus is a spherical object that rotates with a period of about 4 hours (instead of the previously estimated 9 hours) and that has an impact crater on one side.
		Asbolus may have been ejected from the Kuiper Belt by a collision that produced the observed crater, and this collision may have increased its rotation rate.
		The chemical and structural heterogeneity of Asbolus may help explain discrepant observations of other centaurs, some of which were thought to be homogeneous objects.
	www.sciencemag.org /content/vol290/issue5491/twil.dtl?ck=nck (1382 words)

	Chiron and Friends - Asbolus (Site not responding. Last check: 2007-11-01)
		His name comes from a Greek word meaning "soot" or "carbon dust", and probably derived from early Greece where charcoal burners were known for their fl skin & face.
		Asbolus was last conjunct its own North Node March 3-5, 1929.
		Asbolus, to find out how to discover where your Asbolus is.
	www.zanestein.com /asbolus.htm (376 words)

	Alpha Centauri's Universe Monthly Publication: 8405 Asbolus
		"Perhaps the event that caused the impact crater on 8405 Asbolus also knocked it out of the Kuiper belt," McCarthy speculates.
		As part of a survey of 10 Centaur objects, the Arizona team measured the surface composition of 8405 Asbolus on June 11, 1998.
		This was done by taking near-infrared spectra that measure the colors of sunlight reflected off the surface.
	www.earthandspace.info /contents/december2000_4.htm (117 words)

	[19.03] The Inhomogeneous Surface of Centaur 8405 Asbolus (Site not responding. Last check: 2007-11-01)
		Strong and variable absorption features on the surface of the Centaur 8405 Asbolus (1995 GO) indicate a significantly inhomogeneous surface.
		This suggests that Asbolus may be rotating faster (4.47 hours) than previously suspected.
		Asbolus is one of twelve Centaurs and Kuiper Belt objects which we have observed with HST/NICMOS to establish a uniform spectral library for understanding and classifying such objects.
	www.aas.org /publications/baas/v32n3/dps2000/423.htm (265 words)

	Edgeworth-Kuiper Belt and Dust Disk
		8405 Asbolus is a chunk of ice and debris called a Centaur object which orbits the sun between Saturn and Uranus.
		Centaurs, which orbit the Sun between Jupiter and Neptune, are thought to be icy bodies that were perturbed from their original orbits in the Edgeworth-Kuiper Belt, which extends to at least 10 times the distance of Pluto from the Sun.
		McCarthy, an University of Arizona researcher, speculates that the collision creating the impact crater dislodged Asbolus and sent it on its way to its closer orbit around the Sun.
	www.solstation.com /stars/kuiper.htm (2540 words)

	90377 Sedna - Wikipedia, the free encyclopedia
		Unlike Pluto and Charon, Sedna appears to have very little methane ice or water ice on its surface; Chad Trujillo and his colleagues at the Gemini Observatory in Hawaii suggest that Sedna's dark red color is caused by a hydrocarbon sludge, or tholin, like that found on 5145 Pholus.
		Its surface is homogeneous in colour and spectrum; this is probably because Sedna, unlike objects nearer the sun, is rarely impacted by other bodies, which would expose bright patches like that on 8405 Asbolus.
		Sedna's and Triton's spectra have been recently compared suggesting the following common model of the surface: 24% Triton tholin, 7% amorphous carbon, 26% methanol ice with 33% methane.
	en.wikipedia.org /wiki/90377_Sedna (1385 words)

	1 Introduction
		The color diversity has been interpreted as due to diverse degrees of impact rejuvenation of the surface altered by cosmic rays (Luu and Jewitt 1996).
		Near-infrared spectroscopy revealed water ice at the surface of the Centaurs 10199 Chariklo, 5145 Pholus, 2060 Chiron, and possibly 8405 Asbolus (Brown and Koresko 1998; McBride et al.
		In addition, Chiron presents cometary-like activity, while 8405 Asbolus, which has similar color and orbital characteristics, does not.
	aanda.u-strasbg.fr:2002 /papers/aa/full/2001/37/aa1578/node1.html (874 words)

	Associazione Lunar Explorer Italia - Fotografie ed Immagini della Luna, Marte, Il Sistema Solare e l'Universo - ...
		8405 Asbolus-85 visteThis is an artist's impression of object called 8405 Asbolus, a 48-mile-wide (about 80 Km) chunk of ice and dust that lies between Saturn and Uranus.
		The event that caused the impact crater on 8405 Asbolus may also have knocked it out of the Kuiper belt, a ring of comet nuclei just beyond Pluto's orbit.
		My "Day", your "Night"-65 visteThough Earthlings will be able to get a good look at Mars during close approach, NASA's 2 Rovers on Mars will not be able to see Earth.
	www.lunexit.it /gallery/thumbnails.php?album=57&page=1 (691 words)

	STScI- PR00-31: Centaur's Bright Surface Spot Could be Crater of Fresh Ice
		The unexpectedly varied surface of a wayward piece of space debris has given astronomers using NASA's Hubble Space Telescope new insights into the characteristics of a ghostly population of asteroid-sized bodies, called Centaur objects, which orbit the Sun and dwell in the realm of the giant planets.
		While observing a 48-mile-wide (80-kilometer-wide) object called 8405 Asbolus, astronomers were surprised to find that one side of the object looks like it has a fresh crater estimated to be less than 10 million years old.
		The Centaurs' orbits were perturbed into paths that carry them into the realm of the outer planets.
	www.isset.org /hubble2000/PR/2000/31/pr.html (679 words)

	Centaur (planetoid) - WikiGadugi (Site not responding. Last check: 2007-11-01)
		ᎭᏫᎾᏗᏢ ᎦᏟᏐᏗᎩ, ᎯᎠ ᏂᎯ ᎤᏜᏅᏛ ᎠᎧᏔᏘ ᎤᎭ gleaned ᎢᎦᏛ ᎠᏓᏃᎯᏎᏗ ᎬᏩᏚᏫᏛ ᎯᎠ ᎦᏚᎢ ᏄᏍᏛ ᏗᎨᎦᏃᏗ 8405 Asbolus.
		ᏓᎦᏘᎴᎬ' ᎦᏐᏆᎸ ᎠᎴ characterised ᎾᎥᎢ ᎠᏯᏖᎾ ᎠᏍᏓᏅᏅ ᏓᎦᏘᎴᎬ, ᏂᏛᎴᏅᏓ ᎦᎸᎳᏗᎨᏍᏗ ᏓᎦᏘᎴᎬ (Pholus, Asbolus, ᎤᎾᎵᎢ, Nessus) ᎤᏟ ᎢᎦᎢ gvwatuwidv (Chariklo ᎠᎴ ᎯᎠ Saturn-crossers: Thereus, Okyrhoe).
		8405 Asbolus ᎨᏒᎢ ᏭᏪᏙᎢ ᎧᏁᎢᏍᏔᏅ ᎾᏍᏋ ᏧᏠᎯᏍᏗ 15% ᎠᎺᏉᎯ-ᎾᏍᎩᏯᎢ tholin, 8% ᎤᏁᎫᏥᏛ-ᎾᏍᎩᏯᎢ tholin, 37% ᏓᎦᏘᎴᎬ ᎤᎦᏔ ᏅᏓᏳᏓᎴᏅ ᏬᏗᎨ ᎠᎴ 40% ᎤᏁᏍᏓᎳ tholin.
	www.wikigadugi.org /wiki/Centaur_(planetoid) (1422 words)

	Distant EKOs #27
		We present the velocity field of KB dust throughout the Solar System; this, together with the number density radial profile, is potentially useful for planning spacecraft missions to the outer Solar System.
		Near-infrared spectra of Centaur 8405 Asbolus have been obtained, covering the whole rotational period.
		The aim of this project was to confirm or refute the water ice detection on one side of Asbolus reported by Kern et al.
	www.boulder.swri.edu /ekonews/issues/past/n027/html (1797 words)

	Earth Change News on Earth Changes TV on the Web
		The unexpectedly varied surface of a wayward piece of space debris has given astronomers new insights into the characteristics and behavior of centaurs, ghostly comet-like bodies that lie just beyond Pluto's orbit.
		While using NASA's Hubble Space Telescope to observe Centaur 8405 Asbolus, a 48-mile-wide chunk of ice and dust that lies between Saturn and Uranus, astronomers were surprised to find that one side of the object looks like it has a fresh crater, less than 10 million years old.
		The finding poses a mystery because the underlying ice exposed by the crater is unlike any yet seen, say researchers.
	www.earthchangestv.com /breaking/September2000/0925ice.htm (199 words)

	Barucci et al., 2000. (Site not responding. Last check: 2007-11-01)
		They are located on unstable orbits with short lifetimes, and are probably transition objects between Trans-Neptunians and short-period comets.
		We present near-infrared spectroscopic observations of one of the Centaurs, 1995 GO, now named 8405 Asbolus, carried out at the ESO-Very Large Telescope (Mount Paranal, Chile) in May 1999.
		Spectra obtained in the J, H, and K bands show a rather featureless behavior with, in particular, no detection of H
	www.lesia.obspm.fr /~pcorps/TNO/aa00_0.htm (113 words)

	IngentaConnect Comparison between the Shkuratov and Hapke Scattering Theories fo... (Site not responding. Last check: 2007-11-01)
		We used two objects (the Centaurs 5145 Pholus and 8405 Asbolus) as examples.
		Previous modeling of the spectra of these two bodies with the Hapke approach gave suspect results in terms of the derived grain sizes, which were smaller than the wavelength, violating key assumptions of the model (Cruikshank et al.
		In the case of Asbolus, a tholin and amorphous carbon areal mixture can reproduce the spectrum, with water remaining at 9% or less.
	www.ingentaconnect.com /content/ap/is/2002/00000160/00000002/art06970 (524 words)

	Fernandez et al., Thermal Properties of Centaurs Asbolus and Chiron (Site not responding. Last check: 2007-11-01)
		We have measured the mid-infrared thermal continua from two Centaurs, inactive (8405) Asbolus and active 95P=(2060) Chiron, and have constrained their geometric albedos, p, and effective radii, R, with the Standard Thermal Model for slow rotators.
		This albedo is higher than all of those confidently known for active cometary nuclei.
		They show a diversity greater than that of the active comets, to which they are evolutionarily linked.
	www.ifa.hawaii.edu /publications/preprints/01preprints/Fernandez_01-27.html (201 words)

	Centaur's Bright Surface Spot Could be Crater of Fresh Ice
		Initially the observers saw a relatively bright, very complicated absorption spectrum in one hemisphere.
		The spectrum of 8405 Asbolus looked entirely different, showing a very smooth "normal" spectrum with few specific absorptions due to a complicated surface composition.
		This second spectrum matched what had been observed with the Keck Telescope three months earlier.
	www.spacedaily.com /news/asteroid-00m.html (791 words)

	Buie - pub039 (Site not responding. Last check: 2007-11-01)
		Compositional variation on the surface of Centaur 8405 Asbolus
		Near-infrared 1-2 micron spectra of the Centaur 8405 Asbolus (1995 GO) have been obtained using the Hubble Space Telescope near-infrared camera and multiobject spectrometer.
		Strong and variable absorption features indicate a significantly inhomogeneous surface characterized by water ice mixed with additional unknown constituents.
	www.lowell.edu /~buie/biblio/pub039.html (185 words)

	NewsNotes Sept. 15, 2000
		The 21 known Centaurs are thought to have been cast out of the Kuiper Belt comet reservoir beyond Pluto.
		Recently the Hubble Space Telescope studied 8405 Asbolus, a 48-mile-wide Centaur between Saturn and Uranus, with its Near Infrared Camera and Multi-Object Spectrograph.
		This may be a solar system ice that hasn't yet been seen in other objects or generated in the lab," says Donald McCarthy of the University of Arizona.
	www.pietro.org /Astro_Home/NewsNotes/NN091500.htm (1332 words)

	HubbleSOURCE: Centaur Object
		The unexpectedly varied surface of a wayward piece of space debris has given astronomers new insights into the characteristics of a ghostly population of asteroid-sized bodies, called Centaur objects, which orbit the Sun near the outer solar system.
		Hubble Space Telescope observations of a 48-mile-wide (80-kilometer-wide) object called 8405 Asbolus, show that one side of the object appears to have a fresh crater estimated to be less than 10 million years old.
		This shows that these mysterious objects do not have relatively smooth surfaces.
	hubblesource.stsci.edu /sources/video/clips/details/centaur-object.php (159 words)

	Citebase - Thermal Properties of Centaurs Asbolus and Chiron
		Citebase - Thermal Properties of Centaurs Asbolus and Chiron
		Authors: Fernandez, Y. Jewitt, D. Sheppard, S. We have measured the mid-infrared thermal continua from two Centaurs, inactive (8405) Asbolus and active 95P=(2060) Chiron, and have constrained their geometric albedos, p, and effective radii, R, with the Standard Thermal Model for slow rotators.
		These are the first such measurements of Asbolus; we find R=33 km +/- 2 km and p=0.12 +/- 0.03.
	www.citebase.org /abstract?id=oai:arXiv.org:astro-ph/0111395 (275 words)

	Preprints received by Uco Van Wijk Memorial Library
		Radio-quiet sun quasars in the direction of the northern hubble deep field Impey, Chris et al Ap.
		Compositional variation on the surface of centaur 8405 ASBOLUS Kern, S.D. et al Ap.
		WSRT and VLA observations of the 6 cm and 2 cm lines of H2 CO in the direction of W 58 C1(ON 3) and W 58 C2 Dickel, H.R. et al A. A subarcsecond binary radio source associated with the x-ray emitting YSO YLW 15 Girart, J.M. et al Ap.
	www.astro.umd.edu /library/preprints/october.html (2966 words)

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